머리 스타일
팬, 트러스, 플랫, 타원형, 라운드, 헥스 키, 치즈
Product name
all types special screws
Grade
8.8,10.9,12.9,SAE J429 GR.5/GR.8
Length
all length available
material
alloy steel, carbon steel 35#,stainless steel, brass,copper...
Surface treatment
Black, Zinc Cr+3, Yellow Zinc Cr+6,H.D.G., Dacromet, etc.