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UNC Socket Head Cap Screws ASME B18.3-2012 1/4 inch in Bright Zinc Plated (BZP) 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 at the same combination.
Image of UNC Socket Head Cap Screws ASME B18.3-2012 in BZP image
technical drawing of UNC Socket Head Cap Screws ASME B18.3-2012
Technical Summary
d nominal diameter 1/4
tpi threads per inch 20
dk head diameter 0.375
k head height 0.250
t recess depth 0.120
s drive size 3/16
b minimum thread length 1.00-1.50
Standard ASME B18.3-2003,ASTM F837-13e1(CW)
Material Bright Zinc Plated (BZP) Steel
all dimensions in inches
datasheet
Description Sale Qtys Qty Price Breakdown Despatch Estimate
Socket Head Cap (Allen) Screw UNC 1/4 x 3/8 inch in Zinc Plated Steel
(WF28962)
£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 1/2 inch in Zinc Plated Steel
(WF28963)
£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 5/8 inch in Zinc Plated Steel
(WF28964)
£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 3/4 inch in Zinc Plated Steel
(WF28965)
£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 7/8 inch in Zinc Plated Steel
(WF28966)
£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 1 inch in Zinc Plated Steel
(WF28967)
£0.00
Socket Cap (Allen) Screw UNC 1/4 x 1-1/4 inch in Zinc Plated Steel
(WF28968)
£0.00
Socket Cap (Allen) Screw UNC 1/4 x 1-1/2 inch in Zinc Plated Steel
(WF28969)
£0.00
Socket Cap (Allen) Screw UNC 1/4 x 1-3/4 inch in Zinc Plated Steel
(WF28970)
£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 2 inch in Zinc Plated Steel
(WF28971)
£0.00
Socket Cap (Allen) Screw UNC 1/4 x 2-1/4 inch in Zinc Plated Steel
(WF28972)
£0.00
Socket Cap (Allen) Screw UNC 1/4 x 2-1/2 inch in Zinc Plated Steel
(WF28973)
£0.00
Socket Cap (Allen) Screw UNC 1/4 x 2-3/4 inch in Zinc Plated Steel
(WF28974)
£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 3 inch in Zinc Plated Steel
(WF28975)
£0.00
Socket Cap (Allen) Screw UNC 1/4 x 3-1/2 inch in Zinc Plated Steel
(WF29197)
£0.00
Socket Head Cap (Allen) Screw UNC 1/4 x 4 inch in Zinc Plated Steel
(WF29198)
£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 1/4
tpi threads per inch 20
dk head diameter 0.375
k head height 0.250
t recess depth 0.120
s drive size 3/16
b minimum thread length 1.00-1.50
Standard ASME B18.3-2003,ASTM F837-13e1(CW)
Material Bright Zinc Plated (BZP) Steel
all dimensions in inches
datasheet