Screw with flattened half round head with hexagon socket, imperial ASME B18.3, plain steel alloy, low head, UNC (comparable with ISO metric thread)
ASME B18.3 steel alloy plain UNC
SCR-BUT-SOC-ALLOY-(PL)-6_32X1/4
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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.
Screws only suitable for limited loading, see also ASME 18.3 Table 3 and ASTM F835 Table 3 Point A
Datasheets(X)
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