{"product_id":"hertel-k008942as-tap-set-1-12-unf-4-flute-hss-bright","title":"Hertel K008942AS Tap Set 1-12 Unf 4 Flute Hss Bright","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL K008942AS is a 3-piece tap set ground to 1-12 UNF specifications for cutting right-hand internal threads in ferrous and non-ferrous materials. Built from high speed steel with a bright finish, this set carries a 4-flute geometry and an H4 thread limit, making it well suited for threading operations that demand close dimensional control. Overall length is 5.125 inches with a thread length of 2.5 inches. The 3B class of fit designation targets standard tolerance applications in production and maintenance environments. Machinists, toolmakers, and maintenance technicians reach for this set when cutting 1-12 UNF threads in manual or CNC tapping operations.\u003c\/p\u003e\u003cp\u003eThis tap set is used in machine shops, manufacturing facilities, and field maintenance settings where 1-12 UNF threads are required. The 1-inch, 12-thread-per-inch unified fine thread form is common in precision assemblies, hydraulic fittings, and heavy equipment components where fine thread engagement provides higher tensile strength and resistance to loosening under vibration. The 4-flute design handles through-hole and blind-hole applications in a range of workpiece materials including steel, cast iron, aluminum, and brass.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-12 UNF thread form for precision fine-thread applications\u003c\/li\u003e\n\u003cli\u003e4-flute geometry promotes clean chip formation and accurate thread form\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction provides durability across a wide range of materials\u003c\/li\u003e\n\u003cli\u003eH4 thread limit for controlled tolerance threading\u003c\/li\u003e\n\u003cli\u003eBright finish for easy visual inspection and standard lubrication compatibility\u003c\/li\u003e\n\u003cli\u003e3B class of fit meets standard tolerance requirements for general assembly\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in any tapping application requiring 1-12 UNF right-hand internal threads with a 3B class of fit. Compatible with standard tap wrenches, tapping heads, and CNC rigid-tapping spindles accepting straight-shank tooling of appropriate diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTap installation should be performed by a qualified machinist or maintenance technician familiar with thread cutting procedures. Always secure the workpiece and use the appropriate cutting fluid for the workpiece material before beginning the tapping operation. Verify correct tap drill size per UNF standards before drilling the pilot hole. Inspect the tap for wear or chipping before each use and discard any damaged tap immediately to avoid thread damage or breakage in the workpiece.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-12 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: Bright\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePieces\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: K008942AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51728690577714,"sku":"K008942AS","price":525.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/37fde48f2b4cf4b8119166f24ccb19ab.jpg?v=1788695081","url":"https:\/\/voomisupply.com\/products\/hertel-k008942as-tap-set-1-12-unf-4-flute-hss-bright","provider":"Voomi Supply","version":"1.0","type":"link"}