{"product_id":"walter-prototyp-6432576-spiral-point-tap-5-16-18-unc","title":"Walter-prototyp 6432576 Spiral Point Tap 5\/16-18 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe WALTER-PROTOTYP 6432576 is a spiral point tap designed for through-hole threading in a wide range of metalworking applications. Built from high-speed steel (HSS) powdered metal with a Hardlube (THL) finish, it cuts a 5\/16-18 UNC right-hand thread to a Class 2B fit. The plug chamfer makes it well suited for starting in through-holes without requiring a bottom-start profile. With an overall length of 3.5433 inches and a thread length of 0.7087 inches, this tap fits standard toolholding setups on CNC machining centers, drill presses, and tapping heads. Machinists and toolroom techs across job shops and production environments rely on this geometry for clean, consistent thread formation in ferrous and non-ferrous work materials.\u003c\/p\u003e\u003cp\u003eThis tap is intended for through-hole threading operations in steel, stainless steel, cast iron, and non-ferrous metals. The spiral point geometry pushes chips forward through the hole, preventing chip packing in production tapping runs. It is a solid choice for moderate-volume tapping where consistent thread quality and tool life are priorities. The 3-flute design provides a balance of chip clearance and cutting edge support across the listed material applications. Coolant-through is not available on this configuration, so flood or mist coolant delivery at the work surface is the standard approach.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSpiral point geometry pushes chips forward  -  optimized for through-hole threading\u003c\/li\u003e\n\u003cli\u003eHSS powdered metal construction for improved wear resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003eHardlube (THL) coating reduces friction and extends tool life in steel and stainless steel\u003c\/li\u003e\n\u003cli\u003ePlug chamfer for easy hole entry and reliable thread start\u003c\/li\u003e\n\u003cli\u003eClass 2B fit tolerance for standard fastener thread acceptance\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, 3 flutes, suitable for steel, stainless steel, cast iron, and non-ferrous metals\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for through-hole threading of 5\/16-18 UNC threads in steel, stainless steel, cast iron, and non-ferrous metal workpieces. Part of the WALTER-PROTOTYP Series EP2226302.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by machinists and toolroom technicians in CNC tapping cycles, drill press operations, or hand tapping with a tap wrench. Ensure the spindle or holder is properly aligned with the hole axis before engaging to avoid tap breakage. Apply appropriate cutting fluid or flood coolant at the work surface since this model does not support coolant-through delivery. Power down and de-energize any CNC or drilling equipment before changing tooling per standard lockout-tagout procedures.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 18\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Style\u003c\/strong\u003e: Plug\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: HSS Powdered Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Hardlube (THL)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Through-Hole Threading\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\u003eOverall Length\u003c\/strong\u003e: 3.5433 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.7087 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2362 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.6693 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Pitch\u003c\/strong\u003e: 0.0556 inches\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: EP2226302\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 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: WALTER-PROTOTYP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6432576\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":67911083753778,"sku":"6432576","price":132.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/10a8df3b815018d8b1efeeeea44153e0_5ee2d400-7308-43fd-9621-7f6e3d9dfc11.jpg?v=1791204119","url":"https:\/\/voomisupply.com\/products\/walter-prototyp-6432576-spiral-point-tap-5-16-18-unc","provider":"Voomi Supply","version":"1.0","type":"link"}