METRIC ROUND HEAD SHORT SQUARE NECK BOLTS
This standard covers the general and dimensional data for metric series round head short square neck bolts recognized as American National Standard and intended primarily for applications in thin metals.

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Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes – Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts (ISO 286-2:2010)
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