Xem Studiomeasured geometry

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

#1 flat head socket cap screw envelope

#1 flat head socket cap screw envelope: 82° cone from Ø4.27 mm (A max 0.168 in) to the Ø1.854 mm body over 1.37 mm (H max 0.054 in), hex socket .050 in across flats x 0.031 in deep (key engagement min), plain shank, example overall length head top to tip 0.25 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

size#1
TPI UNC / UNF64 / 72
body D max / abs. min (in)0.0730 / 0.0695
head A max / min (in)0.168 / 0.143
head height H max (in)0.054
hex socket (nominal).050 in
spline socket (nominal).060 in
key engagement min (in)0.031
cone height, computed (in)0.055
head dia x height max (mm, computed)4.27 x 1.37
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

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