Non-standard round head bolts with hole
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Diameter: M2/M3/M4/M5/M6/M8/M10/M12/M14/M16/M20
Thread Length: 4-300MM
Grade: 4.8/6.8/8.8/10.9/12.9
Grade: 2/5/8
Material: Carton steel
Surface Treatment: plain /white and blue plated /yellow plated/ black plated /HDG / customer request
Packing: Bulk/small box/customer request