{"product_id":"osg-1731105-spiral-point-tap-3-8-24-unf-tin-hss","title":"Osg 1731105 Spiral Point Tap 3\/8-24 Unf Tin Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1731105 is a spiral point tap designed for cutting internal threads in through-hole applications. It produces a 3\/8-24 UNF right-hand thread and uses a plug chamfer to guide entry and distribute cutting load across the leading threads. The tap is manufactured from vanadium high-speed steel (HSS-E) for improved toughness and wear resistance at elevated cutting temperatures. A titanium nitride (TiN) coating reduces friction and extends tool life across repeated use cycles. With 3 flutes and an H3 thread limit, it is suited for consistent, close-tolerance production threading. Licensed machinists and tool-and-die professionals are the primary users of this tap.\u003c\/p\u003e\u003cp\u003eThis tap is built for threading through-holes in hardened steel, low-carbon steel, medium-carbon steel, and stainless steel. The spiral point design pushes chips forward ahead of the tap, making it the correct choice for through-hole work rather than blind-hole applications. It fits standard tap handles and CNC tapping heads. The 3B class of fit specifies a standard tolerance range appropriate for general-purpose fastener assemblies. Series 300 designation indicates OSG standard production tooling.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e3\/8-24 UNF thread form, right-hand cut, H3 thread limit for close tolerance control\u003c\/li\u003e\n\u003cli\u003ePlug chamfer provides guided entry and distributes cutting forces over multiple lead threads\u003c\/li\u003e\n\u003cli\u003eVanadium high-speed steel (HSS-E) construction for improved heat and wear resistance\u003c\/li\u003e\n\u003cli\u003eTiN coating reduces cutting friction and extends tap service life\u003c\/li\u003e\n\u003cli\u003eSpiral point geometry pushes chips forward, optimized for through-hole threading\u003c\/li\u003e\n\u003cli\u003e3B class of fit meets standard assembly tolerance requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in hardened steel, low-carbon steel, medium-carbon steel, and stainless steel workpieces requiring a 3\/8-24 UNF through-hole thread. Compatible with standard tap handles, tapping attachments, and CNC rigid tapping setups accepting a 0.381-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by machinists and tool-and-die technicians using manual tap handles or machine tapping setups. The workpiece must be securely fixtured and the pilot hole drilled to the correct tap drill diameter for a 3\/8-24 UNF thread before tapping begins. Apply cutting fluid appropriate for the workpiece material to reduce heat buildup and extend tap life. Do not force the tap if resistance is encountered; back off to clear chips and re-engage to avoid breakage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-24 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\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: Vanadium High-Speed Steel (HSS-E)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.937 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.381 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Hardened Steel, Low-Carbon Steel, Medium-Carbon Steel, Stainless Steel\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: 300\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1731105\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727895003442,"sku":"1731105","price":54.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ca6937737b7164a172458b3229dd1d5b.jpg?v=1788684139","url":"https:\/\/voomisupply.com\/products\/osg-1731105-spiral-point-tap-3-8-24-unf-tin-hss","provider":"Voomi Supply","version":"1.0","type":"link"}