Apex EX-377-2 Socket Drive Adapter 3/8 to 1/2 Inch

Product Description

The APEX EX-377-2 is a drive socket adapter designed to convert a 3/8 inch square male drive to a 1/2 inch square female drive. With an overall length of 2 inches, this adapter gives technicians the flexibility to use 1/2 inch drive sockets with a 3/8 inch drive ratchet or extension. It meets ANSI standards and includes a pin lock retention feature to keep sockets secured during use. This type of adapter is a standard hand tool used across HVAC, plumbing, electrical, and general mechanical service work where mixed drive sizes are encountered on the job.

This adapter suits residential and commercial service environments where technicians carry both 3/8 inch and 1/2 inch drive tool sets. The pin lock design is particularly useful in tight or overhead installation positions where a dropped socket creates a hazard or delays the job. It is appropriate for any trade professional who regularly switches between drive sizes during equipment service, panel access, or mechanical assembly work.

Key Features

• Converts 3/8 inch square male drive to 1/2 inch square female drive
• Overall length of 2 inches for clearance in confined spaces
• Pin lock retention keeps sockets firmly seated during use
• Meets ANSI standards for drive tool dimensions and tolerances
• Compact single-piece adapter — no moving parts beyond the retention pin

Compatibility

Designed as an OEM-style drive adapter compatible with standard 3/8 inch male drive ratchets, extensions, and torque wrenches used with 1/2 inch square drive sockets meeting ANSI drive specifications.

Installation Notes

Installation requires no special tools — simply seat the 3/8 inch male end into the drive tool and insert the 1/2 inch socket onto the female end until the pin lock engages. Ensure the pin lock is fully engaged before applying torque to avoid socket separation. Do not use impact drivers with this adapter unless it is rated for impact use. Inspect the retention pin for wear periodically, especially in high-cycle service applications.