What is the difference between machine screws and bolts?

Machine screws have a slotted head, whereas bolts have a hex head.To install a machine screw, place a flat-heat or Philips head screwdriver into the slotted head and turn it. The screw can be removed by turning the screwdriver in the opposite direction (anti-clockwise).Bolts feature a hex head instead of a slotted head. For installing a bolt, place a hex socket over the head and turn it.Machine screws are generally smaller than bolts. Machine screws are less than 1 inch long, whereas bolts come in a variety of sizes, with some of them being over 2 inches long.

What standards do these machine screws comply with?

These machine screws adhere to AN, ASME, ASTM, CSA, DIN, EHEDG, FDA, Federal Specifications, IFI, ISO, JIS, Military Specifications, MS90728-10, NAS, SAE and UL standards.

Machine Screws | Raptor Supplies United Kingdom

GRAINGER -

18-8 Stainless Steel Machine Screw, Slotted, Binding Head

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Style	Model	Length	Price (inc. VAT)
A	U51140.025.0050	1/2"	£10.89
B	U51140.025.0062	5/8"	£11.97

GRAINGER -

Steel Machine Screw, Slotted, Flat

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Style	Model	Driver Size	Head Angle	Head Dia.	Length	Tensile Strength	Thread Size	Price (inc. VAT)
A	M24540.020.0012	0.50mm	90°	3.8mm	12"	60915 psi	M2 x 0.4	£16.77
A	M24540.040.0030	1mm	90°	7.5mm	30"	60915 psi	M4 x 0.7	£11.32
B	M24540.100.0040	2.50mm	90°	18mm	40mm	60915 psi	M10 x 1.5	£18.80
C	M24540.080.0016	2mm	90°	14.5mm	16	60915	-	£11.06

APPROVED VENDOR -

Brass Machine Screw, Slotted, Pan Head

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Style	Model	Head Dia.	Head Height	Length	Thread Size	Price (inc. VAT)
A	6GY50	5.0mm	1.5mm	8"	M2.5 x 0.45	£18.05
B	6GY48	5.0mm	1.5mm	5"	M2.5 x 0.45	£21.48
C	6GY49	5.0mm	1.5mm	6"	M2.5 x 0.45	£21.19
D	6GY51	5.0mm	1.5mm	10"	M2.5 x 0.45	£17.27
E	M48040.030.0012	6.0mm	1.8mm	12"	M3 x 0.5	£11.84
F	M48040.030.0020	6.0mm	1.8mm	20ft.	M3 x 0.5	£9.59
G	M48040.030.0008	6.0mm	1.8mm	8"	M3 x 0.5	£17.48
H	M48040.030.0010	6.0mm	1.8mm	10"	M3 x 0.5	£18.16
I	M48040.030.0016	6.0mm	1.8mm	16	M3 x 0.5	£21.00
J	M48040.030.0025	6.0mm	1.8mm	25ft.	M3 x 0.5	£11.46
K	M48040.030.0005	6.0mm	1.8mm	5"	M3 x 0.5	£13.61
L	M48040.040.0012	8.0mm	2.4mm	12"	M4 x 0.7	£18.70
M	M48040.040.0020	8.0mm	2.4mm	20ft.	M4 x 0.7	£12.26
N	M48040.040.0008	8.0mm	2.4mm	8"	M4 x 0.7	£26.25
O	M48040.040.0006	8.0mm	2.4mm	6"	M4 x 0.7	£16.30
P	M48040.040.0010	8.0mm	2.4mm	10"	M4 x 0.7	£23.35
Q	M48040.060.0012	12.0mm	3.6mm	12"	M6 x 1	£26.68
R	M48040.060.0020	12.0mm	3.6mm	20ft.	M6 x 1	£13.49
S	M48040.060.0016	12.0mm	3.6mm	16	M6 x 1	£40.68
T	M48040.060.0010	12.0mm	3.6mm	10"	M6 x 1	£22.12

APPROVED VENDOR -

Property Class 4.8 Steel Machine Screw, Slotted, Flat Head

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Style	Model	Head Dia.	Head Height	Length	Thread Size	Price (inc. VAT)
A	M24540.020.0006	3.8mm	1.2mm	6"	M2 x 0.4	£10.20
B	M24540.020.0005	3.8mm	1.2mm	5"	M2 x 0.4	£13.34
C	M24540.020.0004	3.8mm	1.2mm	4"	M2 x 0.4	£15.81
D	M24540.020.0016	3.8mm	1.2mm	16	M2 x 0.4	£24.37
E	M24540.020.0010	3.8mm	1.2mm	10"	M2 x 0.4	£12.19
F	M24540.030.0005	5.6mm	1.65mm	5"	M3 x 0.5	£11.28
G	M24540.030.0008	5.6mm	1.65mm	8"	M3 x 0.5	£7.84
H	M24540.030.0010	5.6mm	1.65mm	10"	M3 x 0.5	£5.63
I	M24540.030.0016	5.6mm	1.65mm	16	M3 x 0.5	£6.03
J	M24540.030.0020	5.6mm	1.65mm	20ft.	M3 x 0.5	£8.40
K	M24540.030.0012	5.6mm	1.65mm	12"	M3 x 0.5	£5.37
L	M24540.030.0030	5.6mm	1.65mm	30"	M3 x 0.5	£6.09
M	M24540.030.0006	5.6mm	1.65mm	6"	M3 x 0.5	£7.85
N	M24540.040.0006	7.5mm	2.2mm	6"	M4 x 0.7	£3.77
O	M24540.040.0025	7.5mm	2.2mm	25ft.	M4 x 0.7	£6.39
P	M24540.040.0020	7.5mm	2.2mm	20ft.	M4 x 0.7	£18.59
Q	M24540.040.0008	7.5mm	2.2mm	8"	M4 x 0.7	£6.77
R	M24540.040.0012	7.5mm	2.2mm	12"	M4 x 0.7	£7.94
S	M24540.040.0010	7.5mm	2.2mm	10"	M4 x 0.7	£8.57
T	6HU47	7.5mm	2.2mm	5"	M4 x 0.7	£17.70
U	M24540.040.0035	7.5mm	2.2mm	35mm	M4 x 0.7	£11.32
V	M24540.040.0016	7.5mm	2.2mm	16	M4 x 0.7	£9.21
W	M24540.050.0012	9.2mm	2.5mm	12"	M5 x 0.8	£8.83
X	M24540.050.0010	9.2mm	2.5mm	10"	M5 x 0.8	£9.86
Y	M24540.050.0020	9.2mm	2.5mm	20ft.	M5 x 0.8	£12.07

APPROVED VENDOR -

A2 Stainless Steel (Comparable to 18-8 Stainless Steel) Machine Screw, Slotted, Cheese Head

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Style	Model	Head Dia.	Head Height	Length	Thread Size	Price (inc. VAT)
A	6HY50	2.0mm	0.7mm	8"	M1 x 0.25	£39.62
A	6HY47	2.0mm	0.7mm	3"	M1 x 0.25	£24.25
B	6HY46	2.0mm	0.7mm	2"	M1 x 0.25	£21.41
C	6HY48	2.0mm	0.7mm	4"	M1 x 0.25	£23.07
D	6HY51	2.0mm	0.7mm	10"	M1 x 0.25	£33.88
A	6HY49	2.0mm	0.7mm	6"	M1 x 0.25	£31.97
A	6HY52	2.3mm	0.8mm	2"	M1.2 x 0.25	£20.32
A	6HY55	2.3mm	0.8mm	5"	M1.2 x 0.25	£24.90
E	6HY56	2.3mm	0.8mm	6"	M1.2 x 0.25	£25.84
A	6HY57	2.3mm	0.8mm	8"	M1.2 x 0.25	£34.31
F	6HY58	2.3mm	0.8mm	10"	M1.2 x 0.25	£22.38
A	6HY54	2.3mm	0.8mm	4"	M1.2 x 0.25	£23.87
A	6HY53	2.3mm	0.8mm	3"	M1.2 x 0.25	£19.50
G	6HY59	2.6mm	0.9mm	3"	M1.4 x 0.3	£27.98
A	6HY61	2.6mm	0.9mm	5"	M1.4 x 0.3	£21.85
H	6HY63	2.6mm	0.9mm	8"	M1.4 x 0.3	£23.48
A	6HY62	2.6mm	0.9mm	6"	M1.4 x 0.3	£22.96
A	6HY60	2.6mm	0.9mm	4"	M1.4 x 0.3	£21.85
I	6HY64	2.6mm	0.9mm	10"	M1.4 x 0.3	£18.90
J	M51120.016.0006	3.0mm	1mm	6"	M1.6 x 0.35	£6.44
K	M51120.016.0005	3.0mm	1mm	5"	M1.6 x 0.35	£5.67
L	M51120.016.0012	3.0mm	1mm	12"	M1.6 x 0.35	£7.23
M	6HY72	3.0mm	1mm	16	M1.6 x 0.35	£12.05
N	M51120.020.0025	3.8mm	1.3mm	25ft.	M2 x 0.4	£17.51
O	M51120.020.0004	3.8mm	1.3mm	4"	M2 x 0.4	£7.22

APPROVED VENDOR -

18-8 Stainless Steel Machine Screw, Slotted, Round Head

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Style	Model	Head Dia.	Head Height	Length	Thread Size	Price (inc. VAT)
A	U51213.008.0018	0.162"	0.069"	3/16"	2-56	£3.28
B	U51213.008.0037	0.162"	0.069"	3/8"	2-56	£4.25
C	U51213.008.0050	0.162"	0.069"	1/2"	2-56	£2.90
D	U51213.008.0062	0.162"	0.069"	5/8"	2-56	£4.99
E	U51213.008.0075	0.162"	0.069"	3/4"	2-56	£5.24
F	U51213.008.0100	0.162"	0.069"	1"	2-56	£7.54
G	U51213.008.0025	0.162"	0.069"	1/4"	2-56	£6.95
H	U51213.011.0125	0.211"	0.086"	1.25"	4-40	£8.40
D	U51213.011.0012	0.211"	0.086"	1/8"	4-40	£4.58
I	U51213.011.0018	0.211"	0.086"	3/16"	4-40	£3.63
J	U51213.011.0031	0.211"	0.086"	5/16"	4-40	£4.30
K	U51213.011.0200	0.211"	0.086"	2"	4-40	£6.11
L	U51213.011.0150	0.211"	0.086"	1.5"	4-40	£9.02
M	U51213.011.0062	0.211"	0.086"	5/8"	4-40	£4.67
N	U51213.011.0075	0.211"	0.086"	3/4"	4-40	£5.85
O	U51213.011.0100	0.211"	0.086"	1"	4-40	£7.58
P	U51213.011.0050	0.211-0.193"	0.086 to 0.075"	1/2"	4-40	£6.00
Q	U51213.011.0037	0.211-0.193"	0.086 to 0.075"	3/8"	4-40	£3.35
R	U51213.011.0025	0.211-0.193"	0.086 to 0.075"	1/4"	4-40	£3.26
S	U51213.013.0087	0.260"	0.103"	7/8"	6-32	£8.16
T	U51213.013.0250	0.260"	0.103"	2.5"	6-32	£12.00
U	U51213.013.0175	0.260"	0.103"	1.75"	6-32	£11.54
V	U51213.013.0150	0.260"	0.103"	1.5"	6-32	£9.13
W	U51213.013.0125	0.260"	0.103"	1.25"	6-32	£6.00
X	U51213.013.0112	0.260"	0.103"	1.125"	6-32	£27.60

APPROVED VENDOR -

Carbon Steel Machine Screw, Phillips, Flat Head

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Style	Model	Driver Size	Head Angle	Head Dia.	Head Height	Length	Thread Size	Price (inc. VAT)
A	U24670.011.0075	#1	82°	0.191"	0.055"	3/4"	4-40	£2.22
B	U24670.011.0150	#1	82°	0.191"	0.055"	1.5"	4-40	£7.02
C	U24670.011.0037	#1	82-80°	0.212-0.191"	0.067" (Ref)	3/8"	4-40	£4.92
D	U24670.011.0025	#1	82-80°	0.212-0.191"	0.067" (Ref)	1/4"	4-40	£1.93
E	U24670.011.0050	#1	82-80°	0.212-0.191"	0.067" (Ref)	1/2"	4-40	£5.55
F	U24670.011.0100	#1	82°	0.191"	0.055"	1"	4-40	£2.96
G	U24670.019.0075	#2	82-80°	0.362-0.333"	0.116" (Ref)	3/4"	10-24	£5.55
H	U24670.019.0062	#2	82°	0.333"	0.098"	5/8"	10-24	£4.60
I	U24670.019.0150	#2	82-80°	0.362-0.333"	0.116" (Ref)	1.5"	10-24	£8.77
J	U24670.019.0101	#2	82-80°	0.362-0.333"	0.116" (Ref)	1"	10-32	£8.11
K	U24670.019.0151	#2	82-80°	0.362-0.333"	0.116" (Ref)	1.5"	10-32	£13.70
L	U24670.019.0076	#2	82-80°	0.362-0.333"	0.116" (Ref)	3/4"	10-32	£9.52
M	MPFFI-1000370-100P	#2	82°	0.333"	0.098"	3/8"	10-32	£6.44
N	U24670.019.0300	#2	82-80°	0.362-0.333"	0.116" (Ref)	3"	10-24	£16.09
O	U24670.019.0200	#2	82-80°	0.362-0.333"	0.116" (Ref)	2"	10-24	£6.32
P	U24670.019.0125	#2	82°	0.333"	0.098"	1.25"	10-24	£7.28
Q	U24670.019.0037	#2	82°	0.333"	0.098"	3/8"	10-24	£6.37
R	U24670.013.0075	#2	82-80°	0.262-0.238"	0.083" (Ref)	3/4"	6-32	£2.21
S	U24670.013.0050	#2	82-80°	0.262-0.238"	0.083" (Ref)	1/2"	6-32	£4.82
T	U24670.013.0025	#2	82-80°	0.262-0.238"	0.083" (Ref)	1/4"	6-32	£2.58
U	U24670.013.0062	#2	82-80°	0.262-0.238"	0.083" (Ref)	5/8"	6-32	£7.59
V	U24670.019.0100	#2	82-80°	0.362-0.333"	0.116" (Ref)	1"	10-24	£6.00
W	U24670.019.0050	#2	82-80°	0.362-0.333"	0.116" (Ref)	1/2"	10-24	£4.00
X	U24670.013.0037	#2	82-80°	0.262-0.238"	0.083" (Ref)	3/8"	6-32	£1.42
Y	U24670.013.0100	#2	82-80°	0.262-0.238"	0.083" (Ref)	1"	6-32	£3.22

GRAINGER -

Brass Machine Screw, Slotted, Round Head

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Style	Model	Dia./Thread Size	Driver Size	Head Dia.	Head Height	Length	Price (inc. VAT)
A	U48210.016.0062	#8-32	0.045 to 0.054"	0.287 to 0.309"	0.107 to 0.12"	5/8"	£10.45
B	U48210.016.0250	#8-32	0.045 to 0.054"	0.287 to 0.309"	0.107 to 0.12"	2.5"	£29.74
C	U48210.016.0150	#8-32	0.045 to 0.054"	0.287 to 0.309"	0.107 to 0.12"	1.5"	£21.27
D	U48210.016.0037	#8-32	0.045 to 0.054"	0.287 to 0.309"	0.107 to 0.12"	3/8"	£8.86
E	U48210.016.0125	#8-32	0.045 to 0.054"	0.287 to 0.309"	0.107 to 0.12"	1.25"	£17.19
F	U48210.016.0200	#8-32	0.045 to 0.054"	0.287 to 0.309"	0.107 to 0.12"	2"	£30.75
G	U48210.016.0300	#8-32	0.045 to 0.054"	0.287 to 0.309"	0.107 to 0.12"	3"	£38.71
H	U48210.016.0025	#8-32	0.045 to 0.054"	0.287 to 0.309"	0.107 to 0.12"	1/4"	£6.92
I	U48210.019.0062	#10-24	0.056 to 0.067"	0.334 to 0.359"	0.123 to 0.137"	5/8"	£13.86
J	U48210.019.0250	#10-24	0.056 to 0.067"	0.334 to 0.359"	0.123 to 0.137"	2.5"	£40.55
K	U48210.019.0025	#10-24	0.056 to 0.067"	0.334 to 0.359"	0.123 to 0.137"	1/4"	£16.22
L	U48210.019.0300	#10-24	0.056 to 0.067"	0.334 to 0.359"	0.123 to 0.137"	3"	£47.23
M	U48210.019.0037	#10-24	0.056 to 0.067"	0.334 to 0.359"	0.123 to 0.137"	3/8"	£12.29
N	U48210.019.0150	#10-24	0.056 to 0.067"	0.334 to 0.359"	0.123 to 0.137"	1.5"	£32.55
O	U48210.019.0125	#10-24	0.056 to 0.067"	0.334 to 0.359"	0.123 to 0.137"	1.25"	£20.38
P	U48210.019.0200	#10-24	0.056 to 0.067"	0.334 to 0.359"	0.123 to 0.137"	2"	£37.33
Q	U48210.021.0037	#12-24	0.056 to 0.067"	0.382 to 0.408"	0.139 to 0.153"	3/8"	£28.95
R	U48210.021.0150	#12-24	0.056 to 0.067"	0.382 to 0.408"	0.139 to 0.153"	1.5"	£33.91
S	U48210.021.0200	#12-24	0.056 to 0.067"	0.382 to 0.408"	0.139 to 0.153"	2"	£46.99
T	U48210.025.0037	1/4"-20	0.064 to 0.075"	0.443 to 0.472"	0.16 to 0.175"	3/8"	£16.64
U	U48210.025.0062	1/4"-20	0.064 to 0.075"	0.443 to 0.472"	0.16 to 0.175"	5/8"	£25.78
V	U48210.025.0150	1/4"-20	0.064 to 0.075"	0.443 to 0.472"	0.16 to 0.175"	1.5"	£46.35
W	U48210.037.0200	3/8"-16	0.081 to 0.094"	0.670 to 0.708"	0.237 to 0.256"	2"	£31.36
X	U48210.037.0125	3/8"-16	0.081 to 0.094"	0.670 to 0.708"	0.237 to 0.256"	1.25"	£17.80
Y	U48210.037.0100	3/8"-16	0.081 to 0.094"	0.670 to 0.708"	0.237 to 0.256"	1"	£19.89

APPROVED VENDOR -

A2 Stainless Steel (Comparable to 18-8 Stainless Steel) Machine Screw, Phillips, Pan Head

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Style	Model	Driver Size	Head Dia.	Head Height	Length	Thread Size	Washer O.D.	Price (inc. VAT)
A	6GB34	#1	5.0mm	2.12mm	4"	M2.5 x 0.45	-	£11.46
B	6GB44	#1	6.0mm	2.52mm	4"	M3 x 0.5	-	£10.52
C	6GB25	#1	4.0mm	1.72mm	3"	M2 x 0.4	-	£9.91
D	6GU58	#2	7.0mm	2.75mm	6"	M4 x 0.7	8.50mm	£23.37
D	6GU55	#2	5.5mm	2.15mm	8"	M3 x 0.5	6.50mm	£24.98
E	6GU52	#2	7.0mm	2.75mm	10"	M4 x 0.7	8.50mm	£27.18
E	6GU50	#2	7.0mm	2.75mm	6"	M4 x 0.7	8.50mm	£24.73
E	6GU48	#2	5.5mm	2.15mm	10"	M3 x 0.5	6.50mm	£11.75
D	6GU60	#2	7.0mm	2.75mm	10"	M4 x 0.7	8.50mm	£15.75
E	6GU46	#2	5.5mm	2.15mm	6"	M3 x 0.5	6.50mm	£23.45
D	6GU54	#2	5.5mm	2.15mm	6"	M3 x 0.5	6.50mm	£23.44
E	6GU47	#2	5.5mm	2.15mm	8"	M3 x 0.5	6.50mm	£21.73
D	6GU59	#2	7.0mm	2.75mm	8"	M4 x 0.7	8.50mm	£26.28
D	6GU57	#2	5.5mm	2.15mm	12"	M3 x 0.5	6.50mm	£21.98
D	6GU56	#2	5.5mm	2.15mm	10"	M3 x 0.5	6.50mm	£10.78
E	6GU53	#2	7.0mm	2.75mm	12"	M4 x 0.7	8.50mm	£25.69
E	6GU51	#2	7.0mm	2.75mm	8"	M4 x 0.7	8.50mm	£25.26
E	6GU49	#2	5.5mm	2.15mm	12"	M3 x 0.5	6.50mm	£12.31
D	6GU61	#2	7.0mm	2.75mm	12"	M4 x 0.7	8.50mm	£16.48

MICRO PLASTICS -

Machine Screws, Nylon

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Style	Model	Head Dia.	Head Height	Head Type	Length	System of Measurement	Tensile Strength	Thread Size	Price (inc. VAT)
A	010256R018	0.146-0.162"	0.059 to 0.069"	Round	3/16"	Inch	165 psi	2-56	£5.26
B	010256R100	0.146-0.162"	0.059 to 0.069"	Round	1"	-	19 psi	2-56	£1.22
C	010440R031	0.193-0.211"	0.075 to 0.211"	Round	5/16"	-	41 psi	4-40	£4.77
D	010440R100	0.193-0.211"	0.075 to 0.211"	Round	1"	Inch	41 psi	4-40	£8.94
E	010440R025	0.193-0.211"	0.075 to 0.211"	Round	1/4"	Inch	41 psi	4-40	£7.90
F	010440R050	0.193-0.211"	0.075 to 0.211"	Round	1/2"	Inch	41 psi	4-40	£8.06
G	010440R037	0.193-0.211"	0.075 to 0.211"	Round	3/8"	Inch	41 psi	4-40	£8.98
H	010632R100	0.240-0.260"	0.091 to 0.103"	Round	1"	Inch	69 psi	6-32	£5.69
I	010632R075	0.240-0.260"	0.091 to 0.103"	Round	3/4"	Inch	69 psi	6-32	£5.17
J	010632R050	0.240-0.260"	0.091 to 0.103"	Round	1/2"	Inch	69 psi	6-32	£1.12
K	010632R025	0.240-0.260"	0.091 to 0.103"	Round	1/4"	Inch	69 psi	6-32	£8.34
L	010632R037	0.240-0.260"	0.091 to 0.103"	Round	3/8"	-	69 psi	6-32	£4.98
M	010832R037	0.287-0.309"	0.107 to 0.12"	Round	3/8"	-	108 psi	8-32	£6.47
N	010832R150	0.287-0.309"	0.107 to 0.12"	Round	1.5"	Inch	108 psi	8-32	£9.61
O	010832R075	0.287-0.309"	0.107 to 0.12"	Round	3/4"	-	108 psi	8-32	£4.58
P	010832R050	0.287-0.309"	0.107 to 0.12"	Round	1/2"	Inch	108 psi	8-32	£10.73
Q	011032R150	0.334-0.359"	0.123 to 0.137"	Round	1.5"	Inch	165 psi	10-32	£10.06
R	011032R050	0.334-0.359"	0.123 to 0.137"	Round	1/2"	Inch	165 psi	10-32	-	RFQ
S	012520R200	0.443-0.472"	0.16 to 0.175"	Round	2"	Inch	312 psi	1/4-20	-	RFQ
T	012520R050	0.443-0.472"	0.16 to 0.175"	Round	1/2"	Inch	312 psi	1/4-20	£7.29
U	012520R075	0.443-0.472"	0.16 to 0.175"	Round	3/4"	Inch	312 psi	1/4-20	£11.99
V	012520R100	0.443-0.472"	0.16 to 0.175"	Round	1"	Inch	312 psi	1/4-20	£12.31
W	50M040070D012	7mm	2.6mm	Cheese	12"	Metric	-	M4 x 0.7	£4.77
X	50M040070D025	7mm	2.6mm	Cheese	25ft.	-	-	M4 x 0.7	£3.66
Y	50M050080D020	8.5mm	3.3mm	Cheese	20ft.	-	-	M5 x 0.8	-	RFQ

MICRO PLASTICS -

Machine Screws, Flat

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Style	Model	Head Angle	Head Dia.	Head Height	Length	System of Measurement	Tensile Strength	Thread Size	Price (inc. VAT)
A	020440A025	82°	0.195-0.225"	0.067"	1/4"	Inch	41 psi	4-40	£8.06
B	50M060100H020	82°	10.9-12.6mm	3.3mm	20ft.	Metric	-	M6 x 1	£4.77
C	50M080125H020	82°	15.4-17.3mm	4.6mm	20ft.	-	-	M8 x 1.25	£5.19
D	022520A050	82°	0.452-0.507"	0.153"	1/2"	Inch	312 psi	1/4-20	£11.40
E	50M060100H012	82°	10.9-12.6mm	3.3mm	12"	Metric	-	M6 x 1	£4.02
F	50M080125H030	82°	15.4-17.3mm	4.6mm	30"	Metric	-	M8 x 1.25	£5.39
G	020632A100	82°	0.244-0.279"	0.083"	1"	Inch	69 psi	6-32	£8.82
H	020832A150	82°	0.292-0.332"	0.1"	1.5"	-	108 psi	8-32	£7.85
I	50M050080H012	82°	8.9-10.4mm	2.7mm	12"	Metric	-	M5 x 0.8	£4.24
J	022520A100	82°	0.452-0.507"	0.153"	1"	Inch	312 psi	1/4-20	£11.85
K	020440A037	82°	0.195-0.225"	0.067"	3/8"	Inch	41 psi	4-40	£8.52
L	020256A031	82°	0.147-0.172"	0.051"	5/16"	Inch	19 psi	2-56	£8.73
M	022520A075	82°	0.452-0.507"	0.153"	3/4"	Inch	312 psi	1/4-20	£10.54
N	021032A050	82°	0.340-0.385"	0.116"	1/2"	Inch	165 psi	10-32	£7.88
O	020256A050	82°	0.147-0.172"	0.051"	1/2"	Inch	19 psi	2-56	£8.06
P	020632A050	82°	0.244-0.279"	0.083"	1/2"	Inch	69 psi	6-32	£8.79
Q	020832A037	82°	0.292-0.332"	0.1"	3/8"	Inch	108 psi	8-32	£9.46
R	50M080125H025	82°	15.4-17.3mm	4.6mm	25ft.	-	-	M8 x 1.25	-	RFQ
S	50M050080H010	82°	8.9-10.4mm	2.7mm	10"	Metric	-	M5 x 0.8	£5.71
T	020832A050	82°	0.292-0.332"	0.1"	1/2"	Inch	108 psi	8-32	£9.30
U	020632A075	82°	0.244-0.279"	0.083"	3/4"	Inch	69 psi	6-32	£5.44
V	50M060100H016	82°	10.9-12.6mm	3.3mm	16	Metric	-	M6 x 1	-	RFQ
W	021024A075	82°	0.340-0.385"	0.116"	3/4"	Inch	149 psi	10-24	£6.09
X	021032A075	82°	0.340-0.385"	0.116"	3/4"	-	165 psi	10-32	£1.50
Y	020832A100	82°	0.292-0.332"	0.1"	1"	Inch	108 psi	8-32	£8.11

GRAINGER -

Steel Machine Screw, Phillips, Raised Cheese

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Style	Model	Dia./Thread Size	Driver Size	Head Dia.	Head Height	Length	Material	Tensile Strength	Thread Size	Price (inc. VAT)
A	M24660.060.0040	-	#3	12mm	4.6mm	40mm	Steel	58015 psi	M6 x 1	£13.75
B	M24660.100.0060	-	#4	20mm	7.5mm	60	Steel	58015 psi	M10 x 1.5	£20.17
C	M24660.080.0012	-	#4	16mm	6mm	12"	Steel	58015 psi	M8 x 1.25	£20.20
B	M24660.100.0050	-	#4	20mm	7.5mm	50ft.	Steel	58015 psi	M10 x 1.5	£19.66
D	M24660.080.0045	-	#4	16mm	6mm	45mm	Steel	58015 psi	M8 x 1.25	£9.26
E	M24660.050.0045	M5 x 0.8	#3	10mm	3.8mm	45mm	Property Class 4.8 Steel	58015	-	£23.88
F	M24660.050.0050	M5 x 0.8	#3	10mm	3.8mm	50ft.	Property Class 4.8 Steel	58015	-	£15.23
G	M24660.060.0045	M6 x 1	#3	12mm	4.6mm	45mm	Property Class 4.8 Steel	58015	-	£18.00
H	M24660.080.0060	M8 x 1.25	#4	16mm	6mm	60	Property Class 4.8 Steel	58015	-	£10.39
I	M24660.080.0035	M8 x 1.25	#4	16mm	6mm	35mm	Property Class 4.8 Steel	58015	-	£16.68
J	M24660.080.0050	M8 x 1.25	#4	16mm	6mm	50ft.	Property Class 4.8 Steel	58015	-	£19.64
K	M24660.100.0025	M10 x 1.5	#4	20mm	7.5mm	25ft.	Property Class 4.8 Steel	58015	-	£35.55
L	M24660.100.0030	M10 x 1.5	#4	20mm	7.5mm	30"	Property Class 4.8 Steel	58015	-	£36.67

TAMPER-PRUF SCREW -

Round Head Machine Screws

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Style	Model	Drive Type	Driver Size	Finish	Head Dia.	Head Height	Length	Material	Thread Size	Price (inc. VAT)
A	141420	One-Way	#6	Plain	0.240-0.260"	0.091 to 0.103"	3/4"	18-8 Stainless Steel	6-32	£19.60
B	141090	One-Way	#8	Zinc-Plated	0.287-0.309"	0.107 to 0.12"	1/2"	Case Hardened Steel	8-32	£13.25
C	141512	One-Way	#10	Plain	0.334-0.359"	0.123 to 0.137"	1/2"	18-8 Stainless Steel	10-32	£28.93
D	141516	One-Way	#10	Plain	0.334-0.359"	0.123 to 0.137"	1.25"	18-8 Stainless Steel	10-32	£10.86
E	141200	One-Way	#10	Zinc-Plated	0.334-0.359"	0.123 to 0.137"	3/4"	Case Hardened Steel	10-32	£15.07
F	141530	One-Way	#14	Plain	0.443-0.472"	0.16 to 0.175"	3/4"	18-8 Stainless Steel	1/4-20	£12.63
G	141430	One-Way	#6	Plain	0.240-0.260"	0.091 to 0.103"	1"	18-8 Stainless Steel	6-32	£23.78
H	141110	One-Way	#8	Zinc-Plated	0.287-0.309"	0.107 to 0.12"	1"	Case Hardened Steel	8-32	£10.45
I	141140	One-Way	#10	Zinc-Plated	0.334-0.359"	0.123 to 0.137"	1/2"	Case Hardened Steel	10-24	£15.36
J	141160	One-Way	#10	Zinc-Plated	0.334-0.359"	0.123 to 0.137"	1"	Case Hardened Steel	10-24	£16.67
K	141170	One-Way	#10	Zinc-Plated	0.334-0.359"	0.123 to 0.137"	1.5"	Case Hardened Steel	10-24	£21.50
L	141290	One-Way	#14	Zinc-Plated	0.443-0.472"	0.16 to 0.175"	3/4"	Case Hardened Steel	1/4-20	£22.95
M	141300	One-Way	#14	Zinc-Plated	0.443-0.472"	0.16 to 0.175"	1"	Case Hardened Steel	1/4-20	£26.35
N	141050	One-Way	#6	Zinc-Plated	0.240-0.260"	0.091 to 0.103"	3/4"	Case Hardened Steel	6-32	£12.17
O	141480	One-Way	#10	Plain	0.334-0.359"	0.123 to 0.137"	1/2"	18-8 Stainless Steel	10-24	£25.31
P	141404	One-Way	#4	Plain	0.193-0.211"	0.075 to 0.086"	1/2"	18-8 Stainless Steel	4-40	£17.76
Q	141408	One-Way	#6	Plain	0.240-0.260"	0.091 to 0.103"	1/4"	18-8 Stainless Steel	6-32	£18.02
R	141410	One-Way	#6	Plain	0.240-0.260"	0.091 to 0.103"	1/2"	18-8 Stainless Steel	6-32	£18.21
S	141433	One-Way	#8	Plain	0.287-0.309"	0.107 to 0.12"	1/4"	18-8 Stainless Steel	8-32	£22.20
T	141440	One-Way	#8	Plain	0.287-0.309"	0.107 to 0.12"	1/2"	18-8 Stainless Steel	8-32	£25.67
U	141470	One-Way	#10	Plain	0.287-0.309"	0.107 to 0.12"	1.5"	18-8 Stainless Steel	8-32	£35.34
V	141490	One-Way	#10	Plain	0.334-0.359"	0.123 to 0.137"	3/4"	18-8 Stainless Steel	10-24	£27.88
W	141513	One-Way	#10	Plain	0.334-0.359"	0.123 to 0.137"	5/8"	18-8 Stainless Steel	10-32	£14.29
X	141514	One-Way	#10	Plain	0.334-0.359"	0.123 to 0.137"	3/4"	18-8 Stainless Steel	10-32	£15.84
Y	141515	One-Way	#10	Plain	0.334-0.359"	0.123 to 0.137"	1"	18-8 Stainless Steel	10-32	£18.47

APPROVED VENDOR -

18-8 Stainless Steel Machine Screw, Hex Trim, Hex Head

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Style	Model	Driver Size	Head Dia.	Head Height	Length	Thread Size	Price (inc. VAT)
A	1PRW5	1/4"	0.250"	0.093"	1/2"	6-32	£22.24
B	U51016.016.0050	1/4"	0.250"	0.11"	1/2"	8-32	£18.84
C	1PRW2	1/4"	0.250"	0.093"	1/4"	6-32	£12.61
D	1PRW6	1/4"	0.250"	0.093"	5/8"	6-32	£28.64
E	1PRX2	1/4"	0.250"	0.11"	3/8"	8-32	£19.65
F	1PRX4	1/4"	0.250"	0.11"	5/8"	8-32	£25.73
G	1PRW3	1/4"	0.250"	0.093"	5/16"	6-32	£15.65
H	U51016.013.0037	1/4"	0.250"	0.093"	3/8"	6-32	£15.37
I	U51016.016.0031	1/4"	0.250"	0.11"	5/16"	8-32	£17.20
J	1PRW7	1/4"	0.250"	0.093"	3/4"	6-32	£30.79
K	1PRW8	1/4"	0.250"	0.093"	1"	6-32	£35.31
L	1PRV9	3/16"	0.188"	0.06"	1/2"	4-40	£18.68

GRAINGER -

Low Carbon Steel Machine Screw, Phillips, Truss

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Style	Model	Head Dia.	Head Height	Length	Thread Size	Price (inc. VAT)
A	U24862.013.0100	0.303 to 0.321"	0.074 to 0.086"	1"	6-32	£8.67
B	U24862.013.0037	0.303 to 0.321"	0.074 to 0.086"	3/8"	6-32	£3.88
C	U24862.013.0050	0.303 to 0.321"	0.074 to 0.086"	1/2"	6-32	£4.39
D	U24862.016.0075	0.364 to 0.3840"	0.088 to 0.102"	3/4"	8-32	£11.83
E	U24862.016.0037	0.364 to 0.3840"	0.088 to 0.102"	3/8"	8-32	£5.47
F	U24862.016.0050	0.364 to 0.3840"	0.088 to 0.102"	1/2"	8-32	£6.15
G	U24862.019.0050	0.425 to 0.448"	0.103 to 0.118"	1/2"	10-24	£5.13

GRAINGER -

18-8 (304) Stainless Steel Machine Screw, Phillips, Round Head

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Style	Model	Length	Price (inc. VAT)
A	U51211.025.0050	1/2"	£9.94
B	U51211.025.0200	2"	£25.18
C	U51211.025.0075	3/4"	£14.63
D	U51211.025.0062	5/8"	£8.56

GRAINGER -

18-8 (304) Stainless Steel Machine Screw, Phillips, Oval

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B

Style	Model	Driver Size	Head Dia.	Head Height	Length	Thread Size	Price (inc. VAT)
A	U51320.019.0200	#2	0.333 to 0.362"	0.075" to 0.102	2"	10-24	£9.80
B	U51320.031.0125	#3	0.556 to 0.597"	0.117 to 0.155"	1.25"	5/16-18	£13.99

GRAINGER -

Low Carbon Steel Machine Screw, Slotted, Flat

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Style	Model	Dia./Thread Size	Driver Size	Head Angle	Head Dia.	Length	Thread Size	Price (inc. VAT)
A	U24540.031.0600	-	0.072 to 0.084"	82°	0.556 to 0.597"	6"	5/16-18	£68.19
B	U24540.037.0600	-	0.081 to 0.094"	82°	0.670 to 0.717"	6"	3/8-16	£88.94
C	U24540.037.0450	-	0.081 to 0.094"	82°	0.670 to 0.717"	4.5"	3/8-16	£65.63
D	U24540.037.0400	-	0.081 to 0.094"	82°	0.670 to 0.717"	4"	3/8-16	£105.45
E	U24540.031.0500	-	0.072 to 0.084"	82°	0.556 to 0.597"	5"	5/16-18	£55.50
F	U24540.037.0500	3/8"-16	0.081 to 0.094"	82°	0.670 to 0.717"	5"	-	£73.73
G	U24540.031.0450	5/16"-18	0.072 to 0.084"	82°	0.556 to 0.597"	4.5"	-	£48.57
H	U24540.031.0400	5/16"-18	0.072 to 0.084"	82°	0.556 to 0.597"	4"	-	£48.91

APPROVED VENDOR -

Machine Screw Fillister

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Style	Model	Head Dia.	Head Height	Length	Thread Size	Price (inc. VAT)
A	U51341.013.0075	0.226"	0.132"	3/4"	6-32	£8.56
B	U51341.013.0125	0.226"	0.132"	1.25"	6-32	£6.64
C	U51341.013.0150	0.226"	0.132"	1.5"	6-32	£15.23
D	U51341.013.0100	0.226"	0.132"	1"	6-32	£11.05
E	U51341.013.0087	0.226"	0.132"	7/8"	6-32	£10.03
F	U51341.016.0031	0.270"	0.156"	5/16"	8-32	£8.41
G	U51341.016.0125	0.270"	0.156"	1.25"	8-32	£15.21
H	U51341.016.0150	0.270"	0.156"	1.5"	8-32	£15.66
I	U51341.016.0050	0.270"	0.156"	1/2"	8-32	£9.70
J	U51341.016.0075	0.270"	0.156"	3/4"	8-32	£10.96
K	U51341.016.0025	0.270"	0.156"	1/4"	8-32	£8.05
L	U51341.016.0100	0.270"	0.156"	1"	8-32	£12.30
M	U51341.016.0037	0.270"	0.156"	3/8"	8-32	£15.01
N	U51341.016.0062	0.270"	0.156"	5/8"	8-32	£16.69
O	U51341.016.0087	0.270"	0.156"	7/8"	8-32	£12.85

GRAINGER -

Machine Screw M5

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Style	Model	Drive Type	Driver Size	Head Dia.	Head Height	Head Type	Length	Material	Tensile Strength	Price (inc. VAT)
A	M51320.050.0040	Phillips	#2	9.20mm	1.25mm	Oval	40mm	A2 Stainless Steel	72518 psi	£27.18
B	M51110.050.0035	Slotted	1.20mm	9.2mm	-	Flat	35mm	A2 Stainless Steel	72518 psi	£58.04
B	M48170.050.0030	Slotted	1.20mm	9.2mm	-	Flat	30"	Brass	53663 psi	£29.29
C	M51120.050.0090	Slotted	1.20mm	8.50mm	3.3mm	Cheese	90mm	A2 Stainless Steel	72518 psi	£6.64
D	M51110.050.0040	Slotted	1.20mm	9.2mm	-	Flat	40mm	A2 Stainless Steel	72518 psi	£14.59
B	M51110.050.0030	Slotted	1.20mm	9.2mm	-	Flat	30"	A2 Stainless Steel	72518 psi	£23.55
B	M51110.050.0045	Slotted	1.20mm	9.2mm	-	Flat	45mm	A2 Stainless Steel	72518 psi	£18.00
B	M51110.050.0060	Slotted	1.20mm	9.2mm	-	Flat	60	A2 Stainless Steel	72518 psi	£11.64
E	M51120.050.0100	Slotted	1.20mm	8.50mm	3.3mm	Cheese	100ft.	A2 Stainless Steel	72518 psi	£7.87

FOREVERBOLT -

Machine Screws, Flat

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Style	Model	Dia./Thread Size	Driver Size	Head Dia.	Head Height	Length	Price (inc. VAT)
A	FBFHMSP632516P100	#6-32	#2	0.262 to 0.238"	0.083"	5/16"	£34.48
B	FBFHMSP83214P100	#8-32	#2	0.312 to 0.285"	0.1"	1/4"	£36.28
C	FBFHMSP83212P100	#8-32	#2	0.312 to 0.285"	0.1"	1/2"	£40.23
D	FBFHMSP83234P100	#8-32	#2	0.312 to 0.285"	0.1"	3/4"	£39.20
E	FBFHMSP83258P100	#8-32	#2	0.312 to 0.285"	0.1"	5/8"	£38.30
F	FBFHMSP102412P100	#10-24	#2	0.362 to 0.333"	0.116"	1/2"	£42.15
G	FBFHMSP102434P100	#10-24	#2	0.362 to 0.333"	0.116"	3/4"	£46.74
H	FBFTFHMSP103212P100	#10-32	#2	0.362 to 0.333"	0.116"	1/2"	£44.91
I	FBFHMSP14201P100	1/4"-20	#3	0.477"	0.153"	1"	£66.46

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Machine Screws

18-8 Stainless Steel Machine Screw, Slotted, Binding Head

Steel Machine Screw, Slotted, Flat

Brass Machine Screw, Slotted, Pan Head

Property Class 4.8 Steel Machine Screw, Slotted, Flat Head

A2 Stainless Steel (Comparable to 18-8 Stainless Steel) Machine Screw, Slotted, Cheese Head

18-8 Stainless Steel Machine Screw, Slotted, Round Head

Carbon Steel Machine Screw, Phillips, Flat Head

Brass Machine Screw, Slotted, Round Head

A2 Stainless Steel (Comparable to 18-8 Stainless Steel) Machine Screw, Phillips, Pan Head

Machine Screws, Nylon

Machine Screws, Flat

Steel Machine Screw, Phillips, Raised Cheese

Round Head Machine Screws

18-8 Stainless Steel Machine Screw, Hex Trim, Hex Head

Low Carbon Steel Machine Screw, Phillips, Truss

18-8 (304) Stainless Steel Machine Screw, Phillips, Round Head

18-8 (304) Stainless Steel Machine Screw, Phillips, Oval

Low Carbon Steel Machine Screw, Slotted, Flat

Machine Screw Fillister

Machine Screw M5

Machine Screws, Flat

Machine Screws

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Machine Screws

Machine Screws

Frequently Asked Questions

What is the difference between machine screws and bolts?

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