Xem Studiomeasured geometry

Library › Hardware › Machine screws, inch (ASME B18.6.3): pan, 82° flat, round, truss…

3/8 pan head machine screw envelope

3/8 pan head machine screw envelope: head Ø18.80 (A max 0.740 in) x 5.38 mm (H max 0.212 in), top edge radius R max 0.143 in, slot 0.094 in wide (J max) x 0.100 in deep (T min), plain Ø9.525 mm shank, example length under the head 0.75 in (Xem's choice); no thread, Phillips cross 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")

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

Machine screws, inch (ASME B18.6.3): pan, 82° flat, round, truss, fillister heads #0 to 1/2 — head, slot and recess sizes + envelope models: every size, notes, mating features and sources. What are the head diameter, head height, slot and Phillips recess sizes of a #6-32 or 1/4-20 machine screw (pan, flat, round, truss, fillister)?

Other sizes