Apex 81277 Drive Adapter 3/8 in Female X 1/4 in Male

Product Description

The APEX 81277 is a drive adapter designed to connect tools and sockets with mismatched drive sizes. It accepts a 3/8 inch female drive input and steps down to a 1/4 inch male drive output, allowing technicians to use 1/4 inch drive sockets with a 3/8 inch drive ratchet or torque wrench. At 1 inch in overall length and 0.4 pounds, this compact adapter is suited for tight-access service work where switching drive sizes is necessary without swapping out the entire drive tool. Automotive technicians, mechanics, and general service professionals keep this type of adapter in their drive socket set for fast size transitions on the bench or in the field.

The 81277 is used in automotive, light truck, and general mechanical service applications where a 3/8 inch drive tool needs to engage 1/4 inch drive accessories. Typical use cases include underhood fastener work, interior panel removal, and other tasks where 1/4 inch drive sockets provide better access or lower torque control than a full 3/8 inch drive setup. Sold individually as a single unit.

Key Features

• 3/8 inch female drive input to 1/4 inch male drive output configuration
• Compact 1 inch overall length for use in space-restricted areas
• Lightweight at 0.4 pounds for easy handling during extended service work
• Single-piece adapter design with no moving parts to wear or fail
• Sold as individual unit for targeted replacement or kit supplementation

Compatibility

Designed as a standard drive adapter compatible with 3/8 inch female drive ratchets, extensions, and torque wrenches, and 1/4 inch male drive sockets and accessories conforming to common drive square dimensions.

Installation Notes

Install this adapter by seating the 3/8 inch female end fully onto the 3/8 inch drive square of the ratchet or extension until the detent ball engages. Attach the 1/4 inch drive socket or accessory to the male output end before applying torque. Do not exceed the torque rating of the smaller 1/4 inch drive side, as the output drive size is the limiting factor in the assembly. No special tools or codes are required for installation.

Technical Specifications

• Drive Input: 3/8 inch female
• Drive Output: 1/4 inch male
• Overall Length: 1 inch
• Weight: 0.4 pounds
• Sold As: Each
• UPC: 099575812774

Standard Information

• Brand: APEX
• Manufacturer Part Number: 81277