{"product_id":"tweco-1140-1209-mig-contact-tip-0-078-in-400a-25-pack","title":"Tweco 1140-1209 Mig Contact Tip 0.078 in 400A 25 Pack","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe TWECO 1140-1209 is a heavy-duty MIG contact tip designed for high-amperage semiautomatic welding applications up to 400 amps. Built from extruded or gun-drilled 122 DHP copper alloy and machined from copper alloy tubing, it delivers consistent electrical conductivity and a smooth inside diameter surface held to a tolerance of plus or minus 0.003 inches. The tip measures 1.47 inches in length with a 0.09-inch nominal bore, a 0.283-inch OD, and a 1\/4-28 UNF-2A thread. It accommodates 5\/64-inch (0.078-inch) wire and is sold in packs of 25. Licensed welding technicians and MIG welding professionals rely on this tip for sustained heavy-duty production welding cycles.\u003c\/p\u003e\n\u003cp\u003eThis contact tip is intended for use with Tweco No. 2, No. 3, and No. 4 MIG guns rated from 200 to 400 amps, as well as compatible specific MIG gun series. It fits both slip-on and thread-on nozzle styles. The tip locks in place with a quarter-turn clockwise twist, which also allows the operator to rotate the tip when the initial wear point is reached, exposing a new wear point and effectively doubling tip service life. Its thick-walled construction acts as a heat sink, drawing heat away from the arc source during extended welding operations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAccommodates 5\/64-inch (0.078-inch) MIG wire with 0.09-inch nominal bore\u003c\/li\u003e\n  \u003cli\u003e122 DHP copper alloy construction machined to plus or minus 0.003-inch ID tolerance for consistent wire feed\u003c\/li\u003e\n  \u003cli\u003eQuarter-turn twist-lock design secures tip to gas diffuser and increases electrical contact surface area\u003c\/li\u003e\n  \u003cli\u003eRotatable wear-point design doubles usable tip life without replacing the tip immediately\u003c\/li\u003e\n  \u003cli\u003eThick-walled heat-sink design conducts heat away from the arc source during high-amperage use\u003c\/li\u003e\n  \u003cli\u003ePart number and wire diameter marked directly on tip for fast identification during changeouts\u003c\/li\u003e\n  \u003cli\u003eRated for heavy-duty welding up to 400 amps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with Tweco No. 2, No. 3, and No. 4 MIG guns rated 200 to 400 amps. Compatible with both slip-on and thread-on nozzle styles. Thread size is 1\/4-28 UNF-2A.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified welding technicians. Power down and de-energize the MIG gun completely before replacing contact tips. Thread the tip hand-tight into the gas diffuser and verify the twist-lock engages before resuming welding. Inspect the diffuser threads for wear or spatter buildup before installing a new tip to ensure proper seating and electrical contact.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Diameter\u003c\/strong\u003e: 0.078 inches (5\/64 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore (Nominal ID)\u003c\/strong\u003e: 0.09 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.283 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 1.47 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF-2A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Amperage\u003c\/strong\u003e: 400 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eID Tolerance\u003c\/strong\u003e: plus or minus 0.003 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: 122 DHP copper alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 25 per pack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds (per unit)\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: TWECO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1140-1209\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TWECO","offers":[{"title":"Default Title","offer_id":51346255282482,"sku":"1140-1209","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/310545788.jpg?v=1782075336","url":"https:\/\/voomisupply.com\/products\/tweco-1140-1209-mig-contact-tip-0-078-in-400a-25-pack","provider":"Voomi Supply","version":"1.0","type":"link"}