{"product_id":"kennametal-1112988-threading-insert-kc730-stub-acme-12-tpi","title":"Kennametal 1112988 Threading Insert KC730 Stub Acme 12 Tpi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 1112988 is a carbide threading insert designed for precision thread-cutting operations in both internal and external applications. Built to the NAS3R12 geometry and manufactured in the KC730 grade, this insert features a Titanium Nitride (TiN) finish applied via a PVD coating process. It belongs to the Top Notch series and is configured for right-hand cutting. The 29-degree included angle and 12 TPI pitch make it purpose-built for Stub Acme thread profiles. With a tip-to-top height of 0.1492 inches and a corner radius of 0.033 inches, it delivers consistent thread geometry across production and repair runs.\u003c\/p\u003e\u003cp\u003eThis insert is suited for threading operations on lathes and CNC turning centers where Stub Acme thread forms are required. Stub Acme threads appear in power transmission components, lead screws, and linear actuators in both industrial and maintenance environments. The right-hand configuration covers the most common thread direction in these applications. Machinists and toolroom operators working in job shops, manufacturing facilities, or maintenance shops will find this insert a direct fit for the Top Notch toolholding system. It handles internal and external thread profiles, reducing the need for separate tooling in mixed-threading setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eKC730 carbide grade with PVD-applied Titanium Nitride (TiN) coating for wear resistance\u003c\/li\u003e\n\u003cli\u003eStub Acme thread form at 29-degree included angle, 12 TPI internal pitch\u003c\/li\u003e\n\u003cli\u003eCompatible with both internal and external threading operations\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting orientation for standard thread direction\u003c\/li\u003e\n\u003cli\u003eTop Notch series insert style for use with compatible Top Notch toolholders\u003c\/li\u003e\n\u003cli\u003eInsert size 3 with a tip-to-top height of 0.1492 inches and corner radius of 0.033 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Kennametal Top Notch series toolholders that accept NAS-style threading inserts. Suitable for C2, C3, and C4 material grade classifications per the ANSI carbide grade system.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation of threading inserts should be performed by qualified machinists with the machine powered down and the spindle locked before insert exchange. Use the appropriate torque wrench and insert clamp hardware specified by the toolholder manufacturer to secure the insert without cracking the carbide. Verify insert seating and alignment before initiating a threading pass. Inspect the cutting tip and corner radius for wear or chipping at regular intervals during production use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NAS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: KC730\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C2, C3, C4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: Stub Acme\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal and External\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Pitch\u003c\/strong\u003e: 12 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 29 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Top Notch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip to Top of Insert\u003c\/strong\u003e: 0.1492 inches (3.79 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.033 inches (0.15 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth of Cutting Tip\u003c\/strong\u003e: 0.0327 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1949 inches (4.95 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1543 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23291804\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1112988\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51743249662258,"sku":"1112988","price":240.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5c01e39574cb326b3e11ffbbb0148489.jpg?v=1788844522","url":"https:\/\/voomisupply.com\/products\/kennametal-1112988-threading-insert-kc730-stub-acme-12-tpi","provider":"Voomi Supply","version":"1.0","type":"link"}