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5/16 inch UNC Hex Head Bolts ASME B18.2.1 in A4 Stainless Steel

The most common type of fastener, a hex head bolt is designed to be tightened with a standard spanner or ratchet and socket. Popularly used in all assemblies, a standard hex bolt is a staple across the world. Manufactured to ASME B18.2.1, and includes an unthreaded section of the shaft. A hex drive permits a greater torque load to be applied to the joint over most other drive types.
Image of UNC Hex Head Bolts ASME B18.2.1 in A4 image
technical drawing of UNC Hex Head Bolts ASME B18.2.1
Technical Summary
d nominal diameter 5/16
tpi threads per inch 18
b nom. (inch) nominal thread length 0.875
k max. (inch) head height 0.235
s max. (inch) drive size 0.500
Standard ASME B18.2.1 / ASTM F593
all dimensions in inches
Datasheet
< View All Sizes
Description Sale Qtys Qty Price Breakdown Despatch Estimate
5/16 x 1-3/8 UNC Hex Bolt Part Thread in A4 Stainless
WF33878 - 381 in stock
single bolt for £2.96
or box of 20 for £18.95
or bulk of 100 for £67.12
£0.00  
5/16 x 1-1/2 UNC Hex Bolt Part Thread in A4 Stainless
WF33879 - 187 in stock
single bolt for £2.63
or box of 30 for £19.13
or bulk of 150 for £66.93
£0.00  
5/16 x 1-3/4 UNC Hex Bolt Part Thread in A4 Stainless
WF33880 - 43 in stock
single bolt for £2.59
or box of 15 for £9.09
or bulk of 75 for £37.46
£0.00  
5/16 x 2 UNC Hex Bolt Part Thread in A4 Stainless
WF33881 - expected in 4 to 6 days
single bolt for £3.10
or box of 15 for £16.37
or bulk of 75 for £59.30
£0.00  
5/16 x 2-1/4 UNC Hex Bolt Part Thread in A4 Stainless
WF33882 - 49 in stock
single bolt for £3.33
or box of 10 for £13.09
or bulk of 50 for £49.72
£0.00  
5/16 x 2-1/2 UNC Hex Bolt Part Thread in A4 Stainless
WF33883 - 48 in stock
single bolt for £2.77
or box of 15 for £11.68
or bulk of 75 for £44.89
£0.00  
5/16 x 2-3/4 UNC Hex Bolt Part Thread in A4 Stainless
WF33884 - 493 in stock
single bolt for £3.68
or box of 15 for £24.62
or bulk of 75 for £83.82
£0.00  
5/16 x 3 UNC Hex Bolt Part Thread in A4 Stainless
WF33885 - 11 in stock
single bolt for £3.34
or box of 8 for £10.53
or bulk of 40 for £41.96
£0.00  
5/16 x 3-1/4 UNC Hex Bolt Part Thread in A4 Stainless
WF33886 - 66 in stock
single bolt for £4.10
or box of 8 for £16.29
or bulk of 40 for £59.26
£0.00  
5/16 x 3-1/2 UNC Hex Bolt Part Thread in A4 Stainless
WF33887 - 488 in stock
single bolt for £4.48
or box of 20 for £39.23
or bulk of 100 for £153.80
£0.00  
5/16 x 3-3/4 UNC Hex Bolt Part Thread in A4 Stainless
WF33888 - 36 in stock
single bolt for £4.20
or box of 20 for £35.95
or bulk of 100 for £137.03
£0.00  
5/16 x 4 UNC Hex Bolt Part Thread in A4 Stainless
WF33889 - 14 in stock
single bolt for £4.27
or box of 15 for £30.07
or bulk of 75 for £108.87
£0.00  
5/16 x 4-1/2 UNC Hex Bolt Part Thread in A4 Stainless
WF33890 - 20 in stock
single bolt for £5.56
or box of 15 for £41.27
or bulk of 75 for £164.42
£0.00  
5/16 x 5 UNC Hex Bolt Part Thread in A4 Stainless
WF33892 - 24 in stock
single bolt for £4.88
or box of 15 for £35.43
or bulk of 75 for £134.55
£0.00  
5/16 x 5-1/2 UNC Hex Bolt Part Thread in A4 Stainless
WF33894 - 26 in stock
single bolt for £5.15
or box of 15 for £37.90
or bulk of 75 for £146.27
£0.00  
5/16 x 6 UNC Hex Bolt Part Thread in A4 Stainless
WF33896 - 33 in stock
single bolt for £5.34
or box of 4 for £12.92
or bulk of 20 for £49.21
£0.00  
single bolt for £2.96
or box of 20 for £18.95
or bulk of 100 for £67.12
£0.00
 
single bolt for £2.63
or box of 30 for £19.13
or bulk of 150 for £66.93
£0.00
 
single bolt for £2.59
or box of 15 for £9.09
or bulk of 75 for £37.46
£0.00
 
single bolt for £3.10
or box of 15 for £16.37
or bulk of 75 for £59.30
£0.00
 
single bolt for £3.33
or box of 10 for £13.09
or bulk of 50 for £49.72
£0.00
 
single bolt for £2.77
or box of 15 for £11.68
or bulk of 75 for £44.89
£0.00
 
single bolt for £3.68
or box of 15 for £24.62
or bulk of 75 for £83.82
£0.00
 
single bolt for £3.34
or box of 8 for £10.53
or bulk of 40 for £41.96
£0.00
 
single bolt for £4.10
or box of 8 for £16.29
or bulk of 40 for £59.26
£0.00
 
single bolt for £4.48
or box of 20 for £39.23
or bulk of 100 for £153.80
£0.00
 
single bolt for £4.20
or box of 20 for £35.95
or bulk of 100 for £137.03
£0.00
 
single bolt for £4.27
or box of 15 for £30.07
or bulk of 75 for £108.87
£0.00
 
single bolt for £5.56
or box of 15 for £41.27
or bulk of 75 for £164.42
£0.00
 
single bolt for £4.88
or box of 15 for £35.43
or bulk of 75 for £134.55
£0.00
 
single bolt for £5.15
or box of 15 for £37.90
or bulk of 75 for £146.27
£0.00
 
single bolt for £5.34
or box of 4 for £12.92
or bulk of 20 for £49.21
£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 Hex Head Bolts ASME B18.2.1
Technical Summary
d nominal diameter 5/16
tpi threads per inch 18
b nom. (inch) nominal thread length 0.875
k max. (inch) head height 0.235
s max. (inch) drive size 0.500
Standard ASME B18.2.1 / ASTM F593
all dimensions in inches
Datasheet
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