{"product_id":"osg-1295400-extension-tap-7-16-14-spiral-point-hss","title":"Osg 1295400 Extension Tap 7\/16-14 Spiral Point Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1295400 is a spiral point plug extension tap designed for threading operations that require greater reach than a standard-length tap provides. Built from high speed steel with a bright uncoated finish, this tap is intended for right-hand UNC threads at 7\/16-14 and carries an H3 thread limit with a 3B class of fit. The overall length of 6 inches and a reduced shank give it the extended reach needed to thread deep holes or recessed features. With 3 flutes and a spiral point geometry, it pushes chips forward ahead of the cut, making it well suited for through-hole tapping in production environments.\u003c\/p\u003e\u003cp\u003eThis tap is applied in machining and fabrication work where standard-length taps cannot reach the thread zone. It is compatible with aluminum, carbon steel, cast iron, and hardened steel workpieces. The plug chamfer style makes it appropriate for through-hole applications rather than blind holes. Machinists, toolroom technicians, and maintenance professionals working in job shops, manufacturing facilities, or field repair settings will find this tap fits common manual and CNC tapping setups. The 7\/16-14 UNC thread form is a widely used coarse thread standard in structural and mechanical assemblies.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSpiral point geometry pushes chips forward, reducing chip packing in through-hole tapping\u003c\/li\u003e\n\u003cli\u003eH3 thread limit provides controlled tolerance for 3B class of fit applications\u003c\/li\u003e\n\u003cli\u003eExtended 6-inch overall length with reduced shank for reaching deep or recessed holes\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction handles aluminum, carbon steel, cast iron, and hardened steel\u003c\/li\u003e\n\u003cli\u003ePlug chamfer suits through-hole threading applications\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish allows straightforward inspection and reconditioning\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use extension tap for 7\/16-14 UNC through-hole tapping operations across aluminum, carbon steel, cast iron, and hardened steel workpieces.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eExtension taps are installed and operated by machinists or maintenance technicians using standard tap holders, extension holders, or CNC tapping chucks sized to the reduced shank diameter. Ensure the workpiece is securely fixtured and the tap is aligned perpendicular to the hole before starting the thread. Use appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Inspect the tap for wear or chipping before each use, as a damaged cutting edge can produce out-of-tolerance threads.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/16-14\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\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.4375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTap Type\u003c\/strong\u003e: Spiral Point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.323 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.242 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.314 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Shank\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Carbon Steel, Cast Iron, Hardened Steel\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1295400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51736650088754,"sku":"1295400","price":107.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/481a8e081d2d82d27980b0e1c07757b0.jpg?v=1788779192","url":"https:\/\/voomisupply.com\/products\/osg-1295400-extension-tap-7-16-14-spiral-point-hss","provider":"Voomi Supply","version":"1.0","type":"link"}