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Shanghai First Hardware Co.,Ltd.
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Click to enlarge image
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Bolts, nuts and washers:
1) Stud bolts (threaded rods) and hex bolts:
a) Material: ASTM A193 B7,A320 L7, ASTM A307, ASTM A325, A490, ASTM B150 C63000, Duplex SS31803
b) Specification: UNC, UNF ANSI B1.1, DIN 975 ANSI B18.2.1, ANSI B18.2.6 DIN931, DIN933
2) Nuts:
a) Material: ASTM A194 2H, ASTM A563, ASTM B150 C63000, Duplex SS31803
b) Specification: ANSI B 18.2.2, DIN 934,DIN985
3) Flat and spring washers:
a) Material: carbon steel and stainless steel, ASTM B150 C63000, Duplex SS31803
b) Specification: ANSI B 18.22.1, ANSI B18.21.1 DIN125, DIN127
4) Coating:
ZINC, H.D.G, CAD, Cadmium, XYLAN, PTFE, FLUORCARBON, BLACK
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