モデル番号
DIN933 DIN931 DIN6914
Item
hot dip galvanized grade8.8 grade 10.9 hex bolt nut and washer
Standard
DIN933 DIN931 DIN6914 A325 ISO4017
Grade
4.6, 4.8, 8.8, 10.9, 12.9, AISI 2, AISI 5, AISI 8, AISI 10.
Material
alloy steel, carbon steel 35# / 45#, stainless steel316,304, brass....
Surface treatment
HDG, Black, Zinc Cr+3, Yellow Zinc Cr+6, Dacromet, etc.