High strength structural bolt&nut&washer set(ASTM a325/a490 ASTM a563 ASTM f436)
Standard: ASME B18.2.6; ASME B18.2.3.7M; ASME B18.2.2; ASME B18.2.4.6M;
Dia.: 1/2"-1 1/2", M12~M36
Length:1 1/4"-12",30-300mm;
Material/Grade: bolt-ASTM a325/a490; nut-ASTM a563; washer-ASTM f436
Surface treatment: plain, black oxygenation, zinc plated, hot dip galvanizing, etc.