Non-standard screws, long screws, micro screws manufacturer / supplier in China, offering Grade 12.9 Black Flat Head Hex Socket Step Shoulder Axle Position Bolt High Strength Shoulder Axle Position Bolt M2.5 M3, 12.9 Grade/304 Stainless Steel Half Thread Hex Socket Shoulder Screw for Model Aircraft Axle Sleeve Bolt Smooth Shaft M2m2.5m3m4, Grade 12.9 High Strength External Hexagon Torx Head Security Screws M5 M6 Flange Serrated External Hex Anti-Theft Bolts and so on.
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