{"product_id":"osg-1730608-spiral-point-tap-1-4-20-unc-ticn-hss","title":"Osg 1730608 Spiral Point Tap 1\/4-20 Unc Ticn Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1730608 is a spiral point tap designed to cut 1\/4-20 UNC internal threads in through-hole applications. Built from Vanadium High Speed Steel (HSS-E) and coated with Titanium Carbonitride (TiCN), it delivers enhanced hardness and lubricity compared to standard uncoated HSS taps. The spiral point geometry pushes chips forward ahead of the cutting action, making it well suited for through-hole tapping where chip evacuation is critical. This tap carries a 3B class of fit designation with an H3 thread limit, producing threads within standard tolerance for general mechanical assembly. It is installed by machinists and tool-and-die professionals using a tap handle, CNC tapping head, or drill press tapping attachment.\u003c\/p\u003e\n\u003cp\u003eThe 1730608 is appropriate for tapping through holes in hardened steel, low-carbon steel, medium-carbon steel, and stainless steel. Its plug chamfer (3-5 thread lead) makes it a standard first-choice tap for production and maintenance tapping where the tap can pass fully through the workpiece. The TiCN coating reduces built-up edge and extends tool life when working in abrasive or work-hardening materials such as stainless steel. Right-hand thread direction matches standard 1\/4-20 UNC fastener orientation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSpiral point geometry pushes chips forward, optimized for through-hole tapping\u003c\/li\u003e\n  \u003cli\u003eTiCN coating increases surface hardness and reduces friction for extended tool life\u003c\/li\u003e\n  \u003cli\u003eVanadium HSS-E base material provides toughness in steel and stainless steel applications\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit and 3B class of fit for standard-tolerance general assembly threads\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer with 3-flute design balances cutting load across the tap body\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through requirement — compatible with flood coolant or cutting oil applied externally\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for cutting 1\/4-20 UNC right-hand internal threads in hardened steel, low-carbon steel, medium-carbon steel, and stainless steel workpieces. Suitable for use in manual tap handles, tapping heads, and CNC machining centers equipped for rigid or floating tap cycles.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed by qualified machinists or tool-and-die technicians. Before tapping, verify the drilled hole is sized to the correct tap drill diameter for 1\/4-20 UNC threads and that the workpiece is securely fixtured. Apply a suitable cutting fluid or tapping compound rated for the workpiece material — this is especially important when tapping stainless steel to prevent galling. Do not force the tap if resistance increases suddenly; back off to break chips and re-apply cutting fluid before continuing.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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: TiCN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.62 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupted Thread\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: 0.031 pounds\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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1730608\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728669737266,"sku":"1730608","price":40.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/db27b25e568bc358bc45e7339615d2aa.jpg?v=1788694706","url":"https:\/\/voomisupply.com\/products\/osg-1730608-spiral-point-tap-1-4-20-unc-ticn-hss","provider":"Voomi Supply","version":"1.0","type":"link"}