{"product_id":"kennametal-1544534-hand-tap-5-16-18-plug-unc-tin-hss","title":"Kennametal 1544534 Hand Tap 5\/16-18 Plug Unc Tin Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 1544534 is a 5\/16-18 straight-flute hand tap designed for cutting right-hand internal threads in ferrous materials. Built from high-speed steel with a titanium nitride (TiN) coating, it provides increased surface hardness and extended tool life compared to uncoated alternatives. The plug chamfer style — with roughly 3 to 5 lead threads — makes it suited for through-hole tapping and starting a thread in a pre-drilled hole. With a 4-flute design and an H3 thread limit, this tap holds tight tolerances for a 3B class of fit. Overall length is 2.719 inches and thread length is 1.125 inches. Licensed machinists, tool-and-die makers, and maintenance technicians routinely specify this tap for production and repair threading operations.\u003c\/p\u003e\u003cp\u003eThis tap is intended for hand tapping applications in cast iron, stainless steel, and carbon or alloy steel workpieces. The UNC (Unified National Coarse) thread form at 5\/16-18 is one of the most common fastener thread sizes in North American industrial and maintenance work, making this tap a practical choice for both production shops and field repair scenarios. The TiN coating reduces galling when threading stainless steel and extends tap life in abrasive cast iron. It is cataloged under Kennametal Series 2305 and 2314.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eHigh-speed steel construction for toughness and re-sharpenability\u003c\/li\u003e\n\u003cli\u003eTitanium nitride (TiN) coating for improved wear resistance and reduced friction\u003c\/li\u003e\n\u003cli\u003ePlug chamfer (approximately 3 to 5 lead threads) suited for through-hole and starter threading\u003c\/li\u003e\n\u003cli\u003e4-flute straight-flute geometry for chip control in ferrous materials\u003c\/li\u003e\n\u003cli\u003eH3 thread limit maintains consistent 3B class-of-fit tolerances\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction — standard for UNC 5\/16-18 applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 5\/16-18 UNC right-hand internal threads in cast iron, stainless steel, and steel workpieces. Compatible with standard tap wrenches and tapping heads that accept taps with a 0.318-inch shank diameter. Listed under Kennametal Series 2305 and 2314.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eHand taps should be installed in a proper tap wrench or T-handle — never driven with an impact tool. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill size for a 5\/16-18 UNC thread before starting. Apply appropriate cutting fluid for the workpiece material, particularly when threading stainless steel, to reduce heat and prevent tap breakage. Back the tap out periodically to break and clear chips during the threading cycle.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\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\u003eChamfer Style\u003c\/strong\u003e: Plug\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\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.719 inches (2-23\/32 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.125 inches (1-1\/8 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.318 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Cast Iron, Stainless Steel, Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2305, 2314\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: 1544534\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51735261970738,"sku":"1544534","price":40.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0563a5f91bd55882d928c8e2b10cc55e.jpg?v=1788771142","url":"https:\/\/voomisupply.com\/products\/kennametal-1544534-hand-tap-5-16-18-plug-unc-tin-hss","provider":"Voomi Supply","version":"1.0","type":"link"}