{"product_id":"hertel-k010314as-thread-forming-tap-4-40-unc-plug-hss","title":"Hertel K010314AS Thread Forming Tap 4-40 Unc Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL K010314AS is a thread forming tap designed for creating internal threads in ductile metals without cutting or removing material. Operating on a cold-forming principle, it displaces material to generate strong, work-hardened threads. This plug-chamfer tap is configured for 4-40 UNC threading with a 2B and 3B class of fit, making it suitable for precision fastening applications in manufacturing, assembly, and maintenance environments. The high-speed steel construction provides durability across a range of ferrous and non-ferrous workpieces. With an overall length of 1.875 inches and a thread length of 0.5625 inches, it fits standard tap holders used by machinists and maintenance technicians.\u003c\/p\u003e\u003cp\u003eThis tap is used in through-hole threading applications where a clean, chip-free thread form is required. Its plug chamfer with 3 to 5 chamfered threads makes it well suited for through-holes in production and repair settings. The right-hand thread direction and H3 thread limit support consistent fitment with standard 4-40 UNC fasteners. It is commonly used by machinists, tool and die technicians, and maintenance professionals working with sheet metal, aluminum, and other machinable materials in light industrial and precision assembly contexts.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming design produces chip-free internal threads by displacing rather than cutting material\u003c\/li\u003e\n\u003cli\u003e4-40 UNC thread size with 2B and 3B class of fit for standard fastener compatibility\u003c\/li\u003e\n\u003cli\u003ePlug chamfer with 3 to 5 chamfered threads for easy starting in through-holes\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction for wear resistance across a variety of workpiece materials\u003c\/li\u003e\n\u003cli\u003eH3 thread limit ensures consistent thread tolerance control\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction with bright uncoated finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use thread forming tap for standard 4-40 UNC through-hole threading applications in compatible tap holders and tapping machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps require the correct tap drill size for the specific thread and material  -  consult a thread forming drill chart before use, as forming taps use a larger pilot hole than cutting taps. Use appropriate tapping fluid or cutting oil to reduce friction and extend tool life. Secure the workpiece firmly and use a calibrated torque driver or tapping machine to avoid tap breakage. Follow applicable workplace safety standards when operating rotating tooling.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\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: 2B and 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 3 to 5\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: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.5625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.875 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\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\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Through-Hole Threading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.07 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: K010314AS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51743960858930,"sku":"K010314AS","price":31.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4e6303642797d6bd013b8720784eb1c6.jpg?v=1788851989","url":"https:\/\/voomisupply.com\/products\/hertel-k010314as-thread-forming-tap-4-40-unc-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}