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1 D4 6 50 3T 2R0
and enhances the drill bit’s lifespan
carbon steel and alloy steel finishing and semi-finishing
300-400 aluminum parts
BB Screw Torx Head BF2055 1 D4 6 50 3TBB Screw A: 1021 steel AA: SCM435, higher durability, 12. 9 standard. The head diameter of M5 is about 7mm BB Torx Keys Click on the image and select Quenching and Hardening, Not Easy to Slip Wire Through multiple quenching, the hardness of the screws is enhanced, effectively avoiding the problem of screws being prone to slipping Stable and More Secure Locking Force Increase the depth of the thread teeth, ensure uniform and stable torque, and enhance
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