{"product_id":"value-collection-jy4919650-hand-tap-1-1-2-12-unf","title":"Value Collection JY4919650 Hand Tap 1-1\/2-12 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION JY4919650 is a left-hand, plug-chamfer hand tap designed for cutting 1-1\/2-12 UNF internal threads in pre-drilled holes. Built from high speed steel with a bright uncoated finish, it delivers reliable performance across a range of workpiece materials in production and maintenance machining environments. The 4-flute straight flute geometry provides balanced cutting action and chip clearance. This tap meets a 3B class of fit with an H4 thread limit, making it suitable for standard tolerance internal thread applications. Overall length is 6-3\/8 inches and the tap weighs approximately 3.48 pounds.\u003c\/p\u003e\n\u003cp\u003eThis tap is used in machine shop, maintenance, repair, and fabrication settings where left-hand internal UNF threads are required. The plug chamfer, with its moderate lead-in length, makes it well suited for through-hole tapping and for following a taper or bottoming tap sequence when threading blind holes. It is typically run by hand or with a low-speed tapping attachment and is a practical choice for toolmakers, machinists, and maintenance technicians working with larger diameter fastener applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLeft-hand thread direction for applications requiring reverse-threaded fasteners or assemblies\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer provides a moderate 3-5 thread lead-in for versatile through-hole and blind-hole use\u003c\/li\u003e\n  \u003cli\u003e4-flute straight flute design balances cutting force and chip evacuation\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction offers good toughness and wear resistance across common workpiece materials\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish allows easy visual inspection of cutting edge condition\u003c\/li\u003e\n  \u003cli\u003e3B class of fit and H4 thread limit meet standard tolerance requirements for UNF internal threads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for cutting 1-1\/2-12 UNF left-hand internal threads in accordance with Unified National Fine thread standards. Suitable for use with standard tap wrenches and tapping attachments accepting the appropriate square-drive shank size for this tap diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed and operated by licensed machinists or skilled maintenance technicians using a tap wrench or low-speed tapping attachment. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill diameter for a 1-1\/2-12 UNF thread before starting. Apply appropriate cutting fluid for the workpiece material throughout the tapping operation to extend tool life and improve thread finish. Back off the tap periodically to break chips and prevent binding, particularly in deeper holes.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-1\/2-12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\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: H4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\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: 6-3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.48 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOversize\u003c\/strong\u003e: No\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: JY4919650\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51723441275186,"sku":"JY4919650","price":252.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/94627b500849b3a6567574adc5f594c5.jpg?v=1788604954","url":"https:\/\/voomisupply.com\/products\/value-collection-jy4919650-hand-tap-1-1-2-12-unf","provider":"Voomi Supply","version":"1.0","type":"link"}