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The APEX EX-501-B-2 is a socket drive adapter designed to convert a 1/2 inch square male drive to a 7/16 inch female drive. With an overall length of 2-1/8 inches, this adapter bridges mismatched drive sizes on standard ratchets, torque wrenches, and impact-compatible hand tools. It meets ANSI standards, making it appropriate for professional trade use in HVAC, plumbing, electrical, and mechanical service applications. Weighing just 0.12 pounds, it is compact and easy to carry in a service bag or tool kit.
This adapter is used wherever a technician needs to run a 7/16 inch female socket from a 1/2 inch square drive tool. Common scenarios include tight-clearance fastener work during equipment installation or service, field repairs where a direct-fit socket is unavailable, and situations requiring a short drive extension between tool and fastener. The 2-1/8 inch overall length keeps the adapter low-profile without sacrificing reach.
Designed for use with standard 1/2 inch square drive ratchets, torque wrenches, and impact-compatible hand tools requiring a 7/16 inch female drive output.
No power source or shutoff is required for hand tool adapters. Verify that the male drive seats fully and securely into the drive tool before applying torque. Do not exceed the rated capacity of the lowest-rated tool or socket in the drive train. Inspect the adapter for wear or deformation before each use.
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