49-TX-20-H Apex 1/4'' Torx Hex Power Drive Bits, Tamper Resistant

49-TX-20-H Apex 1/4” Torx Hex Power Drive Bits, Tamper Resistant

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Apex® 1/4” hex power drive Torx ® bits, tamper resistant with hole center post. Driver Size: T-20-H Major Diameter: 0.151 Body Diameter (in./mm): .171/ 4.3mm Overall Length (in./mm): 1 15/16” 49mm

Part Number: 49-TX-20-H Category: Apex 1/4'' Torx Hex Power Drive Bits, Tamper Resistant Brand: Apex Fastener Tools

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1/4” Apex Torx ® Power Drive Bits, Tamper Resistant Description

Apex 1/4” hex power drive Torx ® bits, tamper resistant with hole center post from Apex Fastener Tools, formally Cooper Tools. Tamper resistant Torx ® screws feature a post in the center of the recess this post will only fit into a tamper resistant Torx ® bit. Torx ® fasteners are becoming extremely common in automotive repair and appliance assembly. By design, Torx ® head screws resist cam-out better than Phillips ® head or Slotted head screws. Where Phillips ® heads were designed to cause the driver to cam-out, to prevent over tightening, Torx ® heads were designed to prevent cam-out. The reason for this was the development of better torque-limiting automatic screwdrivers for use in factories.