{"product_id":"milwaukee-tool-49-57-5308-hex-rethreading-die-4-40-unc","title":"Milwaukee Tool 49-57-5308 Hex Rethreading Die 4-40 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MILWAUKEE TOOL 49-57-5308 is a hex rethreading die designed to restore damaged or corroded external threads quickly in the field. Built from carbon steel, this die cuts right-hand threads to the 4-40 UNC standard, making it suitable for restoring small-diameter fastener threads common in electrical enclosures, control panels, and light mechanical assemblies. The hex body measures 1.0 inches across and follows the Hex-LOK series design, allowing it to seat securely in a standard rethreading die handle or wrench. At 0.07 pounds, it is compact enough to carry in a service bag without adding bulk. Electricians, HVAC technicians, and general maintenance mechanics reach for this die when a bolt or stud thread is too damaged to accept a nut but replacement is not practical.\u003c\/p\u003e\u003cp\u003eThis die is intended for use on 4-40 UNC threaded fasteners found in residential and light commercial equipment. Typical applications include restoring machine screw threads on control board mounting studs, panel screws, and small-frame electrical components. The fixed, non-adjustable design ensures consistent thread geometry with every pass, reducing rework on the job site. It is sold as a single die and is well-suited for technicians who carry individual dies matched to the fastener sizes common in their trade.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4-40 UNC right-hand thread standard for compatibility with common small-diameter machine screws\u003c\/li\u003e\n\u003cli\u003eCarbon steel construction provides durability for repeated field use\u003c\/li\u003e\n\u003cli\u003e1.0-inch hex body fits standard Hex-LOK die handles and wrenches\u003c\/li\u003e\n\u003cli\u003eFixed, non-adjustable design ensures consistent thread depth and pitch on every pass\u003c\/li\u003e\n\u003cli\u003eLightweight at 0.07 pounds — easy to carry in a tool pouch or service kit\u003c\/li\u003e\n\u003cli\u003eHex-LOK series design seats securely to prevent slipping during operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Hex-LOK series rethreading die handles and standard 1.0-inch hex die stocks. Restores 4-40 UNC right-hand external threads on machine screws, studs, and bolts.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eRethreading dies are installed by a mechanic, electrician, or HVAC technician performing thread restoration on fasteners in place or removed from the assembly. Power down and de-energize any equipment before attempting thread repair on installed fasteners. Apply a thread-cutting lubricant to the die before starting to reduce friction and extend die life. Turn the die in small increments, backing off periodically to clear chips, following standard hand-tapping practice.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex Size\u003c\/strong\u003e: 1.0 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Hex-LOK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.07 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MILWAUKEE TOOL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 49-57-5308\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MILWAUKEE","offers":[{"title":"Default Title","offer_id":51696509321522,"sku":"49-57-5308","price":16.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/30c1d733e89a90a6d4c104c06cb03c7c.jpg?v=1788343388","url":"https:\/\/voomisupply.com\/products\/milwaukee-tool-49-57-5308-hex-rethreading-die-4-40-unc","provider":"Voomi Supply","version":"1.0","type":"link"}