{"product_id":"hertel-k010369as85-thread-forming-tap-1-4-20-unc","title":"Hertel K010369AS85 Thread Forming Tap 1\/4-20 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL K010369AS85 is a bottoming thread forming tap designed for cold-forming internal threads in ductile metals without cutting or producing chips. Sized at 1\/4-20 UNC with a right-hand thread direction, this tap displaces material rather than removing it, resulting in stronger thread flanks and longer tool life compared to cut taps. It is manufactured from high-speed steel and carries a TiCN coating for improved surface hardness and wear resistance. With an overall length of 2.5 inches and a thread length of 1 inch, it is suited to controlled-depth threading in production and maintenance environments. Licensed machinists and toolroom technicians are the primary installers.\u003c\/p\u003e\u003cp\u003eThis tap is intended for blind hole threading applications where chip evacuation is a concern or where thread strength requirements favor a formed thread over a cut thread. The bottoming chamfer style, with 1 to 2 chamfered threads, allows threading close to the bottom of a blind hole. Typical applications include threading aluminum, mild steel, and other ductile metals in manufacturing, repair, and fabrication settings. The H4 thread limit accommodates standard tolerance requirements for 1\/4-20 UNC fastener fits.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming design eliminates chips, reducing risk of chip packing in blind holes\u003c\/li\u003e\n\u003cli\u003eTiCN coating increases surface hardness and extends tool life in abrasive and high-cycle applications\u003c\/li\u003e\n\u003cli\u003eBottoming chamfer with 1-2 chamfered threads allows threading to near full depth in blind holes\u003c\/li\u003e\n\u003cli\u003eH4 thread limit for standard 1\/4-20 UNC tolerance requirements\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction for standard tapping operations\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for toughness in interrupted cuts and variable-speed setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in blind hole threading applications requiring a 1\/4-20 UNC right-hand internal thread in ductile metals; verify workpiece material is suitable for thread forming before use.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps require a specific tap drill size larger than that used for cut taps — consult a thread forming drill chart for the correct hole diameter before drilling. Secure the workpiece and use a calibrated tap handle or CNC tapping cycle with appropriate feed rate to avoid tap breakage. Apply a suitable tapping fluid or cutting oil rated for the workpiece material. Inspect the tap for wear or chipping regularly and replace before thread quality degrades.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Style\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 1-2P\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\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.191 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\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 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: K010369AS85\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51730947670322,"sku":"K010369AS85","price":51.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a337ffade88c62952d40d013f35a176a.jpg?v=1788725176","url":"https:\/\/voomisupply.com\/products\/hertel-k010369as85-thread-forming-tap-1-4-20-unc","provider":"Voomi Supply","version":"1.0","type":"link"}