{"product_id":"kennametal-4131321-hand-tap-5-16-18-unc-plug-hss-bright","title":"Kennametal 4131321 Hand Tap 5\/16-18 Unc Plug Hss Bright","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4131321 is a 5\/16-18 UNC straight flute hand tap designed for cutting right-hand internal threads in a range of workpiece materials. Built from high-speed steel with a bright uncoated finish, this tap delivers consistent thread quality in production and maintenance environments. The plug chamfer style features a gradual lead-in that distributes cutting forces across the leading threads, reducing tap breakage risk. With a class of fit rating of 3B and an H3 thread limit, it produces threads within standard tolerance ranges for general fastener applications. Machinists, tool-and-die makers, and maintenance professionals use this tap in hand tapping and low-speed machine tapping setups.\u003c\/p\u003e\u003cp\u003eThis tap is suited for threading cast iron and non-ferrous metals such as aluminum, brass, and copper alloys. The 3-flute straight flute geometry works best in through-hole applications where chips can exit freely along the flute channels. At 2.72 inches overall length with a 1.125-inch thread length, it fits standard tap handles and tapping attachments used in job shop, MRO, and light manufacturing settings. It belongs to the KENNAMETAL Series 5305 and 5303 product families.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 UNC thread form with right-hand cutting direction\u003c\/li\u003e\n\u003cli\u003ePlug chamfer for gradual thread engagement and reduced breakage risk\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for wear resistance across ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable for use with a wide range of cutting fluids\u003c\/li\u003e\n\u003cli\u003e3-flute straight flute geometry optimized for through-hole applications in cast iron and non-ferrous metals\u003c\/li\u003e\n\u003cli\u003eH3 thread limit and 3B class of fit for standard tolerance internal threads\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in cast iron and non-ferrous metal workpieces. Part of KENNAMETAL Series 5305 and 5303. Fits standard tap wrench handles and machine tapping holders sized for 5\/16-inch shank taps.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eHand tapping should be performed by a qualified machinist or maintenance technician using an appropriately sized tap wrench or tapping attachment. Secure the workpiece firmly before tapping and apply cutting fluid appropriate for the workpiece material to extend tap life and improve thread quality. Inspect the tap for chips or damage before each use and replace if cutting edges show wear or chipping. Follow applicable shop safety procedures and any relevant OSHA machine guarding requirements when using this tap in power tapping applications.\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\u003eChamfer Type\u003c\/strong\u003e: Plug\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\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\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\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.72 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.125 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Cast Iron, Non-Ferrous Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 5305, 5303\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.6 pounds\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: 4131321\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51741167518002,"sku":"4131321","price":39.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fab4b6e04ab36331d53770738c7e5d4d.jpg?v=1788829775","url":"https:\/\/voomisupply.com\/products\/kennametal-4131321-hand-tap-5-16-18-unc-plug-hss-bright","provider":"Voomi Supply","version":"1.0","type":"link"}