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DIN 7981 cross recessed pan head sef-tapping screws
material: colding heading aacarburizing steel
surface hardness: >=450HV 0.3 s.sA2-A4
Dia:M1.6-M10 weight:0.18-8.76kg/1000pieces length:4.5-38mm
color :white & black
screw: fully thread
Surface: Zinc Plated, yellow zinc plated, black zinc plated, dacromat, mechanical coated and RoHS
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