{"product_id":"osg-1670100-straight-flute-tap-12-32-unef-plug-hss","title":"Osg 1670100 Straight Flute Tap 12-32 Unef Plug Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1670100 is a straight flute plug tap designed for cutting 12-32 UNEF internal threads in a range of ferrous and non-ferrous materials. Built from high-speed steel with a bright, uncoated finish, this tap delivers consistent thread quality in production and repair applications. The plug chamfer distributes cutting load across the first few threads, making it well-suited for through-hole tapping. With 4 flutes and an H3 thread limit, the 1670100 provides controlled oversize tolerance for plated or close-tolerance threaded assemblies. A licensed machinist, toolmaker, or maintenance technician typically installs this tap in a machine or hand-tapping setup.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for tapping operations in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. The 12-32 UNEF thread form is commonly found in precision instruments, electronics hardware, and mechanical assemblies where a fine thread pitch is required in a No. 12 diameter fastener. The plug chamfer style makes this tap a practical choice for through holes and for starting threads in blind holes when full thread depth is not required at the very bottom of the bore.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e12-32 UNEF thread form with right-hand direction and H3 thread limit for controlled oversize tolerance\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer distributes cutting load across the leading threads for smooth thread entry\u003c\/li\u003e\n  \u003cli\u003e4 straight flutes for chip evacuation in a range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides durability across aluminum, cast iron, and carbon steel grades\u003c\/li\u003e\n  \u003cli\u003eBright, uncoated finish suited for general-purpose tapping without coating-specific requirements\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through design  -  compatible with standard hand or machine tapping setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel workpieces. Compatible with standard tap holders, T-handle tap wrenches, and machine tap chucks sized for a 0.22-inch shank diameter. Intended for 12-32 UNEF threaded applications per the OSG 101N series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eUse a tapping fluid or cutting oil appropriate for the workpiece material to extend tool life and improve thread finish. Ensure the workpiece is securely fixtured and the tap is properly aligned before applying cutting pressure. When tapping blind holes, back the tap out periodically to clear chips from the flutes. Always use the correct drill size for a 12-32 UNEF thread to avoid tap breakage or out-of-tolerance threads.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 12-32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNEF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.374 inches (2-3\/8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.9375 inches (15\/16 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.22 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.165 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.28125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.11 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: 101N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.022 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: 1670100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51739818721586,"sku":"1670100","price":22.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b7c282665c67f835b718d53cb239b7cc.jpg?v=1788819229","url":"https:\/\/voomisupply.com\/products\/osg-1670100-straight-flute-tap-12-32-unef-plug-hss","provider":"Voomi Supply","version":"1.0","type":"link"}