{"product_id":"collis-tool-78928-tapping-adapter-no-12-tap-no-2","title":"Collis Tool 78928 Tapping Adapter No. 12 Tap No. 2","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COLLIS TOOL 78928 is a quick-change tapping adapter designed for use with No. 12 taps in a No. 2 adapter size. It accepts a tap shank diameter of 0.22 inches and a tap square size of 0.165 inches, providing a secure, precise fit for rigid or floating tapping operations on CNC machining centers, drill presses, and tapping machines. The through-coolant design channels cutting fluid directly to the tap, reducing heat buildup and extending tap life in ferrous and non-ferrous materials. Machinists and toolroom technicians rely on this adapter to maintain accurate thread depth and consistent torque transfer in production environments.\u003c\/p\u003e\n\u003cp\u003eThis adapter is suited for production tapping applications in job shops, manufacturing cells, and maintenance departments where No. 12 thread sizes are common. The quick-change interface allows operators to swap taps at the spindle without removing the entire holder, reducing cycle time on multi-tap operations. Through-coolant compatibility makes it appropriate for blind-hole and deep-hole tapping where flood coolant alone is insufficient to clear chips and control temperature.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eQuick-change design for fast tap exchanges at the spindle without full holder removal\u003c\/li\u003e\n  \u003cli\u003eThrough-coolant capability channels fluid directly to the cutting edge for improved tap life\u003c\/li\u003e\n  \u003cli\u003e0.22-inch tap shank diameter and 0.165-inch tap square size for a precise No. 12 tap fit\u003c\/li\u003e\n  \u003cli\u003e0.32-inch projection keeps the tap close to the holder for reduced deflection\u003c\/li\u003e\n  \u003cli\u003e0.95-inch tap depth accommodates standard No. 12 tap shank engagement\u003c\/li\u003e\n  \u003cli\u003e1.88-inch flange diameter provides stable seating in the tapping head\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with No. 12 taps in No. 2 tapping adapter applications on quick-change tapping heads and compatible CNC or manual tapping systems that accept through-coolant tooling.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before mounting or removing the adapter. Verify that the coolant supply line is connected and free of blockages before engaging through-coolant flow. Confirm tap shank and square dimensions match the adapter specifications before securing the tap to avoid slippage during operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Size\u003c\/strong\u003e: No. 12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdapter Size\u003c\/strong\u003e: No. 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Shank Diameter\u003c\/strong\u003e: 0.22 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Square Size\u003c\/strong\u003e: 0.165 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 0.32 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Depth\u003c\/strong\u003e: 0.95 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlange Diameter\u003c\/strong\u003e: 1.88 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-Change\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThrough Coolant\u003c\/strong\u003e: Yes\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: COLLIS TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 78928\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COLLIS TOOL","offers":[{"title":"Default Title","offer_id":67913064087858,"sku":"78928","price":101.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cafd53b63a0e5f154f1f380e2e819422_1b3fa935-8b3d-4bb8-8140-450b872f2b7c.jpg?v=1791242172","url":"https:\/\/voomisupply.com\/products\/collis-tool-78928-tapping-adapter-no-12-tap-no-2","provider":"Voomi Supply","version":"1.0","type":"link"}