Williams Comfort Products JHWISFXTM615 Flextension 3/8 Drive 15MM

Product Description

The WILLIAMS COMFORT PRODUCTS JHWISFXTM615 is a 3/8 inch drive Flextension combining a drive extension and socket into a single integrated unit. The 15 MM, 6-point socket is permanently joined to the extension via a TIG-welded retention pin, eliminating socket separation during continuous operation. Rated to a maximum working torque of 160 ft-lbs (1,920 in-lbs / 217 Nm), this Flextension is built for engine assembly, heavy equipment manufacturing, and mechanical repair environments where reliable, uninterrupted tool engagement is critical. It is designed for use with hand tools and direct-drive or impulse power tools only.

This Flextension is suited for production-line assembly, engine overhaul, and heavy equipment repair where socket separation from a standard extension would cause costly downtime. The integrated design keeps the socket positively retained throughout the work cycle. The drive end includes a 7/32 inch cross-hole bevel for ease of engagement, and the unit accommodates up to a 30-degree angle offset, allowing access to fasteners in restricted areas. It is not rated for impact tool use.

Key Features

• Integrated, non-removable socket and extension design prevents socket separation during use
• TIG-welded retention pin delivers full rotational power transfer to the socket
• SUPERTORQUE lobular socket opening increases turning power while protecting fastener geometry
• Up to 30-degree angle offset for access in tight or angled locations
• 7/32 inch cross-hole bevel on drive end for quick, positive engagement
• Black oxide finish for corrosion resistance
• Made in the U.S.A.

Compatibility

Designed for use with hand tools and direct-drive or impulse power tools accepting a 3/8 inch drive. Not compatible with impact tools.

Installation Notes

Installation and use should be performed by qualified mechanics or assembly technicians familiar with torque specifications and fastener requirements for the application. Always verify the drive tool type before use — this Flextension is not rated for impact wrenches or impact drivers. Do not exceed the maximum working torque of 160 ft-lbs. Inspect the unit for cracks or deformation before each use and remove from service if damage is found.

Technical Specifications

• Drive Size: 3/8 inch
• Socket Size: 15 MM
• Point Count: 6-Point
• Maximum Working Torque: 160 ft-lbs / 1,920 in-lbs / 217 Nm
• Angle Offset: Up to 30 degrees
• Drive End Cross-Hole Bevel: 7/32 inch
• Finish: Black Oxide
• Weight: 0.55 pounds
• Country of Origin: USA

Standard Information

• Brand: WILLIAMS COMFORT PRODUCTS
• Manufacturer Part Number: JHWISFXTM615