卵头自攻螺钉
 
 
Cross Oval head high-low thread zinc plated sharp point
Coating: zinc plated , black phosphate
Diameter: #6, #7, #8, #10  (M3,5  M3,9  M4,2  M4,8)
Length: 5/8”” to 4”  (16mm to 102mm)
Material: 1022A medium carbon steel, harden

 
 
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