{"product_id":"eagle-cutting-tool-chd-440-i-4-40nc-carbon-hex-rethread-die","title":"Eagle Cutting Tool CHD-440-I 4-40NC Carbon Hex Rethread Die","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe EAGLE CUTTING TOOL CHD-440-I is a 4-40NC carbon hex rethread die designed to restore damaged or corroded external threads on 4-40 unified coarse fasteners. The hexagonal body allows standard open-end or box wrenches to drive the die without a dedicated die stock, making it a practical addition to a field technician's thread repair kit. It is used across plumbing, electrical, HVAC, and general mechanical trade work wherever small-diameter machine screw threads require cleanup or restoration rather than full re-cutting from blank stock.\u003c\/p\u003e\n\u003cp\u003eThis rethread die suits light-duty thread restoration tasks on 4-40NC threaded rods, machine screws, and fasteners found in control panels, electrical enclosures, and mechanical assemblies. The hex body profile is compatible with standard wrenches, eliminating the need for a round die wrench in field applications. It is appropriate for use by electricians, HVAC technicians, plumbers, and general maintenance trades working on equipment with 4-40 unified coarse threaded fasteners.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-40NC thread profile for unified coarse thread restoration on small-diameter fasteners\u003c\/li\u003e\n  \u003cli\u003eHex body design accepts standard open-end or box wrenches for wrench-driven operation without a die stock\u003c\/li\u003e\n  \u003cli\u003eCarbon steel construction provides adequate hardness for thread chasing and restoration on ferrous and non-ferrous fasteners\u003c\/li\u003e\n  \u003cli\u003eCompact form factor suits field repair kits and service vans\u003c\/li\u003e\n  \u003cli\u003eMinimum order quantity of 1 unit allows single-piece procurement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use on 4-40 unified coarse (4-40NC) externally threaded fasteners. Suitable as a rethread die for machine screws and threaded rods conforming to the 4-40NC thread standard.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread restoration dies should be used by qualified tradespeople familiar with hand-threading tools and proper die alignment. Before use, ensure the fastener and die are clean and lightly lubricated with cutting oil to reduce wear and improve thread quality. Always start the die square to the fastener axis to avoid cross-threading. Follow applicable worksite safety procedures when working in energized enclosures or pressurized systems.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40NC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Style\u003c\/strong\u003e: Hex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDie Type\u003c\/strong\u003e: Rethread\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Carbon Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.96 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: EAGLE CUTTING TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: CHD-440-I\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EAGLE CUTTING TOOL","offers":[{"title":"Default Title","offer_id":51233983037746,"sku":"CHD-440-I","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307622076.png?v=1780113974","url":"https:\/\/voomisupply.com\/products\/eagle-cutting-tool-chd-440-i-4-40nc-carbon-hex-rethread-die","provider":"Voomi Supply","version":"1.0","type":"link"}