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#2 socket head cap screw envelope

#2 socket head cap screw envelope: head Ø3.56 mm (A max 0.140 in) x 2.18 mm (H max 0.086 in), hex socket 5/64 in across flats x 0.038 in deep (key engagement min), plain Ø2.184 mm shank (D max), example length under the head 0.25 in (Xem's choice); no thread, top chamfer, fillet or socket cone

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

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Dimensions

size#2
TPI UNC / UNF56 / 64
body D max / min (in)0.0860 / 0.0822
head A max / min (in)0.140 / 0.134
head height H max / min (in)0.086 / 0.083
hex socket nominal5/64 in
key engagement T min (in)0.038
wall min (in)0.029
fillet transition dia max / min (in)0.102 / 0.090
top chamfer max (in)0.008
bottom chamfer max (in)0.007
basic thread length LT (in)—
D max (mm, computed)2.184
head dia x height max (mm, computed)3.56 x 2.18
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From the full sheet

Socket head cap screws, inch #0 to 1-1/2 (ASME B18.3): head, hex socket, key engagement — full size table + models #0 to 1: every size, notes, mating features and sources. What are the head diameter, head height and hex key size of a #4-40, #8-32, 1/4-20, 5/8-11 or 1 in socket head cap screw?

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