What is the difference between carriage bolts & hex head lag screws?

Carriage bolts have a flat end, whereas hex head lag bolts feature a pointed tip. The flat end of carriage bolts can accept a washer & nut for secure installation. Lag bolts have wide threads and are screwed directly into wood, without requiring nuts to complete the assembly.

What is the difference between carriage bolts and plow bolts?

Carriage bolts are generally used in smaller equipment like snowplows attached to pick-up trucks, whereas plow bolts are used in larger plow equipment like excavators. Carriage bolts have a flat profile across the bottom of the head, while plow bolts have an angled head for fitting onto countersunk holes.

Why are carriage bolts named so?

Carriage bolts became popular when they started getting used in the manufacturing of carriages & carriage wheels. Thus, they got named 'carriage bolts'.

What does the strength grades / classes mean in carriage bolts?

The grade or class of a fastener indicates its strength & compatibility with the respective nut / threaded rod / screw / bolt / washer. Generally, the higher the grade, the higher the strength of the fastener. SAE specifies grades for Imperial-sized carriage bolts. Carriage bolts having the same SAE strength grade as a nut should be used together. ISO rates Metric-sized carriage bolts. Carriage bolts having the same first digit as a nut are meant to be used together. ASTM grades carriage bolts based on factors like strength, high-pressure & high-temperature application.

How to install a carriage bolt?

Drill a hole of the appropriate bolt size (diameter) into the surface for sliding the bolt. Place the washer & nut on the back side of the bolt (opposite side of the head). Tighten the nut to pull the bolt's square shoulder into the surface. When the underside of the bolt head rests against the surface, the carriage bolt is completely installed.

How to remove a carriage bolt?

Twist the nut loose to the end of the bolt. Do not take the nut out of the bolt as it is required to move the bolt. Hit the nut using a hammer to move the bolt's square shoulder out of the surface. After some time, the nut would get closer to the surface. Repeat the process till the nut no longer grips the bolt or when the bolt can be removed by hand. Users can pry the bolt out of the hole using the nail remover attached to a hammer, if the bolt gets stuck in the hole.

Do carriage bolts need washers?

It is highly recommended to use washers with carriage bolts. Using a washer under the screw head increases the surface area and distributes the load. This decreases damage when pulling the bolt through the material using the nut and prevents the bolt from sticking / digging into the surface.

What are some standards that carriage bolts abide by?

Carriage bolts may adhere to international standards like ASME (American Society of Mechanical Engineers), ASTM (American Society for Testing and Materials), ISO (International Organization for Standardization), SAE International (Society of Automotive Engineers) & DIN (German Institute for Standardization) for meeting performance, safety, dimensional & material requirements.

Carriage Bolts | Raptor Supplies United Kingdom

FABORY -

1/2"-13 Coarse Hot Dipped Galvanized Grade A Steel Square Neck Carriage Bolts

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B

Style	Model	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Thread Length	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	B08307.050.0200	Fully Threaded	Round Spacer	1/4"	1.094"	0.25" to 0.281"	1 1/4"	74000 psi	Right Hand	£89.14	175
B	B08307.050.0400	Fully Threaded	Round Spacer	1/4"	1.094"	0.25" to 0.281"	1 1/4"	74000 psi	Right Hand	£88.13	100

FOREVERBOLT -

1/2"-13 Coarse NL-19 Grade 18-8 Stainless Steel Square Neck Carriage Bolts

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Style	Model	Thread Style	Square Height	Head Style	Neck Width	Head Dia.	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	FBCB1215P10	Fully Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£35.21	10
A	FBCB121P10	Fully Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£35.21	10
A	FBCB1225P10	Fully Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£46.44	10
B	FBCB124P5	Fully Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£34.90	5
A	FBCB122P10	Fully Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£54.84	10
A	FBCB1235P5	Fully Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£37.05	5
A	FBCB123P5	Fully Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£32.83	5
B	FBCB1245P5	Fully Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£40.20	5
B	FBCB1255P5	Fully Threaded	17/64"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£49.58	5
B	FBCB125P5	Fully Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£38.92	5
C	FBCB126P5	Partially Threaded	0.25" to 0.281"	Round Spacer	1/2"	1 1/32"	100000 psi	Right Hand	£50.13	5

FOREVERBOLT -

3/8"-16 Coarse NL-19 Grade 18-8 Stainless Steel Square Neck Carriage Bolts
Carriage bolts are suitable for fastening wooden or metallic surfaces with each other in automotive, manufacturing, woodworking and maintenance & repair applications. They usually feature a domed head without a drive and require a nut & washer to pull them into the material.
These coarsely threaded bolts have fewer threads per inch than fine threads for quick installation and excellent resistance to stripping. They feature Grade 18-8 stainless steel construction for strength and NL-19 coating for protection against salt spray and other corrosive elements. These bolts further feature a square neck design to prevent them from rotating during installation, making it easier to tighten the nut.

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Style	Model	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	FBCB381P25	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£55.79	25
A	FBCB382P25	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£67.71	25
A	FBCB383P25	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£82.48	25
B	FBCB384P20	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£78.39	20
B	FBCB3855P10	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£57.31	10
A	FBCB3815P25	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£62.38	25
A	FBCB3825P25	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£71.99	25
A	FBCB3835P10	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£42.99	10
B	FBCB3845P10	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£45.42	10
B	FBCB385P10	Fully Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£52.07	10
B	FBCB386P10	Partially Threaded	Round Spacer	3/8"	25/32"	13/64"	100000 psi	Right Hand	£47.77	10

FABORY -

M8 x 1.25 Metric Coarse Plain Grade A2 Stainless Steel Square Neck Carriage Bolts

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D

E

Style	Model	Thread Style	Thread Length	Head Style	Neck Width	Head Dia.	Square Height	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	M51500.080.0016	Fully Threaded	16 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£25.58	50
A	M51500.080.0020	Fully Threaded	20 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£19.96	50
B	M51500.080.0040	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£35.89	50
C	M51500.080.0030	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£28.89	50
B	M51500.080.0050	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£32.57	50
C	M51500.080.0025	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£33.03	50
C	M51500.080.0035	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£29.26	50
B	M51500.080.0060	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£49.44	50
D	M51500.080.0080	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£21.94	25
D	M51500.080.0110	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£45.21	25
E	M51500.080.0070	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£16.44	25
D	M51500.080.0100	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	101500 psi	Right Hand	£19.22	25

FABORY -

M5 x 0.8 Metric Coarse Plain Grade A2 Stainless Steel Square Neck Carriage Bolts

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D

Style	Model	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Thread Length	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	M51500.050.0016	Fully Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	101500 psi	Right Hand	£20.32	100
B	M51500.050.0030	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	101500 psi	Right Hand	£28.55	100
B	M51500.050.0025	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	101500 psi	Right Hand	£19.97	100
B	M51500.050.0020	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	101500 psi	Right Hand	£20.77	100
C	M51500.050.0040	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	101500 psi	Right Hand	£33.38	100
D	M51500.050.0050	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	101500 psi	Right Hand	£46.22	100

FABORY -

M12 x 1.75 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

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C

D

E

F

Style	Model	Thread Style	Thread Length	Head Style	Neck Width	Head Dia.	Square Height	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	M08250.120.0030	Fully Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£55.10	50
B	M08250.120.0090	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£52.89	25
C	M08250.120.0050	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£65.72	50
D	M08250.120.0240	Partially Threaded	49 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£45.08	10
D	M08250.120.0180	Partially Threaded	36 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£45.05	10
B	M08250.120.0150	Partially Threaded	36 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£69.86	25
B	M08250.120.0080	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£48.28	25
C	M08250.120.0065	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£56.97	25
E	M08250.120.0400	Partially Threaded	49 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£45.12	5
C	M08250.120.0040	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£57.40	50
B	M08250.120.0100	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£59.17	25
B	M08250.120.0170	Partially Threaded	36 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£39.56	10
B	M08250.120.0110	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£70.37	25
C	M08250.120.0075	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£46.56	25
C	M08250.120.0070	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£55.34	25
F	M08250.120.0060	Partially Threaded	30 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£74.41	50
E	M08250.120.0300	Partially Threaded	49 mm	Round Spacer	12.7 mm	29.35 mm	8.75 mm	58000 psi	Right Hand	£67.57	10

FABORY -

M8 x 1.25 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

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D

E

Style	Model	Thread Style	Thread Length	Head Style	Neck Width	Head Dia.	Square Height	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	M08250.080.0016	Fully Threaded	16 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£34.85	100
B	M08250.080.0020	Fully Threaded	20 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£42.81	100
C	M08250.080.0035	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£50.83	100
D	M08250.080.0060	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£71.14	100
D	M08250.080.0070	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£48.99	100
E	M08250.080.0160	Partially Threaded	28 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£32.24	25
D	M08250.080.0100	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£45.17	50
D	M08250.080.0055	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£68.93	100
C	M08250.080.0040	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£49.38	100
E	M08250.080.0130	Partially Threaded	28 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£45.23	50
E	M08250.080.0110	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£41.51	50
E	M08250.080.0120	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£49.50	50
C	M08250.080.0025	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£38.45	100
C	M08250.080.0045	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£45.42	100
D	M08250.080.0090	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£41.91	50
D	M08250.080.0075	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£82.77	100
D	M08250.080.0065	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£71.60	100
C	M08250.080.0030	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£43.42	100
E	M08250.080.0150	Partially Threaded	28 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£33.05	25
C	M08250.080.0050	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£50.30	100
D	M08250.080.0080	Partially Threaded	22 mm	Round Spacer	8.58 mm	19.35 mm	5.6 mm	58000 psi	Right Hand	£57.66	100

FABORY -

M5 x 0.8 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

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C

Style	Model	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Thread Length	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	M08250.050.0016	Fully Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	58000 psi	Right Hand	£16.43	100
B	M08250.050.0025	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	58000 psi	Right Hand	£14.46	100
B	M08250.050.0035	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	58000 psi	Right Hand	£14.64	100
B	M08250.050.0045	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	58000 psi	Right Hand	£24.09	100
C	M08250.050.0080	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	58000 psi	Right Hand	£54.98	100
B	M08250.050.0020	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	58000 psi	Right Hand	£17.77	100
B	M08250.050.0030	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	58000 psi	Right Hand	£18.47	100
B	M08250.050.0040	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	58000 psi	Right Hand	£24.49	100
B	M08250.050.0050	Partially Threaded	Round Spacer	5.48 mm	12.45 mm	4.1 mm	16 mm	58000 psi	Right Hand	£22.84	100

FABORY -

1/2"-13 Coarse Zinc Plated Grade A Steel Square Neck Carriage Bolts

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B

Style	Model	Thread Style	Neck Width	Thread Length	Head Style	Head Dia.	Square Height	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	B08305.050.0100	Fully Threaded	1/4"	1"	Round Spacer	1.094"	0.25" to 0.281"	74000 psi	Right Hand	-	250	RFQ
B	B08305.050.0175	Partially Threaded	1/2"	1 1/4"	Round Spacer	1.094"	0.25" to 0.281"	74000 psi	Right Hand	£170.95	200

GRAINGER -

3/4"-10 Coarse Zinc Plated Grade 5 Steel Square Neck Carriage Bolts

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C

Style	Model	Head Dia.	Square Height	Thread Style	Head Style	Neck Width	Thread Length	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	U08320.075.0300	1 15/32"	25/64"	Partially Threaded	Round Spacer	3/4"	1 3/4"	-	£25.35	10
B	U08320.075.0500	1 15/32"	25/64"	Partially Threaded	Round Spacer	3/4"	1 3/4"	-	£172.99	10
C	U08320.075.0200	1 15/32"	25/64"	Partially Threaded	Round Spacer	3/4"	1 3/4"	-	£44.99	10
A	U08320.075.0400	1 15/32"	25/64"	Partially Threaded	Round Spacer	3/4"	1 3/4"	-	£50.81	10
A	B08320.075.0400	1.594"	0.375" to 0.406"	Partially Threaded	Round Spacer	3/4"	1 3/4"	Right Hand	£132.71	40

FABORY -

M16 x 2 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

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B

Style	Model	Thread Length	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	M08250.160.0060	38 mm	Partially Threaded	Round Spacer	16.7 mm	37.2 mm	12.9 mm	58000 psi	Right Hand	£56.10	25
B	M08250.160.0100	38 mm	Partially Threaded	Round Spacer	16.7 mm	37.2 mm	12.9 mm	58000 psi	Right Hand	£38.37	10
A	M08250.160.0070	38 mm	Partially Threaded	Round Spacer	16.7 mm	37.2 mm	12.9 mm	58000 psi	Right Hand	£22.30	10
B	M08250.160.0080	38 mm	Partially Threaded	Round Spacer	16.7 mm	37.2 mm	12.9 mm	58000 psi	Right Hand	£25.00	10
B	M08250.160.0140	44 mm	Partially Threaded	Round Spacer	16.7 mm	37.2 mm	12.9 mm	58000 psi	Right Hand	£64.62	10

GRAINGER -

5/8"-11 Coarse Zinc Plated Grade 5 Steel Square Neck Carriage Bolts

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E

Style	Model	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Thread Length	Thread Size	Material	Price (inc. VAT)	Pkg. Qty.
A	U08320.062.0200	Fully Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	5/8"-11	Steel	£8.76	10
B	U08320.062.0250	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	5/8"-11	Steel	£24.68	10
C	U08320.062.0350	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	5/8"-11	Steel	£30.51	10
D	U08320.062.0500	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	5/8"-11	Steel	£22.94	10
D	U08320.062.0400	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	5/8"-11	Steel	£35.96	10
E	U08320.062.0600	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	5/8"-11	Steel	£29.90	10
C	U08320.062.0300	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	5/8"-11	Steel	£27.88	10

GRAINGER -

5/8"-11 Coarse Hot Dipped Galvanized Grade 2 Steel Square Neck Carriage Bolts

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C

Style	Model	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Thread Length	Tensile Strength	Price (inc. VAT)	Pkg. Qty.
A	U08307.062.0200	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£20.08	10
B	U08307.062.0400	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£32.16	10
C	U08307.062.0300	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£33.17	10
C	U08307.062.0250	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£32.23	10
B	U08307.062.0500	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£18.86	10

APPROVED VENDOR -

7/16"-14 Coarse Chrome Plated Grade 5 Steel Square Neck Carriage Bolts

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B

Style	Model	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Thread Length	Tensile Strength	Price (inc. VAT)	Pkg. Qty.
A	MPB664	Fully Threaded	Round Spacer	7/16"	15/16"	15/64"	1 1/8"	120000 psi	£27.20	5
B	MPB763	Fully Threaded	Round Spacer	7/16"	15/16"	15/64"	1 1/8"	120000 psi	£32.82	5
A	MPB759	Fully Threaded	Round Spacer	7/16"	15/16"	15/64"	-	120000 psi	£18.20	5
A	MPB760	Fully Threaded	Round Spacer	7/16"	15/16"	15/64"	1 1/8"	120000 psi	£23.43	5
B	MPB761	Fully Threaded	Round Spacer	7/16"	15/16"	15/64"	1 1/8"	120000 psi	£26.13	5
B	MPB762	Fully Threaded	Round Spacer	7/16"	15/16"	15/64"	1 1/8"	120000 psi	£27.36	5

GRAINGER -

5/8"-11 Coarse Zinc Plated Grade 2 Steel Square Neck Carriage Bolts

A

B

C

D

Style	Model	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Thread Length	Tensile Strength	Price (inc. VAT)	Pkg. Qty.
A	U08305.062.0150	Fully Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£13.71	10
A	U08305.062.0200	Fully Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£7.28	10
B	U08305.062.0350	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£26.09	10
B	U08305.062.0450	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£28.11	10
B	U08305.062.0500	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£22.55	10
C	U08305.062.0250	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£15.72	10
B	U08305.062.0400	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£23.96	10
D	U08305.062.0600	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£29.57	10
B	U08305.062.0300	Partially Threaded	Round Spacer	5/8"	1 7/32"	21/64"	1 1/2"	74000 psi	£17.31	10

APPROVED VENDOR -

5/16"-18 Coarse Chrome Plated Grade 5 Steel Square Neck Carriage Bolts

A

B

C

Style	Model	Thread Style	Head Style	Neck Width	Head Dia.	Square Height	Thread Length	Tensile Strength	Price (inc. VAT)	Pkg. Qty.
A	MPB750	Fully Threaded	Round Spacer	5/16"	45/64"	11/64"	7/8"	120000 psi	£15.57	5
B	MPB753	Fully Threaded	Round Spacer	5/16"	45/64"	11/64"	7/8"	120000 psi	£22.59	5
A	MPB663	Fully Threaded	Round Spacer	5/16"	45/64"	11/64"	-	120000 psi	£15.55	5
C	MPB752	Fully Threaded	Round Spacer	5/16"	45/64"	11/64"	7/8"	120000 psi	£19.89	5
A	MPB751	Fully Threaded	Round Spacer	5/16"	45/64"	11/64"	7/8"	120000 psi	£15.91	5

FABORY -

M6 x 1 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

A

B

C

D

Style	Model	Thread Style	Thread Length	Head Style	Neck Width	Head Dia.	Square Height	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	M08250.060.0016	Fully Threaded	16 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£24.55	100
B	M08250.060.0030	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£26.92	100
B	M08250.060.0050	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£33.10	100
B	M08250.060.0025	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£21.34	100
C	M08250.060.0080	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£43.13	100
D	M08250.060.0110	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£55.96	100
C	M08250.060.0090	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£47.77	100
C	M08250.060.0060	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£30.29	100
B	M08250.060.0035	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£29.76	100
B	M08250.060.0040	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£30.51	100
B	M08250.060.0020	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£26.83	100
B	L08250.060.0030	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£160.09	1
C	M08250.060.0100	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£34.95	100
C	M08250.060.0075	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£34.54	100
C	M08250.060.0070	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£35.72	100
C	M08250.060.0055	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£40.20	100
B	M08250.060.0045	Partially Threaded	18 mm	Round Spacer	6.48 mm	15.45 mm	4.6 mm	58000 psi	Right Hand	£27.47	100

FABORY -

5/16"-18 Coarse Hot Dipped Galvanized Grade A Steel Square Neck Carriage Bolts

A

B

C

Style	Model	Thread Style	Head Dia.	Square Height	Head Style	Neck Width	Thread Length	Tensile Strength	Thread Direction	Price (inc. VAT)	Pkg. Qty.
A	B08307.031.0100	Fully Threaded	0.688"	5/32"	Round Spacer	5/16"	7/8"	74000 psi	Right Hand	£239.54	800
B	B08307.031.0400	Partially Threaded	0.688"	5/32"	Round Spacer	5/16"	7/8"	74000 psi	Right Hand	-	300	RFQ
C	B08307.031.0125	Partially Threaded	0.719"	0.156" to 0.187"	Round Spacer	5/16"	7/8"	74000 psi	Right Hand	£142.38	700

APPROVED VENDOR -

3/8"-16 Coarse Hot Dipped Galvanized Grade 2 Steel Square Neck Carriage Bolts

A

B

C

D

Style	Model	Thread Style	Head Dia.	Square Height	Head Style	Neck Width	Thread Length	Tensile Strength	Price (inc. VAT)	Pkg. Qty.
A	U08307.037.0500	Fully Threaded	25/32"	13/64"	Round Spacer	3/8"	1"	74000 psi	£4.44	10
B	U08307.037.0350	Fully Threaded	25/32"	13/64"	Round Spacer	3/8"	1"	74000 psi	£8.99	25
B	B08307.037.0350	Fully Threaded	25/32"	13/64"	Round Spacer	3/8"	1"	74000 psi	£102.37	225
C	U08307.037.0250	Fully Threaded	0.782"	3/16"	Round Spacer	3/8"	1"	74000 psi	£16.20	50
B	U08307.037.0400	Fully Threaded	25/32"	13/64"	Round Spacer	3/8"	1"	74000 psi	£10.54	25
A	U08307.037.0600	Fully Threaded	25/32"	13/64"	Round Spacer	3/8"	1"	74000 psi	£5.36	10
C	U08307.037.0100	Fully Threaded	0.782"	3/16"	Round Spacer	3/8"	1"	74000 psi	£43.46	100
B	U08307.037.0300	Fully Threaded	25/32"	13/64"	Round Spacer	3/8"	1"	74000 psi	£7.30	25
A	B08307.037.0600	Fully Threaded	25/32"	13/64"	Round Spacer	3/8"	1"	74000 psi	£80.65	140
D	U08307.037.0125	Partially Threaded	25/32"	13/64"	Round Spacer	3/8"	1"	74000 psi	£66.30	100
D	U08307.037.0150	Partially Threaded	0.782"	3/16"	Round Spacer	3/8"	1"	74000 psi	£45.71	100
D	U08307.037.0200	Partially Threaded	25/32"	13/64"	Round Spacer	3/8"	1"	74000 psi	£36.12	50

APPROVED VENDOR -

1/2"-13 Coarse Zinc Plated Grade 2 Steel Square Neck Carriage Bolts

A

B

C

D

E

F

G

Style	Model	Thread Style	Neck Width	Head Dia.	Square Height	Thread Length	Tensile Strength	Head Style	Price (inc. VAT)	Pkg. Qty.
A	U08305.050.0350	Fully Threaded	1/2"	1.032"	1/4"	1 1/4"	74000 psi	Round Spacer	£15.73	25
A	B08305.050.0400	Fully Threaded	1/4"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£79.28	100
B	U08305.050.0600	Fully Threaded	1/4"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£9.45	10
C	U08305.050.0100	Fully Threaded	1/4"	1 1/32"	17/64"	1"	74000 psi	Round Spacer	£16.21	50
C	U08305.050.0200	Fully Threaded	1/4"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£9.29	25
A	U08305.050.0300	Fully Threaded	1/4"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£12.46	25
C	U08305.050.0125	Fully Threaded	1/2"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£27.89	50
A	U08305.050.0400	Fully Threaded	1/4"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£7.03	10
B	B08305.050.0600	Fully Threaded	1/4"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£85.48	80
D	U08305.050.0150	Partially Threaded	1/2"	1.032"	1/4"	1 1/4"	74000 psi	Round Spacer	£18.24	50
E	U08305.050.0900	Partially Threaded	1/4"	1 1/32"	17/64"	1 1/2"	60000 psi	Round Spacer	£15.25	10
F	U08305.050.0800	Partially Threaded	1/4"	1 1/32"	17/64"	1 1/2"	60000 psi	Round Spacer	£12.43	10
G	U08305.050.0500	Partially Threaded	1/2"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£12.99	10
D	U08305.050.0275	Partially Threaded	1/2"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£39.98	25
E	B08305.050.1000	Partially Threaded	1/4"	1 1/32"	17/64"	1 1/2"	60000 psi	Round Spacer	£84.83	50
D	U08305.050.0175	Partially Threaded	1/2"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£18.05	25
D	U08305.050.0225	Partially Threaded	1/2"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£34.79	25
E	U08305.050.1000	Partially Threaded	1/4"	1 1/32"	17/64"	1 1/2"	60000 psi	Round Spacer	£13.24	10
D	U08305.050.0250	Partially Threaded	1/2"	1 1/32"	17/64"	1 1/4"	74000 psi	Round Spacer	£17.28	25
E	B08305.050.0900	Partially Threaded	1/4"	1 1/32"	17/64"	1 1/2"	60000 psi	Round Spacer	£81.79	50

APPROVED VENDOR -

3/8"-16 Coarse Zinc Plated Grade 2 Steel Square Neck Carriage Bolts

A

B

C

D

E

F

G

Style	Model	Thread Style	Head Dia.	Square Height	Thread Length	Tensile Strength	Head Style	Neck Width	Price (inc. VAT)	Pkg. Qty.
A	U08305.037.0100	Fully Threaded	0.782"	3/16"	1"	74000 psi	Round Spacer	3/8"	£15.24	100
B	U08305.037.0500	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£4.41	10
B	U08305.037.0600	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£5.03	10
A	U08305.037.0200	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£12.08	50
A	U08305.037.0175	Fully Threaded	0.782"	3/16"	1"	74000 psi	Round Spacer	3/8"	£28.38	100
A	U08305.037.0150	Fully Threaded	0.782"	3/16"	1"	74000 psi	Round Spacer	3/8"	£17.90	100
C	U08305.037.0400	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£9.35	25
A	B08305.037.0125	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£88.82	500
A	B08305.037.0100	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£93.95	500
C	U08305.037.0350	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£8.15	25
C	U08305.037.0300	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£6.53	25
A	U08305.037.0250	Fully Threaded	0.782"	3/16"	1"	74000 psi	Round Spacer	3/8"	£13.45	50
A	U08305.037.0125	Fully Threaded	0.782"	3/16"	1"	74000 psi	Round Spacer	3/8"	£15.06	100
B	B08305.037.0500	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£90.07	160
C	U08305.037.0450	Fully Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£4.24	10
D	U08305.037.0225	Partially Threaded	0.782"	3/16"	1"	74000 psi	Round Spacer	3/8"	£17.56	50
E	U08305.037.0800	Partially Threaded	25/32"	13/64"	1 1/4"	60000 psi	Round Spacer	3/8"	£6.06	10
E	B08305.037.0800	Partially Threaded	25/32"	13/64"	1 1/4"	60000 psi	Round Spacer	3/8"	£81.49	110
F	U08305.037.0550	Partially Threaded	25/32"	13/64"	1"	74000 psi	Round Spacer	3/8"	£6.91	10
G	U08305.037.0275	Partially Threaded	0.782"	3/16"	1"	74000 psi	Round Spacer	3/8"	£26.74	50
E	U08305.037.0700	Partially Threaded	25/32"	13/64"	1 1/4"	60000 psi	Round Spacer	3/8"	£7.12	10

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Carriage Bolts

1/2"-13 Coarse Hot Dipped Galvanized Grade A Steel Square Neck Carriage Bolts

1/2"-13 Coarse NL-19 Grade 18-8 Stainless Steel Square Neck Carriage Bolts

M8 x 1.25 Metric Coarse Plain Grade A2 Stainless Steel Square Neck Carriage Bolts

M5 x 0.8 Metric Coarse Plain Grade A2 Stainless Steel Square Neck Carriage Bolts

M12 x 1.75 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

M8 x 1.25 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

M5 x 0.8 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

1/2"-13 Coarse Zinc Plated Grade A Steel Square Neck Carriage Bolts

3/4"-10 Coarse Zinc Plated Grade 5 Steel Square Neck Carriage Bolts

M16 x 2 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

5/8"-11 Coarse Zinc Plated Grade 5 Steel Square Neck Carriage Bolts

5/8"-11 Coarse Hot Dipped Galvanized Grade 2 Steel Square Neck Carriage Bolts

7/16"-14 Coarse Chrome Plated Grade 5 Steel Square Neck Carriage Bolts

5/8"-11 Coarse Zinc Plated Grade 2 Steel Square Neck Carriage Bolts

5/16"-18 Coarse Chrome Plated Grade 5 Steel Square Neck Carriage Bolts

M6 x 1 Metric Coarse Zinc Plated Class 4.6 Steel Square Neck Carriage Bolts

5/16"-18 Coarse Hot Dipped Galvanized Grade A Steel Square Neck Carriage Bolts

3/8"-16 Coarse Hot Dipped Galvanized Grade 2 Steel Square Neck Carriage Bolts

1/2"-13 Coarse Zinc Plated Grade 2 Steel Square Neck Carriage Bolts

3/8"-16 Coarse Zinc Plated Grade 2 Steel Square Neck Carriage Bolts

Carriage Bolts

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Carriage Bolts

Frequently Asked Questions

What is the difference between carriage bolts & hex head lag screws?

What is the difference between carriage bolts and plow bolts?

Why are carriage bolts named so?

What does the strength grades / classes mean in carriage bolts?

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