{"product_id":"collis-tool-78917-tapping-adapter-3-8-inch-through-coolant","title":"Collis Tool 78917 Tapping Adapter 3\/8 Inch Through Coolant","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COLLIS TOOL 78917 is a tapping adapter designed for use with 3\/8 inch taps in quick-change tooling systems. It accepts a tap with a 0.381-inch shank diameter and a 0.286-inch square size, providing a secure, positive drive connection. The adapter supports through-coolant delivery, directing coolant fluid directly through the tool to the cutting zone for improved chip evacuation and tap life. It is sized as a Number 1 adapter and is installed by machinists and toolroom technicians on CNC machining centers, tapping machines, and manual turret lathes.\u003c\/p\u003e\n\u003cp\u003eThis adapter is suited for production tapping applications in job shops, manufacturing facilities, and toolrooms where quick-change tap holders are used. The through-coolant feature makes it well suited for deeper tapping operations or materials that generate heat and require active cooling at the cutting edge. The compact projection of 0.28 inches and a tap depth capacity of 1.05 inches allow it to fit into tight setups without sacrificing reach. A flange diameter of 1.18 inches provides the seating surface for secure engagement with compatible quick-change toolholding systems.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAccepts 3\/8 inch tap with 0.381-inch shank diameter and 0.286-inch square size\u003c\/li\u003e\n  \u003cli\u003eThrough-coolant design channels coolant directly to the tap cutting zone\u003c\/li\u003e\n  \u003cli\u003eQuick-change compatible for fast tap swaps without removing the holder body\u003c\/li\u003e\n  \u003cli\u003eTap depth capacity of 1.05 inches for adequate reach in standard tapping applications\u003c\/li\u003e\n  \u003cli\u003eFlange diameter of 1.18 inches for stable seating and drive engagement\u003c\/li\u003e\n  \u003cli\u003eCompact 0.28-inch projection minimizes interference in close-clearance setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a Number 1 size quick-change tapping adapter for use with 3\/8 inch taps in compatible quick-change tap holder systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or toolroom technicians. Always de-energize and lock out the machine before changing tooling. Verify that the tap shank diameter and square size match the adapter specifications before seating the tap. Confirm coolant passages are clear and free of obstructions before running through-coolant at operating pressure.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Size\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Adapter Size\u003c\/strong\u003e: Number 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Shank Diameter\u003c\/strong\u003e: 0.381 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Square Size\u003c\/strong\u003e: 0.286 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 0.28 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTap Depth Capacity\u003c\/strong\u003e: 1.05 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlange Diameter\u003c\/strong\u003e: 1.18 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThrough Coolant\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuick-Change\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 78917\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COLLIS TOOL","offers":[{"title":"Default Title","offer_id":67906711650610,"sku":"78917","price":70.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9da09bb8c4550df7938c907f70a6c0cb.jpg?v=1791170725","url":"https:\/\/voomisupply.com\/products\/collis-tool-78917-tapping-adapter-3-8-inch-through-coolant","provider":"Voomi Supply","version":"1.0","type":"link"}