Menu

ADAPTER 1/4" F X 3/8" M IMP DR - Stanley Proto Industrial Tools

Part #: J5256B

The Stanley Proto J5256B ADAPTER is an indispensable tool for professional mechanics and industrial technicians, engineered to enhance the versatility of your existing impact drive tooling. This robust adapter efficiently converts a 1/4-inch female drive to a 3/8-inch male drive, allowing for seamless integration of smaller drive accessories with larger impact wrenches or ratchets, optimizing your workflow in demanding environments.

Key Features

  • Impact-Grade Construction: Manufactured from high-strength alloy steel, this adapter is specifically designed to withstand the high torque and shock loads inherent in impact applications, ensuring exceptional durability and longevity.
  • Corrosion Resistant Finish: A black oxide finish provides enhanced resistance to corrosion, extending the tool's life even in harsh workshop conditions.
  • Precision Machined Fit: Engineered for a secure and precise fit, the adapter minimizes play and slippage, ensuring reliable power transfer and preventing damage to fasteners or tools.
  • Drive Size Conversion: Seamlessly allows the use of 1/4-inch square drive accessories, such as sockets and bit holders, with 3/8-inch square drive impact tools.
  • Professional Reliability: Built to Stanley Proto Industrial Tools' rigorous standards, ensuring professional-grade performance and reliability for critical tasks.

Applications

The Stanley Proto J5256B impact adapter is ideal for a wide range of automotive and industrial tasks where drive size conversion is necessary. It enables technicians to connect 1/4-inch drive sockets, bit holders, or extensions to 3/8-inch drive impact wrenches or air ratchets, optimizing tool usage without needing multiple sets. Common applications include engine bay work requiring smaller fasteners, detailed assembly/disassembly, and accessing confined spaces with compact 1/4-inch drive accessories while leveraging the power of 3/8-inch drive impact tools. This adapter is essential for tasks requiring a balance of precise control and robust impact force across various fastening applications.

Only 1 left in stock - order soon

$11.42

Add to Cart:

This product was added to our catalog on Saturday 06 June, 2026.

Similar Products

Stanley Proto Industrial Tools
Stanley Proto Industrial Tools
Stanley Proto Industrial Tools
Stanley Proto Industrial Tools
Stanley Proto Industrial Tools
Stanley Proto Industrial Tools
Stanley Proto Industrial Tools
Stanley Proto Industrial Tools
ADAPTER 1/2F X 3/8M
ADAPTER 1/2F X 3/8M
Your Price: $13.22
Stanley Proto Industrial Tools
1" SQ MALE X #5 SPLINE ADAPTER
1" SQ MALE X #5 SPLINE ADAPTER
Your Price: $121.76
Stanley Proto Industrial Tools
ADAPTER 3/8F X 1/4M
ADAPTER 3/8F X 1/4M
Your Price: $12.92