Williams Comfort Products JHWISFXT1212 Flextension 3/8 in

Product Description

The WILLIAMS COMFORT PRODUCTS JHWISFXT1212 is an integrated Flextension drive extension with a fixed 3/8 inch drive and 3/8 inch socket, designed for use in engine and heavy equipment manufacturing, assembly, and repair applications. Unlike standard ball-retained socket extensions, the socket and extension are joined in a single non-removable assembly, eliminating the risk of socket separation during continuous operation. The unit allows up to 30 degrees of angle offset and carries a maximum working torque rating of 160 ft-lbs (1920 in-lbs or 217 Nm). A black oxide finish provides corrosion resistance for shop environments. Suitable for hand tools and power tools including impulse and direct drive equipment. Not rated for impact tool use.

This Flextension is intended for professional assembly lines, maintenance shops, and heavy equipment repair facilities where uninterrupted fastener driving is critical. The integrated socket design supports reliable, high-cycle use without operator intervention to reseat the socket. The drive end features a 7/32 inch cross hole bevel for ease of engagement. Applications include engine assembly, drivetrain service, and structural fastener work where access angles require offset drive capability.

Key Features

• Integrated non-removable socket and extension design prevents socket separation during operation
• Up to 30 degrees of angle offset for fastener access in confined areas
• Maximum working torque: 160 ft-lbs / 1920 in-lbs / 217 Nm
• Socket retention pin is TIG welded for full rotational power transfer to the socket
• SUPERTORQUE lobular socket openings reduce fastener deformation under high torque
• 7/32 inch cross hole bevel on drive end for ease of engagement
• Durable black oxide finish for corrosion resistance
• Made in the U.S.A.

Compatibility

Designed for use with hand tools and power tools (impulse or direct drive) requiring a 3/8 inch drive connection. Not compatible with impact tools.

Installation Notes

Installation and use should be performed by qualified technicians familiar with drive tool operation and fastener torque requirements. Verify that the tool being used is rated for hand or direct drive operation before attaching this Flextension, as impact tool use is not permitted. Inspect the integrated socket and extension for wear or damage before each use. Ensure fastener and socket sizes are properly matched before applying torque.

Technical Specifications

• Drive Size: 3/8 inch
• Socket Size: 3/8 inch
• Maximum Working Torque: 160 ft-lbs / 1920 in-lbs / 217 Nm
• Maximum Angle Offset: 30 degrees
• Drive End Cross Hole Bevel: 7/32 inch
• Finish: Black Oxide
• Weight: 0.55 pounds
• Country of Origin: U.S.A.

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: JHWISFXT1212