{"product_id":"value-collection-jy4849212-straight-flute-tap-1-20-unef","title":"Value Collection JY4849212 Straight Flute Tap 1-20 Unef","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION JY4849212 is a straight flute bottoming tap designed for cutting internal threads in blind holes where full thread engagement close to the bottom of the hole is required. Manufactured from high-speed steel with a bright, uncoated finish, this tap is built for durability under normal cutting conditions. It is configured in a 1-20 UNEF thread size with four flutes, a right-hand thread direction, and an H4 thread limit, making it well suited for producing precise, close-tolerance threads in ferrous and non-ferrous materials. The overall length measures 5.125 inches.\u003c\/p\u003e\u003cp\u003eThis tap is used in machine shops, maintenance facilities, and production environments where fine-pitch unified extra-fine threads are required. The bottoming chamfer — typically two threads of lead — allows threading to within a few threads of a blind hole bottom, which is common in aerospace, hydraulic component, and precision instrument applications. It is appropriate for use in manual tapping operations and compatible with standard tap handles and tapping machines.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer for threading close to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003e1-20 UNEF thread specification for fine-pitch unified extra-fine applications\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for wear resistance across a wide range of materials\u003c\/li\u003e\n\u003cli\u003eFour flutes provide balanced chip evacuation and cutting stability\u003c\/li\u003e\n\u003cli\u003eH4 thread limit for controlled tolerance in 3B class of fit applications\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, bright uncoated finish suitable for use with cutting fluids\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or standard tooling choice for applications requiring a 1-20 UNEF bottoming tap with a 3B class of fit and H4 thread limit.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap should be installed and operated by a qualified machinist or toolroom technician. Secure the workpiece fully before tapping and ensure the tap is aligned perpendicular to the hole to avoid thread distortion or tap breakage. Apply an appropriate cutting fluid for the workpiece material to extend tool life and improve thread quality. Never apply excessive torque — back the tap off periodically to break and clear chips, especially in deep or blind hole applications.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNEF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Bottoming\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: H4\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: 5.125 inches\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: VALUE COLLECTION\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: JY4849212\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51700719190322,"sku":"JY4849212","price":117.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cce744eb29acfade44f0b1d9fab5a297.jpg?v=1788394324","url":"https:\/\/voomisupply.com\/products\/value-collection-jy4849212-straight-flute-tap-1-20-unef","provider":"Voomi Supply","version":"1.0","type":"link"}