{"product_id":"osg-1732301-spiral-flute-tap-8-32-unc-modified-bottoming","title":"Osg 1732301 Spiral Flute Tap 8-32 Unc Modified Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1732301 is a spiral flute tap designed to cut 8-32 UNC internal threads in ferrous and stainless steel workpieces. The 45-degree right-hand helix flute geometry evacuates chips up and out of the hole during the tapping operation, making it well-suited for blind-hole applications where chip packing is a concern. Ground from vanadium high-speed steel and finished with a steam oxide coating, this tap delivers improved lubricity and corrosion resistance during cutting. The modified bottoming chamfer allows threading close to the bottom of a blind hole. It carries a 2B class of fit and an H3 thread limit, producing threads appropriate for standard fastener assembly tolerances. Overall length is 2.125 inches.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for use in machine tapping operations on stainless steel, high-carbon steel, medium-carbon steel, and low-carbon steel. The Series 303 designation places it within OSG's catalog line of general-purpose spiral flute taps. It is commonly used in CNC machining centers, turret lathes, and dedicated tapping machines where rigid or floating tap holders feed the tool at a controlled rate. Machinists, toolmakers, and production operators working in job shops or manufacturing facilities are the primary users of this tool.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e45-degree right-hand helix flute design evacuates chips upward, reducing packing in blind holes\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer for threading near the bottom of blind-hole features\u003c\/li\u003e\n  \u003cli\u003eVanadium high-speed steel construction for improved wear resistance over standard HSS\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating reduces friction and improves chip flow during cutting\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit and 2B class of fit for standard tolerance internal threads\u003c\/li\u003e\n  \u003cli\u003eThree flutes with right-hand spiral for use in right-hand tapping operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for machine tapping of 8-32 UNC threads in stainless steel, high-carbon steel, medium-carbon steel, and low-carbon steel. Compatible with standard tap holders and tapping attachments sized for the 0.168-inch shank diameter. Coolant-through application is not supported by this tool.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed and driven by a licensed machinist or toolmaker using a rigid or floating tap holder in a CNC machine, turret lathe, or dedicated tapping unit. Always ensure the spindle speed and feed rate match the manufacturer recommendations for the workpiece material before starting the cycle. Secure the workpiece fully before tapping, and confirm the drilled hole is the correct tap drill diameter for 8-32 UNC. Do not attempt to hand-tap with this tool in applications that require the controlled feed of a machine setup.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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\u003eThreads per Inch\u003c\/strong\u003e: 32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 45 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Vanadium High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.252 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.168 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.752 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.250 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.131 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Stainless Steel, High-Carbon Steel, Low-Carbon Steel, Medium-Carbon Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 303\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.014 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: 1732301\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51744278118706,"sku":"1732301","price":47.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7427607f6190d0798126bf794572d4e8.jpg?v=1788855496","url":"https:\/\/voomisupply.com\/products\/osg-1732301-spiral-flute-tap-8-32-unc-modified-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}