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5/8 socket head cap screw envelope

5/8 socket head cap screw envelope: head Ø23.83 mm (A max 0.938 in) x 15.88 mm (H max 0.625 in), hex socket 1/2 in across flats x 0.307 in deep (key engagement min), plain Ø15.875 mm shank (D max), example length under the head 1.5 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.

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

Dimensions

size5/8
TPI UNC / UNF11 / 18
body D max / min (in)0.6250 / 0.6163
head A max / min (in)0.938 / 0.921
head height H max / min (in)0.625 / 0.616
hex socket nominal1/2 in
key engagement T min (in)0.307
wall min (in)0.238
fillet transition dia max / min (in)0.689 / 0.664
top chamfer max (in)0.070
bottom chamfer max (in)0.015
basic thread length LT (in)1.750
D max (mm, computed)15.875
head dia x height max (mm, computed)23.83 x 15.88
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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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