Self tapping screws for non-metal or soft metal, do not need to hit the bottom hole and tapping; Self tapping screws are pointed, so as to "self tapping"; Ordinary screws are flat - headed and of the same thickness.
SS304 Stainless Steel 316 Hex Washer Flange Self Tapping Bi-Metal Screws with EPDM Washer
|DIN,ASTM/ANSI JIS EN ISO,AS,GB
|Stainless Steel;Hot rust treasure;mechanical zinc plating
|Steel Grade: DIN: Gr.4,5,6,8.8,10,; SAE: Gr.2,5,8; ASTM: A563
Polishing, Plain, Sand Blasting;Hot rust treasure;mechanical zinc plating
hex bolt；socket bolt；carriage bolt；T bolt；thread rod
|Busy season:15-30days,Slack seaon:10-15days
|stainless steel:bolts and nuts
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