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5/16 inch UNC Socket Head Cap Screws ASME B18.3-2012 in A4 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.
Image of UNC Socket Head Cap Screws ASME B18.3-2012 in A4 image
technical drawing of UNC Socket Head Cap Screws ASME B18.3-2012
Technical Summary
d nominal diameter 5/16
tpi threads per inch 18
dk head diameter 0.469
k head height 0.312
t recess depth 0.151
s drive size 1/4
b minimum thread length 1.12-1.71
Standard ASME B18.3
all dimensions in inches
Datasheet
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Description Sale Qtys Qty Price Breakdown Despatch Estimate
5/16 x 1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33735 - 589 in stock
single screw for £2.68
or box of 20 for £19.26
or bulk of 100 for £68.43
£0.00  
5/16 x 5/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33736 - 144 in stock
single screw for £2.31
or box of 20 for £13.80
or bulk of 100 for £52.02
£0.00  
5/16 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33737 - expected in 3 to 5 days
single screw for £3.05
or box of 15 for £19.73
or bulk of 75 for £69.75
£0.00  
5/16 x 7/8 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33738 - 1151 in stock
single screw for £2.75
or box of 20 for £20.57
or bulk of 100 for £72.36
£0.00  
5/16 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33739 - 23 in stock
single screw for £3.30
or box of 15 for £23.13
or bulk of 75 for £80.15
£0.00  
5/16 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33740 - 4 in stock
single screw for £2.99
or box of 10 for £12.55
or bulk of 50 for £48.02
£0.00  
5/16 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33741 - 1527 in stock
single screw for £3.41
or box of 10 for £16.44
or bulk of 50 for £59.84
£0.00  
5/16 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33742 - 57 in stock
single screw for £4.18
or box of 8 for £18.99
or bulk of 40 for £67.50
£0.00  
5/16 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33743 - 34 in stock
single screw for £3.04
or box of 15 for £19.54
or bulk of 75 for £68.95
£0.00  
5/16 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33744 - 38 in stock
single screw for £2.88
or box of 15 for £17.25
or bulk of 75 for £61.77
£0.00  
single screw for £2.68
or box of 20 for £19.26
or bulk of 100 for £68.43
£0.00
 
single screw for £2.31
or box of 20 for £13.80
or bulk of 100 for £52.02
£0.00
 
single screw for £3.05
or box of 15 for £19.73
or bulk of 75 for £69.75
£0.00
 
single screw for £2.75
or box of 20 for £20.57
or bulk of 100 for £72.36
£0.00
 
single screw for £3.30
or box of 15 for £23.13
or bulk of 75 for £80.15
£0.00
 
single screw for £2.99
or box of 10 for £12.55
or bulk of 50 for £48.02
£0.00
 
single screw for £3.41
or box of 10 for £16.44
or bulk of 50 for £59.84
£0.00
 
single screw for £4.18
or box of 8 for £18.99
or bulk of 40 for £67.50
£0.00
 
single screw for £3.04
or box of 15 for £19.54
or bulk of 75 for £68.95
£0.00
 
single screw for £2.88
or box of 15 for £17.25
or bulk of 75 for £61.77
£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 UNC Socket Head Cap Screws ASME B18.3-2012
Technical Summary
d nominal diameter 5/16
tpi threads per inch 18
dk head diameter 0.469
k head height 0.312
t recess depth 0.151
s drive size 1/4
b minimum thread length 1.12-1.71
Standard ASME B18.3
all dimensions in inches
Datasheet
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