{"product_id":"williams-comfort-products-jhwisfx420-flextension-3-8-in-drive","title":"Williams Comfort Products JHWISFX420 Flextension 3\/8 in Drive","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe WILLIAMS COMFORT PRODUCTS JHWISFX420 is a Flextension — an integrated drive extension and socket combination engineered for demanding industrial fastening applications. The 3\/8 inch drive unit accepts a 5\/8 inch, 6-point socket that is permanently fixed to the extension body, eliminating the risk of socket separation during continuous operation. A TIG-welded retention pin transfers full rotational power directly to the socket. The SUPERTORQUE lobular socket opening grips fastener flats rather than corners, reducing deformation under load. Maximum working torque is rated at 160 ft-lbs (1,920 in-lbs \/ 217 Nm). The drive end features a 7\/32 inch cross-hole bevel for easier engagement. This tool is suited for licensed mechanics and assembly technicians working in high-cycle production or heavy equipment service environments.\u003c\/p\u003e\u003cp\u003eThe JHWISFX420 Flextension is used extensively in engine manufacturing, heavy equipment assembly, and mechanical repair operations where a standard extension-and-socket combination risks disengaging mid-task. The integrated design supports reliable, uninterrupted work cycles on both hand tools and power tools including impulse and direct-drive tools. The tool allows up to 30 degrees of angle offset, giving technicians access to fasteners in confined or angled locations. This unit is NOT rated for impact tool use and must not be used with impact drivers or impact wrenches.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIntegrated non-removable socket and extension body — socket cannot separate during use\u003c\/li\u003e\n\u003cli\u003eTIG-welded retention pin provides full rotational torque transfer\u003c\/li\u003e\n\u003cli\u003eSUPERTORQUE lobular 6-point opening reduces fastener deformation under high torque\u003c\/li\u003e\n\u003cli\u003eUp to 30 degrees of angle offset for access in confined spaces\u003c\/li\u003e\n\u003cli\u003e7\/32 inch cross-hole bevel on drive end for easier tool engagement\u003c\/li\u003e\n\u003cli\u003eBlack Oxide finish for corrosion resistance and reduced glare\u003c\/li\u003e\n\u003cli\u003eMade in the U.S.A.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with 3\/8 inch drive hand tools and power tools (impulse or direct drive). Not compatible with impact tools. Other lengths and socket sizes are available by special order through Snap-on Industrial Brands representatives.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis Flextension is intended for installation by qualified mechanics and industrial assembly technicians. Before use, confirm the tool is connected to a compatible 3\/8 inch drive hand tool or direct-drive power tool — never connect to an impact wrench or impact driver. Do not exceed the maximum working torque rating of 160 ft-lbs. Inspect the TIG-welded retention pin and socket opening for wear or damage before each use and remove the tool from service if deformation is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSocket Size\u003c\/strong\u003e: 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSocket Type\u003c\/strong\u003e: 6-Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Torque\u003c\/strong\u003e: 160 ft-lbs \/ 1,920 in-lbs \/ 217 Nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAngle Offset\u003c\/strong\u003e: Up to 30 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive End Cross-Hole Bevel\u003c\/strong\u003e: 7\/32 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e: USA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: WILLIAMS COMFORT PRODUCTS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: JHWISFX420\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WILLIAMS COMFORT PRODUCTS","offers":[{"title":"Default Title","offer_id":51343713861938,"sku":"JHWISFX420","price":122.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310543340.jpg?v=1782023997","url":"https:\/\/voomisupply.com\/products\/williams-comfort-products-jhwisfx420-flextension-3-8-in-drive","provider":"Voomi Supply","version":"1.0","type":"link"}