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1/2 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 1/2
tpi threads per inch 13
dk head diameter 0.750
k head height 0.500
t recess depth 0.245
s drive size 3/8
b minimum thread length 1.50-2.38
Standard ASME B18.3
all dimensions in inches
Datasheet
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Description Sale Qtys Qty Price Breakdown Despatch Estimate
1/2 x 3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33754 - 75 in stock
single screw for £5.76
or box of 20 for £56.83
or bulk of 100 for £241.83
£0.00  
1/2 x 1 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33755 - 118 in stock
single screw for £5.44
or box of 4 for £14.26
or bulk of 20 for £53.28
£0.00  
1/2 x 1-1/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33756 - 18 in stock
single screw for £4.77
or box of 4 for £11.74
or bulk of 20 for £45.78
£0.00  
1/2 x 1-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33757 - 54 in stock
single screw for £4.45
or box of 8 for £21.12
or bulk of 40 for £73.36
£0.00  
1/2 x 1-3/4 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33758 - expected in 4 to 6 days
single screw for £8.27
or box of 3 for £18.66
or bulk of 15 for £66.58
£0.00  
1/2 x 2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33759 - 12 in stock
single screw for £8.13
or box of 3 for £18.26
or bulk of 15 for £65.47
£0.00  
1/2 x 2-1/2 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33760 - 10 in stock
single screw for £10.53
or box of 3 for £24.84
or bulk of 15 for £85.91
£0.00  
1/2 x 3 UNC Socket Head Cap (Allen) Screw in A4 Stainless
WF33761 - 12 in stock
single screw for £12.03
or box of 2 for £19.54
or bulk of 10 for £69.26
£0.00  
single screw for £5.76
or box of 20 for £56.83
or bulk of 100 for £241.83
£0.00
 
single screw for £5.44
or box of 4 for £14.26
or bulk of 20 for £53.28
£0.00
 
single screw for £4.77
or box of 4 for £11.74
or bulk of 20 for £45.78
£0.00
 
single screw for £4.45
or box of 8 for £21.12
or bulk of 40 for £73.36
£0.00
 
single screw for £8.27
or box of 3 for £18.66
or bulk of 15 for £66.58
£0.00
 
single screw for £8.13
or box of 3 for £18.26
or bulk of 15 for £65.47
£0.00
 
single screw for £10.53
or box of 3 for £24.84
or bulk of 15 for £85.91
£0.00
 
single screw for £12.03
or box of 2 for £19.54
or bulk of 10 for £69.26
£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 1/2
tpi threads per inch 13
dk head diameter 0.750
k head height 0.500
t recess depth 0.245
s drive size 3/8
b minimum thread length 1.50-2.38
Standard ASME B18.3
all dimensions in inches
Datasheet
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