Countersunk head screw
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Countersunk head screw
ASME 18.3 steel alloy plain UNC (standard thread)
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Variants
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.
Select RAL-colour code
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