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Library › Hardware › Flat head socket cap screws, inch (ASME B18.3, 82° countersunk) #0…

1/4 flat head socket cap screw envelope

1/4 flat head socket cap screw envelope: 82° cone from Ø13.49 mm (A max 0.531 in) to the Ø6.350 mm body over 4.09 mm (H max 0.161 in), hex socket 5/32 in across flats x 0.111 in deep (key engagement min), plain shank, example overall length head top to tip 1 in (Xem's choice); no thread, spline option, socket cone or point

Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

size1/4
TPI UNC / UNF20 / 28
body D max / abs. min (in)0.2500 / 0.2435
head A max / min (in)0.531 / 0.480
head height H max (in)0.161
hex socket (nominal)5/32 in
spline socket (nominal).183 in
key engagement min (in)0.111
cone height, computed (in)0.162
head dia x height max (mm, computed)13.49 x 4.09
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From the full sheet

Flat head socket cap screws, inch (ASME B18.3, 82° countersunk) #0 to 1-1/2: head, hex socket, key engagement + models #0 to 1: every size, notes, mating features and sources. What are the head diameter, head height, hex key and countersink angle of a 1/4-20 or #10-24 flat head socket cap screw?

Other sizes