{"product_id":"walter-prototyp-7427641-thread-forming-tap-3-8-16-unc-tin","title":"Walter-prototyp 7427641 Thread Forming Tap 3\/8-16 Unc Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WALTER-PROTOTYP 7427641 is a thread forming tap designed for cutting 3\/8-16 UNC internal threads with a 2BX class of fit. Built from High-Speed Steel-E (HSS-E) and finished with a Titanium Nitride (TiN) coating, this tap resists wear and handles elevated cutting temperatures encountered in production environments. It has a semi-bottoming (modified bottoming) chamfer with 2-3 chamfered threads, allowing it to thread close to the bottom of a blind hole without sacrificing engagement on through-hole work. Overall length is 3.937 inches (100 mm), with a thread length of 0.787 inches (20 mm) and a tapping depth of 1.535 inches (39 mm). It belongs to the TC410 Advance series and features 5 oil grooves to support lubrication during the forming process.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for blind hole and through-hole threading applications across a range of workpiece materials, including steels (P), stainless steels (M), cast irons (K), non-ferrous metals (N), and heat-resistant alloys (S) as indicated by the material application codes. It is appropriate for use in machining centers, CNC lathes, and manual tapping setups where a right-hand 3\/8-16 UNC thread is required. The 3.5xD flute-to-diameter ratio and the TC410 Advance series design make it a practical choice for medium-production and job-shop environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-16 UNC thread, right-hand, 2BX class of fit for standard tolerance threading\u003c\/li\u003e\n  \u003cli\u003eSemi-bottoming chamfer (2-3 chamfered threads) for near-bottom blind hole access\u003c\/li\u003e\n  \u003cli\u003eHigh-Speed Steel-E construction with Titanium Nitride coating for wear resistance\u003c\/li\u003e\n  \u003cli\u003e5 oil grooves promote consistent lubrication and chip-free thread forming\u003c\/li\u003e\n  \u003cli\u003eCompatible with blind hole and through-hole threading applications\u003c\/li\u003e\n  \u003cli\u003eMaterial grade WY80AD, rated for steel, stainless, cast iron, non-ferrous, and heat-resistant alloy workpieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for use on material application codes P (steels), M (stainless steels), K (cast irons), N (non-ferrous metals), and S (heat-resistant alloys). Designed for blind hole and through-hole threading in standard 3\/8-16 UNC applications per the TC410 Advance series specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or tooling technicians in shop environments. Ensure the spindle, fixture, and workpiece are properly secured before engaging the tap. Use an appropriate tapping fluid or cutting oil matched to the workpiece material to maximize tool life and thread quality. Follow machine tool manufacturer torque and speed recommendations for the workpiece material and tap diameter; do not exceed the rated tapping depth of 1.535 inches.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16 UNC\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 Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Modified Bottoming (Semi-Bottoming)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 2-3P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.937 inches (100 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.787 inches (20 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.535 inches (39 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.394 inches (10 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.315 inches (8 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOil Grooves\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3.5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel-E (HSS-E)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application Codes\u003c\/strong\u003e: P, M, K, N, S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: WY80AD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: TC410 Advance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading, Through-Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.104 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 4.53 x 0.59 x 0.51 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 7427641\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":67906746122546,"sku":"7427641","price":167.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0bc28d63690a11b5e13279517549e08f_80c6f201-ba2f-4dcb-9cad-d8698460c941.jpg?v=1791171061","url":"https:\/\/voomisupply.com\/products\/walter-prototyp-7427641-thread-forming-tap-3-8-16-unc-tin","provider":"Voomi Supply","version":"1.0","type":"link"}