Home / UNC Bolts, Nuts and Washers / UNC Socket Head Shoulder Screws ASME B18.3-2012 with 5/16 inch diameter shoulder in A2 Stainless Steel

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UNC Socket Head Shoulder Screws ASME B18.3-2012 with 5/16 inch diameter shoulder in A2 Stainless Steel

Socket shoulder screw with a UNC imperial coarse thread. They are also known as shoulder bolts, precision shoulder screw and in the US, stripper bolts. The main dimensions are for the diameter and total length required under the head. Shoulder screws have an undercut portion between the thread and shoulder, allowing a close fit. They are used in a wide range of punch and die operations and as shafts, pivots, guides, pins, linkages and trunion mountings. Please note that the nominal diameter here refers to the shoulder diameter, except where shown otherwise.

Image of UNC Socket Head Shoulder Screws ASME B18.3-2012 in A2 image

technical drawing of UNC Socket Head Shoulder Screws ASME B18.3-2012

Technical Summary

nominal diameter

1/4

diameter

5/16

D max.

max. diameter

0.3105

D min.

min. diameter

0.3085

dk max.

maximum head diameter

0.438

dk min.

minimum head diameter

0.419

k max.

maximum head height

0.219

k min.

minimum head height

0.209

drive size

5/32 (0.156)

d decimal

nominal diameter decimal

0.2500

tpi

threads per inch

minimum thread length

0.438

Standard

ASME B18.3

all dimensions in inches

Datasheet

< View All Sizes

Description	Sale Qtys	Price
Socket Shoulder Screw UNC 1/4 with 5/16 x 5/16 Inch Shoulder in A2 Stainless WF60607 - 11 in stock	single screw for £1.82 or box of 10 for £17.36 or bulk of 50 for £83.40	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 5/8 Inch Shoulder in A2 Stainless WF60610 - 10 in stock	single screw for £4.14 or box of 5 for £20.19 or bulk of 25 for £96.75	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 3/4 Inch Shoulder in A2 Stainless WF60611 - 45 in stock	single screw for £1.45 or box of 15 for £20.66 or bulk of 75 for £99.01	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 7/8 Inch Shoulder in A2 Stainless WF60612 - expected in 16 to 24 days	single screw for £4.52 or box of 4 for £17.65 or bulk of 20 for £84.76	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 1 Inch Shoulder in A2 Stainless WF60613 - 8 in stock	single screw for £4.25 or box of 4 for £16.61 or bulk of 20 for £79.83	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 1-1/4 Inch Shoulder in A2 Stainless WF60614 - 8 in stock	single screw for £6.29 or box of 3 for £18.58 or bulk of 15 for £89.12	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 1-1/2 Inch Shoulder in A2 Stainless WF60615 - 8 in stock	single screw for £3.36 or box of 6 for £19.52 or bulk of 30 for £93.62	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 1-3/4 Inch Shoulder in A2 Stainless WF60616 - 2 in stock	single screw for £7.12 or box of 3 for £21.08 or bulk of 15 for £100.93	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 2 Inch Shoulder in A2 Stainless WF60617 - 20 in stock	single screw for £8.11 or box of 3 for £24.09 or bulk of 15 for £115.20	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 2-1/4 Inch Shoulder in A2 Stainless WF60618 - 13 in stock	single screw for £10.51 or box of 2 for £20.88 or bulk of 10 for £100.00	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 2-1/2 Inch Shoulder in A2 Stainless WF60619 - expected in 6 to 9 days	single screw for £12.92 or box of 2 for £25.62 or bulk of 10 for £122.83	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 2-3/4 Inch Shoulder in A2 Stainless WF60679 - 23 in stock	single screw for £14.05 or box of 2 for £27.79 or bulk of 10 for £133.64	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 3 Inch Shoulder in A2 Stainless WF60620 - 23 in stock	single screw for £15.52 or box of 2 for £30.56 or bulk of 10 for £147.49	£0.00
Socket Shoulder Screw UNC 1/4 with 5/16 x 3-1/2 Inch Shoulder in A2 Stainless WF60680 - expected in 6 to 9 days	single screw for £16.22 or box of 2 for £31.89 or bulk of 10 for £154.16	£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 5/16 Inch Shoulder in A2 Stainless
WF60607 - 11 in stock

single screw for £1.82
or box of 10 for £17.36
or bulk of 50 for £83.40

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 5/8 Inch Shoulder in A2 Stainless
WF60610 - 10 in stock

single screw for £4.14
or box of 5 for £20.19
or bulk of 25 for £96.75

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 3/4 Inch Shoulder in A2 Stainless
WF60611 - 45 in stock

single screw for £1.45
or box of 15 for £20.66
or bulk of 75 for £99.01

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 7/8 Inch Shoulder in A2 Stainless
WF60612 - expected in 16 to 24 days

single screw for £4.52
or box of 4 for £17.65
or bulk of 20 for £84.76

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 1 Inch Shoulder in A2 Stainless
WF60613 - 8 in stock

single screw for £4.25
or box of 4 for £16.61
or bulk of 20 for £79.83

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 1-1/4 Inch Shoulder in A2 Stainless
WF60614 - 8 in stock

single screw for £6.29
or box of 3 for £18.58
or bulk of 15 for £89.12

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 1-1/2 Inch Shoulder in A2 Stainless
WF60615 - 8 in stock

single screw for £3.36
or box of 6 for £19.52
or bulk of 30 for £93.62

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 1-3/4 Inch Shoulder in A2 Stainless
WF60616 - 2 in stock

single screw for £7.12
or box of 3 for £21.08
or bulk of 15 for £100.93

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 2 Inch Shoulder in A2 Stainless
WF60617 - 20 in stock

single screw for £8.11
or box of 3 for £24.09
or bulk of 15 for £115.20

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 2-1/4 Inch Shoulder in A2 Stainless
WF60618 - 13 in stock

single screw for £10.51
or box of 2 for £20.88
or bulk of 10 for £100.00

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 2-1/2 Inch Shoulder in A2 Stainless
WF60619 - expected in 6 to 9 days

single screw for £12.92
or box of 2 for £25.62
or bulk of 10 for £122.83

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 2-3/4 Inch Shoulder in A2 Stainless
WF60679 - 23 in stock

single screw for £14.05
or box of 2 for £27.79
or bulk of 10 for £133.64

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 3 Inch Shoulder in A2 Stainless
WF60620 - 23 in stock

single screw for £15.52
or box of 2 for £30.56
or bulk of 10 for £147.49

£0.00

Socket Shoulder Screw UNC 1/4 with 5/16 x 3-1/2 Inch Shoulder in A2 Stainless
WF60680 - expected in 6 to 9 days

single screw for £16.22
or box of 2 for £31.89
or bulk of 10 for £154.16

£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 Summary

nominal diameter

1/4

diameter

5/16

D max.

max. diameter

0.3105

D min.

min. diameter

0.3085

dk max.

maximum head diameter

0.438

dk min.

minimum head diameter

0.419

k max.

maximum head height

0.219

k min.

minimum head height

0.209

drive size

5/32 (0.156)

d decimal

nominal diameter decimal

0.2500

tpi

threads per inch

minimum thread length

0.438

Standard

ASME B18.3

all dimensions in inches

Datasheet