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#1 socket head cap screw envelope

#1 socket head cap screw envelope: head Ø3.00 mm (A max 0.118 in) x 1.85 mm (H max 0.073 in), hex socket 1/16 in across flats x 0.031 in deep (key engagement min), plain Ø1.854 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.

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

Dimensions

size#1
TPI UNC / UNF64 / 72
body D max / min (in)0.0730 / 0.0695
head A max / min (in)0.118 / 0.112
head height H max / min (in)0.073 / 0.070
hex socket nominal1/16 in
key engagement T min (in)0.031
wall min (in)0.025
fillet transition dia max / min (in)0.087 / 0.076
top chamfer max (in)0.005
bottom chamfer max (in)0.007
basic thread length LT (in)—
D max (mm, computed)1.854
head dia x height max (mm, computed)3.00 x 1.85
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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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