{"product_id":"guhring-9043770021840-thread-forming-tap-2-56-unc","title":"Guhring 9043770021840 Thread Forming Tap 2-56 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9043770021840 is a thread forming tap designed for cutting 2-56 UNC internal threads in blind and through-hole applications. Unlike cutting taps, thread forming taps displace material rather than remove chips, producing stronger threads with a better surface finish. This tap is manufactured from High-Speed Steel-E-PM (powder metallurgy grade) and carries a TiCN coating for improved wear resistance and lubricity. With a 2BX class of fit and a modified bottoming chamfer of 2 to 3 threads, it is suited for threading close to the bottom of blind holes. Licensed machinists, tool-and-die makers, and maintenance technicians working on precision assemblies typically install this tap.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for use in steel, stainless steel, cast iron, and non-ferrous metals, covering material application codes P, M, K, and N. The modified bottoming chamfer makes it particularly useful when thread engagement must start near the bottom of a blind hole. Through-hole threading is also supported. With a flute-by-diameter ratio of 3xD and three oil grooves, it maintains adequate lubrication and thread form consistency across short, small-diameter holes common in precision mechanical and electrical assemblies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThread forming (chipless) design produces stronger threads and eliminates chip evacuation concerns in blind holes\u003c\/li\u003e\n  \u003cli\u003eTiCN coating increases surface hardness and reduces friction during tapping\u003c\/li\u003e\n  \u003cli\u003eHigh-Speed Steel-E-PM construction provides toughness and wear resistance beyond standard HSS grades\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer (2 to 3 threads) allows threading close to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003eThree oil grooves support consistent lubrication throughout the tapping operation\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction, 2BX class of fit, H3 and H4 thread limits for controlled tolerance output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole and through-hole threading in steel, stainless steel, cast iron, and non-ferrous metals where a 2-56 UNC thread form is required. Part of the GUHRING Series 4377.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap should be installed in a tapping head, CNC machine, or hand tap wrench rated for small-diameter work. Ensure the workpiece is rigidly fixtured before tapping to prevent tap breakage at this small diameter. Apply an appropriate cutting fluid or tapping oil compatible with the workpiece material before and during the operation. Because this is a forming tap, the pilot hole diameter must be sized to the forming tap specification, not the standard cutting tap drill chart, to achieve the correct 2BX class of fit.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 2-56\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2BX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3 and H4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 2 to 3 threads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.772 inches (45.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.441 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.441 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.141 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.110 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel-E-PM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil Grooves\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute to Diameter Ratio\u003c\/strong\u003e: 3xD\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: Steel, Stainless Steel, Cast Iron, Non-Ferrous Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 4377\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\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: GUHRING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9043770021840\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51742965432626,"sku":"9043770021840","price":71.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/23ba0eb51e24db710795777afa3fc0f6.jpg?v=1788840924","url":"https:\/\/voomisupply.com\/products\/guhring-9043770021840-thread-forming-tap-2-56-unc","provider":"Voomi Supply","version":"1.0","type":"link"}