Library › Hardware › Hex head screws, M3–M8

ISO 4017 M8 × 20 hex head, 13 AF × 5.3 head, thread as plain cylinder

ISO 4017 M8 × 20 hex head, 13 AF × 5.3 head, thread as plain cylinder

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

threadM8
width_af_mm13.0
corner_mm15.0
head_height_mm5.3
lengths_mm20, 25, 30, 40, 50
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From the full sheet

Hex head screws, M3–M8 (ISO 4017): every size, notes, mating features and sources. What size hex pocket holds an M5 hex head bolt so it can't turn?

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