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

3/8 round head machine screw envelope

3/8 round head machine screw envelope: spherical cap through Ø17.98 mm (A max 0.708 in) and 6.50 mm high (H max 0.256 in), slot 0.094 in x 0.117 in deep, plain Ø9.525 mm shank, example length 0.75 in (Xem's choice); the real head has a short side wall, not drawn

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

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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