{"product_id":"harvey-tool-987156-c3-thread-mill-5-16-24-solid-carbide","title":"Harvey Tool 987156-C3 Thread Mill 5\/16-24 Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL 987156-C3 is a solid carbide helical flute thread mill designed for cutting internal 5\/16-24 UNF threads. With 3 flutes and an AlTiN coating, it delivers precise thread forms in hardened and abrasive materials. The cutting diameter measures 0.2450 inches with a length of cut of 0.9580 inches, making it well suited for threading shallow-to-moderate depth bores. Machinists and toolroom operators use this tool on CNC machining centers where helical interpolation produces accurate threads in a single tool path. The AlTiN coating improves heat resistance and extends tool life in dry or semi-dry cutting conditions.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is intended for internal threading operations on ferrous and non-ferrous workpieces requiring a 5\/16-24 thread form. It is commonly used in precision machining environments including aerospace, automotive, and general metalworking shops. The 0.3125 inch shank diameter fits standard ER collet chucks and shrink-fit holders used on vertical and horizontal machining centers. At 3.0 inches overall length, it provides adequate reach for most standard through-hole and blind-hole threading applications where helical interpolation is programmed at the control.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCuts 5\/16-24 UNF internal threads with 24 teeth per inch\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating resists heat and reduces built-up edge in abrasive materials\u003c\/li\u003e\n  \u003cli\u003e3-flute geometry balances chip evacuation with cutting edge strength\u003c\/li\u003e\n  \u003cli\u003e0.2450 inch cutting diameter with 0.9580 inch length of cut\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through design — suitable for external coolant or mist applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNC machining centers capable of helical interpolation, with a 0.3125 inch shank compatible with standard collet and shrink-fit toolholding systems requiring a 5\/16-24 internal thread mill.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation should be performed by a qualified machinist or CNC programmer familiar with thread milling cycles. Confirm toolholder runout is within acceptable tolerance before use, as excess runout directly affects thread quality. Program the helical interpolation path to match the 5\/16-24 thread pitch and verify the bore diameter provides sufficient clearance for the 0.2450 inch cutting diameter. Power down and lock out the spindle before changing or inspecting the tool.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch\u003c\/strong\u003e: 24 TPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.2450 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.9580 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242117\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: HARVEY TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 987156-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51733398323506,"sku":"987156-C3","price":382.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5cd14ea8e8bcad397794240293203429_90bf9bff-1368-4864-943f-04b1f54cc419.jpg?v=1788755161","url":"https:\/\/voomisupply.com\/products\/harvey-tool-987156-c3-thread-mill-5-16-24-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}