Williams Comfort Products JHWISFX412 Flextension 3/8 in Drive

Product Description

The WILLIAMS COMFORT PRODUCTS JHWISFX412 is a Flextension socket extension combining a drive extension and socket into a single integrated unit. The socket retention pin is TIG welded directly to the extension, eliminating the risk of the socket separating during continuous operation. Designed for 3/8 inch drive tools, this 6-point extension delivers up to 160 ft. lbs. of working torque. The SUPERTORQUE lobular socket opening transfers turning force to the flat faces of a fastener rather than the corners, reducing fastener deformation under load. Weighing 0.4 pounds and made in the U.S.A., it is built for demanding, repetitive-use environments.

This Flextension is used extensively in engine assembly, heavy equipment manufacturing, and mechanical repair applications where a standard socket-and-extension combination is prone to disconnection. The integrated non-removable design maintains socket engagement during both hand-tool and power-tool use, including impulse and direct drive tools. The drive end features a 7/32 inch cross hole bevel for easier bit engagement, and the unit allows up to 30 degrees of angle offset to reach fasteners in confined spaces. This product is not rated for impact tool use.

Key Features

• Integrated TIG-welded socket retention pin prevents socket separation during use
• SUPERTORQUE lobular 6-point opening reduces fastener deformation under load
• Maximum working torque: 160 ft. lbs. / 1920 in. lbs. / 217 Nm
• Up to 30 degrees of angle offset for confined-space fastener access
• 7/32 inch cross hole bevel on drive end for ease of engagement
• Compatible with hand tools and power tools (impulse or direct drive); not for impact tool use
• Durable black oxide finish; made in the U.S.A.

Compatibility

Designed for use with 3/8 inch drive hand tools and power tools (impulse or direct drive). Not intended for impact tool use. Other lengths and socket sizes are available by special order.

Installation Notes

Installation and use should be performed by qualified mechanics or technicians familiar with fastener torque requirements for the application. Confirm the drive size matches the tool before use. Do not exceed the maximum working torque of 160 ft. lbs. This tool is not rated for impact drivers or impact wrenches and should not be used with them.

Technical Specifications

• Drive Size: 3/8 inch
• Socket Size: 3/8 inch
• Point Configuration: 6-point
• 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: 0.4 pounds
• Country of Origin: U.S.A.

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: JHWISFX412