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Screw with flattened half round head with hexagon socket, imperial
Screw with flattened half round head with hexagon socket, imperial - 1
Screw with flattened half round head with hexagon socket, imperial - 2

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Screw with flattened half round head with hexagon socket, imperial

ASME B18.3, steel, alloy, low head, plain UNF (fine thread)

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1 INCH (in) = 25.4 mm


The "alloy" strength class is comparable with the metric strength class 12.9


The hexagon socket screws according to ASME B 18.3 have no strength class designation on the head as they only have one strength class according to the ASTM F835 mechanical properties.

Notice

Screws only suitable for limited loading, see also ASME 18.3 Table 3 and ASTM F835 Table 3 Point A