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5/16 inch UNF Socket Head Cap Screws ASME B18. 3-2003 in A2 Stainless Steel

Also known as an Allen screw or Allen bolt, or simply a cap screw, socket head cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to ASME/ANSI B18.3, the contact surfaces of this screw or bolt are protected from external damage. Generally manufactured with a partial thread beyond a certain length and nominal diameter combination, but occasionally some stock may include a fully threaded shank at the same combination.
Image of UNF Socket Head Cap Screws ASME B18. 3-2003 in A2 image
technical drawing of UNF Socket Head Cap Screws ASME B18. 3-2003
Technical Summary
d nominal diameter 5/16
tpi threads per inch 24
b minimum thread length 1.12
dk head diameter 0.469
k max. maximum head height 0.312
t min. minimum recess depth 0.151
s drive size 1/4
Standard ASME B18.3/ASTM F837(CW)
all dimensions in inches
Datasheet
< View All Sizes
Description Sale Qtys Qty Price Breakdown Despatch Estimate
5/16 x 1/2 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF17435 - 89 in stock
single screw for £1.82
or box of 40 for £13.39
or bulk of 200 for £50.23
£0.00  
5/16 x 5/8 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF17436 - 53 in stock
sachet of 2 for £2.42
or box of 80 for £18.41
or bulk of 400 for £63.82
£0.00  
5/16 x 3/4 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF10240 - 1152 in stock
single screw for £2.62
or box of 30 for £19.08
or bulk of 150 for £67.48
£0.00  
5/16 x 7/8 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF17437 - 710 in stock
single screw for £2.66
or box of 30 for £20.08
or bulk of 150 for £70.40
£0.00  
5/16 x 1 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF10241 - 43 in stock
single screw for £2.47
or box of 50 for £24.30
or bulk of 250 for £82.07
£0.00  
5/16 x 1-1/4 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF17438 - 569 in stock
single screw for £3.01
or box of 40 for £34.42
or bulk of 200 for £130.88
£0.00  
5/16 x 1-1/2 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF10242 - 646 in stock
single screw for £3.07
or box of 40 for £35.74
or bulk of 200 for £136.81
£0.00  
5/16 x 1-3/4 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF17439 - 320 in stock
single screw for £3.06
or box of 15 for £15.81
or bulk of 75 for £57.75
£0.00  
5/16 x 2 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF17440 - 90 in stock
single screw for £2.53
or box of 40 for £21.74
or bulk of 200 for £73.61
£0.00  
5/16 x 2-1/4 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF17441 - 14 in stock
single screw for £3.75
or box of 10 for £17.17
or bulk of 50 for £62.04
£0.00  
5/16 x 2-1/2 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF17442 - 354 in stock
single screw for £4.07
or box of 30 for £46.74
or bulk of 150 for £190.88
£0.00  
5/16 x 2-3/4 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36200 - 45 in stock
single screw for £4.42
or box of 6 for £14.13
or bulk of 30 for £52.95
£0.00  
5/16 x 3 UNF Socket Head Cap (Allen) Screw in A2 Stainless
WF36131 - 44 in stock
single screw for £4.88
or box of 8 for £22.28
or bulk of 40 for £77.47
£0.00  
single screw for £1.82
or box of 40 for £13.39
or bulk of 200 for £50.23
£0.00
 
sachet of 2 for £2.42
or box of 80 for £18.41
or bulk of 400 for £63.82
£0.00
 
single screw for £2.62
or box of 30 for £19.08
or bulk of 150 for £67.48
£0.00
 
single screw for £2.66
or box of 30 for £20.08
or bulk of 150 for £70.40
£0.00
 
single screw for £2.47
or box of 50 for £24.30
or bulk of 250 for £82.07
£0.00
 
single screw for £3.01
or box of 40 for £34.42
or bulk of 200 for £130.88
£0.00
 
single screw for £3.07
or box of 40 for £35.74
or bulk of 200 for £136.81
£0.00
 
single screw for £3.06
or box of 15 for £15.81
or bulk of 75 for £57.75
£0.00
 
single screw for £2.53
or box of 40 for £21.74
or bulk of 200 for £73.61
£0.00
 
single screw for £3.75
or box of 10 for £17.17
or bulk of 50 for £62.04
£0.00
 
single screw for £4.07
or box of 30 for £46.74
or bulk of 150 for £190.88
£0.00
 
single screw for £4.42
or box of 6 for £14.13
or bulk of 30 for £52.95
£0.00
 
single screw for £4.88
or box of 8 for £22.28
or bulk of 40 for £77.47
£0.00
 
Prices are subject to quantity discounts based on a sliding scale. Enter the desired quantity in the relevant box in the table above. This will automatically calculate a line price indicating the applicable rate for the quantities selected. All prices shown exclude VAT.
technical drawing of UNF Socket Head Cap Screws ASME B18. 3-2003
Technical Summary
d nominal diameter 5/16
tpi threads per inch 24
b minimum thread length 1.12
dk head diameter 0.469
k max. maximum head height 0.312
t min. minimum recess depth 0.151
s drive size 1/4
Standard ASME B18.3/ASTM F837(CW)
all dimensions in inches
Datasheet
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