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4-40 inch UNC Socket Head Button Screws ASME B18.3-2012 in A2 Stainless Steel

A popular and attractive socket head screw, typically used where aesthetics are important, or where a lower profile domed finish is required. The hex drive is generally smaller than other hex driven ranges and thus the ultimate tightening torque is reduced. Manufactured to ASME/ANSI B18.3, and always fully threaded.
Image of UNC Socket Head Button Screws ASME B18.3-2012 in A2 image
technical drawing of UNC Socket Head Button Screws ASME B18.3-2012
Technical Summary
d nominal diameter 4-40
tpi threads per inch 40
dk head diameter 0.213
k head height 0.052
t recess depth 0.035
s drive size 1/16
Standard ASME B18.3
Material A2 Stainless Steel
all dimensions in inches
datasheet
Description Sale Qtys Qty Price Breakdown Despatch Estimate
4-40 x 1/8 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17138
£0.00
4-40 x 3/16 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17139
£0.00
4-40 x 1/4 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17140
£0.00
4-40 x 5/16 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17141
£0.00
4-40 x 3/8 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17142
£0.00
4-40 x 1/2 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17144
£0.00
4-40 x 5/8 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17145
£0.00
4-40 x 3/4 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17146
£0.00
4-40 x 1 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17147
£0.00
4-40 x 1-1/4 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17148
£0.00
4-40 x 1-1/2 UNC Socket Head Button (Dome) Screw in A2 Stainless
WF17149
£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 Button Screws ASME B18.3-2012
Technical Summary
d nominal diameter 4-40
tpi threads per inch 40
dk head diameter 0.213
k head height 0.052
t recess depth 0.035
s drive size 1/16
Standard ASME B18.3
Material A2 Stainless Steel
all dimensions in inches
datasheet