Library › Hardware › Hex nuts M8, M10, M12, 3/8 in and 1/2 in

3/8 in hex nut, 14.29 across flats × 8.33

3/8 in hex nut, 14.29 across flats × 8.33: the flywheel weight

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

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

Dimensions

filenut-3-8in
thread3/8 in
across flats14.29
across corners16.5
thickness8.33
bore9.53
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From the full sheet

Hex nuts M8, M10, M12, 3/8 in and 1/2 in (flywheel weights): every size, notes, mating features and sources. What are the dimensions of the hex nuts that fill the flywheel pockets?

Other sizes