Machine Bolts

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Machine bolts are used to fasten two pieces of wood or metals in manufacturing & construction applications. Raptor Supplies offers machine bolts from brands like Proto, ...Read more

FABORY -

M24 x 3 Coarse Black Oxide Steel Square Machine Bolts

StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Proof LoadPrice (inc. VAT)Pkg. Qty.
AM01030.240.007070 mmFully ThreadedRight Hand22 mmRockwell C22116030 psi24 mm580 N/sq. mm£624.8210
AM01030.240.008080 mmFully ThreadedRight Hand22 mmRockwell C22116030 psi24 mm580 N/sq. mm£749.8110
BM01030.240.009090 mmFully ThreadedRight Hand22 mmRockwell C22116030 psi24 mm580 N/sq. mm£360.145
BM01030.240.0100100 mmFully ThreadedRight Hand22 mmRockwell C22116030 psi24 mm580 N/sq. mm£153.085
BM01030.240.0120120 mmFully ThreadedRight Hand22 mmRockwell C22116030 psi24 mm580 N/sq. mm£293.535
StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)
AZS616M6X1010 mmFully ThreadedRight Hand4 mmRockwell C2585000 psi10 mmHex Head Cap Screw£9.85
AZS616M6X1212 mmFully ThreadedRight Hand4 mmRockwell C2585000 psi10 mmHex Head Cap Screw£9.79
AZS616M6X1616 mmFully ThreadedRight Hand4 mmRockwell C2585000 psi10 mmHex Head Cap Screw£10.56
AZS616M6X2020 mmFully ThreadedRight Hand4 mmRockwell C2585000 psi10 mmHex Head Cap Screw£11.83
AZS616M6X2525 mmFully ThreadedRight Hand4 mmRockwell C2585000 psi10 mmHex Head Cap Screw£12.44
AZS616M6X3030 mmFully ThreadedRight Hand4 mmRockwell C2585000 psi10 mmHex Head Cap Screw£14.00
AZS616M6X4040 mmFully ThreadedRight Hand4 mmRockwell C2585000 psi10 mmHex Head Cap Screw£15.74
ACCURATE MANUFACTURED PRODUCTS GROUP -

M8 x 1.25 Coarse Plain Grade 316H5 Stainless Steel Hex Machine Bolts

Machine bolts are used to fasten two pieces of wood or metals in manufacturing & construction applications. They can be paired up with a threaded nut to be inserted into pre-drilled holes and provide tightening torque for joining materials together.
They have widely spaced threads to tighten easily with few turns. Deep & thick threads for decreasing stripping or jamming when nicked / dirty / rusty. These bolts are made of stainless steel for strength and plain finish to resist oxidation on exposed surfaces.

StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)
AZS616M8X1616 mmFully ThreadedRight Hand5 mmRockwell C2585000 psi13 mmHex Head Cap Screw£12.34
AZS616M8X2020 mmFully ThreadedRight Hand5 mmRockwell C2585000 psi13 mmHex Head Cap Screw£12.99
AZS616M8X2525 mmFully ThreadedRight Hand5 mmRockwell C2585000 psi13 mmHex Head Cap Screw£14.12
AZS616M8X3030 mmFully ThreadedRight Hand5 mmRockwell C2585000 psi13 mmHex Head Cap Screw£15.15
AZS616M8X3535 mmFully ThreadedRight Hand5 mmRockwell C2585000 psi13 mmHex Head Cap Screw£19.30
AZS616M8X4040 mmFully ThreadedRight Hand5 mmRockwell C2585000 psi13 mmHex Head Cap Screw£20.97
AZS616M8X5050 mmFully ThreadedRight Hand5 mmRockwell C2585000 psi13 mmHex Head Cap Screw£28.58
FABORY -

3/8"-16 Coarse Black Oxide Grade A307 Steel Machine Bolts

StyleModelThread StyleThread DirectionHead HeightHead Dia.Screw TypeNeck TypeNeck WidthNeck LengthPrice (inc. VAT)Pkg. Qty.
AU08350.037.0200Partially ThreadedRight Hand13/64"1 13/64"Step BoltSquare3/8"13/64"£97.5050
BU08350.037.0300Partially ThreadedRight Hand13/64"1 13/64"Step BoltSquare3/8"13/64"£102.0825
CU08350.037.0150Partially ThreadedRight Hand13/64"1 13/64"Step BoltSquare3/8"13/64"£115.9250
BU08350.037.0250Partially ThreadedRight Hand13/64"1 13/64"Step BoltSquare3/8"13/64"£34.3225
DU08350.037.0125Partially ThreadedRight Hand13/64"1 13/64"Step BoltSquare3/8"13/64"£95.6650
FABORY -

5/16"-18 Coarse Black Oxide Grade A307A Steel Flat Machine Bolts

StyleModelHardnessThread StyleThread DirectionHead HeightHead Dia.Screw TypeClassNeck TypePrice (inc. VAT)Pkg. Qty.
AU08360.031.0075Rockwell B69-B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltClass 2ASquare£37.9425
BU08360.031.0300Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltClass 2ASquare£53.6125
AU08360.031.0150Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltClass 2ASquare£44.7225
BU08360.031.0200Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltClass 2ASquare£38.2025
AU08360.031.0100Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltClass 2ASquare£33.5725
AU08360.031.0125Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltClass 2ASquare£42.5925
AU08360.031.0175Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltClass 2ASquare£46.7725
BU08360.031.0250Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltClass 2ASquare£53.8325
FABORY -

5/16"-18 Coarse Zinc Plated Grade A307A Steel Flat Machine Bolts

StyleModelHardnessThread StyleThread DirectionHead HeightHead Dia.Screw TypeNeck TypeNeck WidthPrice (inc. VAT)Pkg. Qty.
AB08361.031.0125-Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltSquare21/64"-625
RFQ
AU08361.031.0075Rockwell B69-B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltSquare21/64"£31.0925
AU08361.031.0150Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltSquare21/64"£40.7925
BU08361.031.0200Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltSquare21/64"£44.9025
BU08361.031.0250Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltSquare21/64"£40.3825
BU08361.031.0300Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltSquare21/64"£45.2025
AU08361.031.0100Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltSquare21/64"£38.4825
AU08361.031.0125Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltSquare21/64"£30.3625
AU08361.031.0175Rockwell B100Partially ThreadedRight Hand3/32"1 3/16"Elevator BoltSquare21/64"£33.5425
FABORY -

3/8"-16 Coarse Zinc Plated Grade A307A Steel Flat Machine Bolts

StyleModelHardnessThread StyleThread DirectionHead HeightHead Dia.Screw TypeNeck TypeNeck WidthPrice (inc. VAT)Pkg. Qty.
AU08361.037.0100Rockwell B69-B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltSquare25/64"£20.6410
AU08361.037.0125Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltSquare25/64"£26.4910
AU08361.037.0150Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltSquare25/64"£26.5210
AU08361.037.0200Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltSquare25/64"£28.9910
BU08361.037.0300Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltSquare25/64"£29.1410
AU08361.037.0175Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltSquare25/64"£28.9910
BU08361.037.0250Rockwell B100Partially ThreadedRight Hand1/8"1 5/16"Elevator BoltSquare25/64"£34.5910
FABORY -

M10 x 1.5 Coarse Black Oxide Steel Square Machine Bolts

StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Proof LoadPrice (inc. VAT)Pkg. Qty.
AM01030.100.001616 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£80.8350
AM01030.100.002020 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£90.4950
BM01030.100.002525 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£97.4350
BM01030.100.003030 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£104.8150
BM01030.100.003535 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£188.3350
BM01030.100.004040 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£153.1750
CM01030.100.005050 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£137.9950
CM01030.100.006060 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£163.8650
DM01030.100.007070 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£180.9050
DM01030.100.008080 mmFully ThreadedRight Hand10 mmRockwell C22116030 psi10 mm580 N/sq. mm£196.8950
FABORY -

M16 x 2 Coarse Black Oxide Steel Square Machine Bolts

StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Proof LoadPrice (inc. VAT)Pkg. Qty.
AM01030.160.004040 mmFully ThreadedRight Hand16 mmRockwell C22116030 psi17 mm580 N/sq. mm£175.8025
BM01030.160.005050 mmFully ThreadedRight Hand16 mmRockwell C22116030 psi17 mm580 N/sq. mm£178.3325
CM01030.160.006060 mmFully ThreadedRight Hand16 mmRockwell C22116030 psi17 mm580 N/sq. mm£216.7325
CM01030.160.007070 mmFully ThreadedRight Hand16 mmRockwell C22116030 psi17 mm580 N/sq. mm£188.8410
CM01030.160.008080 mmFully ThreadedRight Hand16 mmRockwell C22116030 psi17 mm580 N/sq. mm£117.4810
DM01030.160.009090 mmFully ThreadedRight Hand16 mmRockwell C22116030 psi17 mm580 N/sq. mm£169.1010
DM01030.160.0100100 mmFully ThreadedRight Hand16 mmRockwell C22116030 psi17 mm580 N/sq. mm£187.7410
DM01030.160.0120120 mmFully ThreadedRight Hand16 mmRockwell C22116030 psi17 mm580 N/sq. mm£164.9710
FABORY -

M20 x 2.5 Coarse Black Oxide Steel Square Machine Bolts

M20 x 2.5 coarse square head machine bolts are used in heavy machinery, construction and industrial applications for securing heavy components together, such as steel beams, machinery parts and structural elements. These bolts can withstand high loads and vibrations due to their square shape, which provides a better grip and prevents loosening over time.

StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Proof LoadPrice (inc. VAT)Pkg. Qty.
AM01030.200.005050 mmFully ThreadedRight Hand20 mmRockwell C22116030 psi22 mm580 N/sq. mm£158.5010
BM01030.200.006060 mmFully ThreadedRight Hand20 mmRockwell C22116030 psi22 mm580 N/sq. mm£170.0810
BM01030.200.007070 mmFully ThreadedRight Hand20 mmRockwell C22116030 psi22 mm580 N/sq. mm£182.2510
BM01030.200.008080 mmFully ThreadedRight Hand20 mmRockwell C22116030 psi22 mm580 N/sq. mm£179.3510
CM01030.200.009090 mmFully ThreadedRight Hand20 mmRockwell C22116030 psi22 mm580 N/sq. mm£206.9110
CM01030.200.0100100 mmFully ThreadedRight Hand20 mmRockwell C22116030 psi22 mm580 N/sq. mm£208.1610
CM01030.200.0120120 mmFully ThreadedRight Hand20 mmRockwell C22116030 psi22 mm580 N/sq. mm£236.6310
StyleModelThread LengthThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)
AZS616M12X3030 mmFully ThreadedRight Hand8 mmRockwell C2585000 psi18 mmHex Head Cap Screw£53.78
AZS616M12X3535 mmFully ThreadedRight Hand8 mmRockwell C2585000 psi18 mmHex Head Cap Screw£64.31
AZS616M12X4040 mmFully ThreadedRight Hand8 mmRockwell C2585000 psi18 mmHex Head Cap Screw£68.15
AZS616M12X5050 mmFully ThreadedRight Hand8 mmRockwell C2585000 psi18 mmHex Head Cap Screw£116.59
StyleModelGrip SizeThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04200.100.03501 1/4"Partially ThreadedRight Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£55.195
AU04200.100.04001 3/4"Partially ThreadedRight Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£60.115
AU04200.100.04502 1/4"Partially ThreadedRight Hand43/64"Rockwell B6960000 psi1 5/8"Heavy Hex Bolt£55.755
FABORY -

1/4"-20 Coarse Black Oxide Grade A307 Steel Machine Bolts

StyleModelThread StyleThread DirectionHead HeightHead Dia.Screw TypeNeck TypeNeck WidthNeck LengthPrice (inc. VAT)Pkg. Qty.
AU08350.025.0200Partially ThreadedRight Hand9/64"53/64"Step BoltSquare1/4"9/64"£53.0250
BU08350.025.0125Partially ThreadedRight Hand9/64"53/64"Step BoltSquare1/4"9/64"£42.3050
BU08350.025.0150Partially ThreadedRight Hand9/64"53/64"Step BoltSquare1/4"9/64"£44.3550
CU08350.025.0100Partially ThreadedRight Hand9/64"53/64"Step BoltSquare1/4"9/64"£39.2850
FABORY -

3/4"-10 Coarse Hot Dipped Galvanized Grade A307B Steel Hex Machine Bolts

StyleModelThread StyleGrip SizeThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04200.075.0175Fully Threaded-Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£51.2810
BU04200.075.0350Partially Threaded1 3/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£66.3910
CU04200.075.0400Partially Threaded2 1/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£63.3910
CU04200.075.0450Partially Threaded2 3/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£89.4410
BB04200.075.0350Partially Threaded1 3/4"Right Hand1/2"--1 1/4"Heavy Hex Bolt£265.6240
DU04200.075.0225Partially Threaded1/2"Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£40.4610
DU04200.075.0300Partially Threaded1 1/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£59.3810
CB04200.075.0500Partially Threaded3 1/4"Right Hand1/2"--1 1/4"Heavy Hex Bolt£152.1230
DU04200.075.0200Partially Threaded1/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£57.7110
DU04200.075.0250Partially Threaded3/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£54.8410
BU04200.075.0325Partially Threaded1 1/2"Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£44.3110
CU04200.075.0500Partially Threaded3 1/4"Right Hand1/2"Rockwell B6960000 psi1 1/4"Heavy Hex Bolt£53.7110
FABORY -

1/4"-20 Coarse Zinc Plated Grade A307A Steel Flat Machine Bolts

StyleModelHardnessThread StyleThread DirectionHead HeightHead Dia.Screw TypeNeck TypeNeck WidthPrice (inc. VAT)Pkg. Qty.
AB08361.025.0150-Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"-900
RFQ
AB08361.025.0125-Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"-1050
RFQ
AU08361.025.0100Rockwell B69-B100Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"£35.7150
AU08361.025.0075Rockwell B100Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"£32.2450
AU08361.025.0125Rockwell B100Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"£45.6350
BU08361.025.0175Rockwell B100Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"£44.8950
BU08361.025.0200Rockwell B100Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"£47.3650
BU08361.025.0300Rockwell B100Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"£78.6650
AU08361.025.0150Rockwell B100Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"£41.6850
BU08361.025.0250Rockwell B100Partially ThreadedRight Hand0.078"31/32"Elevator BoltSquare15/64"£67.4350
StyleModelThread StyleThread DirectionHead HeightHardnessHead Dia.Flange Dia.Thread SizeMaterialPrice (inc. VAT)Pkg. Qty.
ASQHDG5FTZY38161Fully ThreadedRight Hand1/4"Rockwell C259/16"3/8"3/8"-16Steel£143.6850
ASQHDG5FTZY3816112Fully ThreadedRight Hand1/4"Rockwell C259/16"3/8"3/8"-16Steel£146.4350
FABORY -

1 1/4"-7 Coarse Black Oxide Grade A307B Steel Hex Machine Bolts

StyleModelThread StyleGrip SizeThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04000.125.0600Fully Threaded-Right Hand27/32"Rockwell B6960000 psi2"Heavy Hex Bolt£120.425
BU04000.125.0500Partially Threaded2 1/4"Right Hand27/32"Rockwell B6960000 psi2"Heavy Hex Bolt£105.185
BU04000.125.0450Partially Threaded1 3/4"Right Hand27/32"Rockwell B6960000 psi2"Heavy Hex Bolt£97.085
BU04000.125.0400Partially Threaded1 1/4"Right Hand27/32"Rockwell B6960000 psi2"Heavy Hex Bolt£90.815
FABORY -

5/8"-11 Coarse Hot Dipped Galvanized Grade A307B Steel Hex Machine Bolts

StyleModelThread StyleGrip SizeThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04200.062.0150Fully Threaded-Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£20.8610
BU04200.062.0250Partially Threaded1"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£24.3610
BU04200.062.0300Partially Threaded1 1/2"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£31.7610
CU04200.062.0350Partially Threaded2"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£66.4410
BU04200.062.0175Partially Threaded1/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£22.5410
BU04200.062.0225Partially Threaded3/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£22.5410
BU04200.062.0275Partially Threaded1 1/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£70.5410
CU04200.062.0325Partially Threaded1 3/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£34.6810
CU04200.062.0375Partially Threaded2 1/4"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£56.4110
CU04200.062.0400Partially Threaded2 1/2"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£46.6410
CU04200.062.0450Partially Threaded3"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£56.8510
BB04200.062.0200Partially Threaded1/2"Right Hand27/64"--1 1/16"Heavy Hex Bolt£209.2490
BB04200.062.0300Partially Threaded1 1/2"Right Hand27/64"--1 1/16"Heavy Hex Bolt£195.9260
BU04200.062.0200Partially Threaded1/2"Right Hand27/64"Rockwell B6960000 psi1 1/16"Heavy Hex Bolt£50.9810
FABORY -

7/8"-9 Coarse Hot Dipped Galvanized Grade A307B Steel Hex Machine Bolts

StyleModelGrip SizeThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypePrice (inc. VAT)Pkg. Qty.
AU04200.087.03501 1/2"Partially ThreadedRight Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£59.395
BU04200.087.04502 1/2"Partially ThreadedRight Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£69.705
AU04200.087.04002"Partially ThreadedRight Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£51.715
BU04200.087.05003"Partially ThreadedRight Hand37/64"Rockwell B6960000 psi1 7/16"Heavy Hex Bolt£77.975
StyleModelThread StyleThread DirectionHead HeightHardnessTensile StrengthHead Dia.Screw TypeClassPrice (inc. VAT)Pkg. Qty.
AB04200.112.0500Partially ThreadedRight Hand3/4"--1 13/16"Heavy Hex BoltClass 2A£266.4215
AU04200.112.0500Partially ThreadedRight Hand3/4"Rockwell B6960000 psi1 13/16"Heavy Hex BoltClass 2A£88.795
FABORY -

5/16"-18 Coarse Black Oxide Grade A307 Steel Machine Bolts

StyleModelThread StyleThread DirectionHead HeightHead Dia.Screw TypeNeck TypeNeck WidthNeck LengthPrice (inc. VAT)Pkg. Qty.
AU08350.031.0075Fully ThreadedRight Hand11/64"1 1/64"Step BoltSquare5/16"11/64"£95.2550
BU08350.031.0200Partially ThreadedRight Hand11/64"1 1/64"Step BoltSquare5/16"11/64"£103.6250
CU08350.031.0125Partially ThreadedRight Hand11/64"1 1/64"Step BoltSquare5/16"11/64"£59.3850
DU08350.031.0150Partially ThreadedRight Hand11/64"1 1/64"Step BoltSquare5/16"11/64"£56.1550
EU08350.031.0100Partially ThreadedRight Hand11/64"1 1/64"Step BoltSquare5/16"11/64"£56.2850
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Machine Bolts

Machine bolts are used to fasten two pieces of wood or metals in manufacturing & construction applications. Raptor Supplies offers machine bolts from brands like Proto, Texas Pneumatic Tools, Thomas & Betts, Fabory, Vulcan Hart and more. They can be paired up with a threaded nut to be inserted into pre-drilled holes and provide tightening torque for joining materials together.

Frequently Asked Questions

What is the difference between machine bolts and machine screws?

Machine bolts are often confused with machine screws. Generally, machine screws are smaller in size compared to machine bolts, but are fully threaded. Machine bolts have a flat tip, not a pointed / tapered tip as seen in screws. Screws are typically used in pre-tapped holes or driven into materials for creating their own threads when tightened. In contrast, machine bolts are often paired with nuts at the end of the bolt for torquing during installation. Nuts are not generally mated with screws.

What are the thread fits or classes in these machine bolts?

Thread fit grades or classes of a fastener indicate the degree of looseness or tightness of mating threads. Generally, the higher the class number, the tighter the fit of the attached components (like nuts). Lower thread fit grades / classes are suitable for applications requiring quick assembly & disassembly. Higher thread classes are ideal for close tolerances, safety & strength.

What do the strength grades / classes mean in machine bolts?

  • The grade or class of a machine bolt denotes its strength & compatibility with the respective nut.
  • Generally, the higher the grade, the higher the strength of the fastener.
  • SAE grades are used for Imperial-sized bolts. Bolts having the same SAE strength grade as a nut should be used together.
  • ISO classes are used for Metric-sized bolts. Bolts having the same first digit as a nut are meant to be used together.
  • ASTM grades are based on factors like strength, high pressures & high temperatures.

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