{"product_id":"guhring-9039400041660-thread-forming-tap-8-32-unc","title":"Guhring 9039400041660 Thread Forming Tap 8-32 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9039400041660 is a thread forming tap designed for creating internal 8-32 UNC threads without cutting chips, making it well-suited for applications where chip evacuation is a concern. Built from High-Speed Steel-E-CO (cobalt-enhanced HSS) and coated with Titanium Nitride (TiN), this tap offers improved wear resistance and tool life compared to uncoated HSS alternatives. It carries a 2BX class of fit with H5\/H6 thread limits, delivering accurate thread geometry for reliable fastener engagement. The modified bottoming chamfer with 2-3 chamfered threads allows threading close to the bottom of blind holes. Machinists and tool-room technicians working in production or maintenance environments are the primary installers of this tap.\u003c\/p\u003e\u003cp\u003eThis tap is engineered for use in blind hole and through-hole threading operations across a range of workpiece materials including steel, stainless steel, cast iron, and non-ferrous metals — corresponding to material application codes P, M, K, and N. The Series 3940 design features 4 oil grooves and a 3xD flute-by-diameter ratio, supporting lubricant delivery to the forming zone during the tapping cycle. It is appropriate for use on CNC machining centers, drill presses, and manual tapping equipment where a tap wrench or holder accommodates the 0.1310-inch square drive size.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming (chipless) action reduces chip-related tap breakage in blind hole applications\u003c\/li\u003e\n\u003cli\u003eHigh-Speed Steel-E-CO (cobalt) construction increases hardness and heat resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003eTitanium Nitride (TiN) coating extends tool life and reduces friction during the forming cycle\u003c\/li\u003e\n\u003cli\u003eModified bottoming chamfer with 2-3 chamfered threads enables threading near the base of blind holes\u003c\/li\u003e\n\u003cli\u003e4 oil grooves support consistent lubrication delivery to the forming area\u003c\/li\u003e\n\u003cli\u003eCompatible with steel, stainless steel, cast iron, and non-ferrous metals\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for blind hole and through-hole threading of 8-32 UNC threads in steel, stainless steel, cast iron, and non-ferrous metal workpieces. Suitable for use with standard tap holders and collet chucks that accommodate a 0.1680-inch shank diameter and 0.1310-inch square drive.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps require appropriate tapping fluid or cutting oil matched to the workpiece material — do not run dry, particularly in stainless steel or cast iron. Ensure the spindle or tap wrench is properly aligned to the drilled hole before engagement to avoid cross-threading or tap breakage. For blind holes, verify the pre-drilled hole depth provides sufficient clearance beyond the required tapping depth. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when securing the tap in the holder.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 8-32\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: 2BX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H5\/H6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 2-3P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel-E-CO (Cobalt)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.130 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.5118 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.827 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1680 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.1310 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil Grooves\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 3940\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Steel, Stainless Steel, Cast Iron, Non-Ferrous Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 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: GUHRING\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9039400041660\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51730759483698,"sku":"9039400041660","price":48.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0610a6a24f96de7f85ebd75c95d194b.jpg?v=1788722371","url":"https:\/\/voomisupply.com\/products\/guhring-9039400041660-thread-forming-tap-8-32-unc","provider":"Voomi Supply","version":"1.0","type":"link"}