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1/2 inch UNC Socket Head Countersunk Screws ASME B18.3-2012 in A2 Stainless Steel

A countersunk headed screw conforming with ASME/ANSI B18.3, requiring a hex key (otherwise known as an Allen key) to fit. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank.
Image of UNC Socket Head Countersunk Screws ASME B18.3-2012 in A2 image
technical drawing of UNC Socket Head Countersunk Screws ASME B18.3-2012
Technical Summary
d nominal diameter 1/2
tpi threads per inch 13
dk head diameter 0.869
k head height 0.251
s drive size 5/16
all dimensions in inches
Datasheet
< View All Sizes
Description Sale Qtys Qty Price Breakdown Despatch Estimate
1/2 x 3/4 UNC Socket Head Countersunk Screw in A2 Stainless
WF17294 - 376 in stock		 single screw for £3.92
or box of 10 for £18.74
or bulk of 50 for £66.96		 £0.00  
1/2 x 1 UNC Socket Head Countersunk Screw in A2 Stainless
WF17295 - 62 in stock		 single screw for £3.34
or box of 10 for £13.15
or bulk of 50 for £49.84		 £0.00  
1/2 x 1-1/4 UNC Socket Head Countersunk Screw in A2 Stainless
WF17296 - 606 in stock		 single screw for £2.64
or box of 10 for £6.54
or bulk of 50 for £29.71		 £0.00  
1/2 x 1-1/2 UNC Socket Head Countersunk Screw in A2 Stainless
WF17297 - 193 in stock		 single screw for £3.64
or box of 8 for £12.82
or bulk of 40 for £48.76		 £0.00  
1/2 x 1-3/4 UNC Socket Head Countersunk Screw in A2 Stainless
WF17298 - 4 in stock		 single screw for £4.91
or box of 8 for £22.57
or bulk of 40 for £78.03		 £0.00  
1/2 x 2 UNC Socket Head Countersunk Screw in A2 Stainless
WF17299 - 291 in stock		 single screw for £5.09
or box of 6 for £17.94
or bulk of 30 for £64.25		 £0.00  
1/2 x 2-1/2 UNC Socket Head Countersunk Screw in A2 Stainless
WF17300 - 57 in stock		 single screw for £5.83
or box of 5 for £18.51
or bulk of 25 for £65.97		 £0.00  
1/2 x 3 UNC Socket Head Countersunk Screw in A2 Stainless
WF26027 - 112 in stock		 single screw for £5.26
or box of 4 for £12.57
or bulk of 20 for £48.11		 £0.00  
1/2 x 3/4 UNC Socket Head Countersunk Screw in A2 Stainless
WF17294 - 376 in stock
single screw for £3.92
or box of 10 for £18.74
or bulk of 50 for £66.96
£0.00
 
1/2 x 1 UNC Socket Head Countersunk Screw in A2 Stainless
WF17295 - 62 in stock
single screw for £3.34
or box of 10 for £13.15
or bulk of 50 for £49.84
£0.00
 
1/2 x 1-1/4 UNC Socket Head Countersunk Screw in A2 Stainless
WF17296 - 606 in stock
single screw for £2.64
or box of 10 for £6.54
or bulk of 50 for £29.71
£0.00
 
1/2 x 1-1/2 UNC Socket Head Countersunk Screw in A2 Stainless
WF17297 - 193 in stock
single screw for £3.64
or box of 8 for £12.82
or bulk of 40 for £48.76
£0.00
 
1/2 x 1-3/4 UNC Socket Head Countersunk Screw in A2 Stainless
WF17298 - 4 in stock
single screw for £4.91
or box of 8 for £22.57
or bulk of 40 for £78.03
£0.00
 
1/2 x 2 UNC Socket Head Countersunk Screw in A2 Stainless
WF17299 - 291 in stock
single screw for £5.09
or box of 6 for £17.94
or bulk of 30 for £64.25
£0.00
 
1/2 x 2-1/2 UNC Socket Head Countersunk Screw in A2 Stainless
WF17300 - 57 in stock
single screw for £5.83
or box of 5 for £18.51
or bulk of 25 for £65.97
£0.00
 
1/2 x 3 UNC Socket Head Countersunk Screw in A2 Stainless
WF26027 - 112 in stock
single screw for £5.26
or box of 4 for £12.57
or bulk of 20 for £48.11
£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 Countersunk Screws ASME B18.3-2012
Technical Summary
d nominal diameter 1/2
tpi threads per inch 13
dk head diameter 0.869
k head height 0.251
s drive size 5/16
all dimensions in inches
Datasheet
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email: enquiries@westfieldfasteners.co.uk
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