{"product_id":"micro-100-th-86-boring-grooving-bar-holder-0-25-id","title":"Micro 100 TH-86 Boring Grooving Bar Holder 0.25 Id","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MICRO 100 TH-86 is a boring and grooving bar holder designed to secure small-diameter boring and grooving bars in CNC lathes and manual turning centers. The holder accepts bars with a 0.25 inch inside diameter and features a 0.5 inch outside diameter body with a 0.625 inch head diameter, keeping the tool rigidly positioned during internal grooving and boring operations. Overall length is 2.75 inches. Weighing 0.116 pounds, the TH-86 is a compact, single-piece holder suited for tight-clearance applications where precise bar positioning is critical.\u003c\/p\u003e\n\u003cp\u003eThe TH-86 is used in machine shop environments for internal diameter grooving and boring on small workpieces. It is typically installed on CNC turning centers, manual lathes, and Swiss-style machines where 0.25 inch shank boring bars are in regular use. The TH Series holder design is well suited for production turning applications where repeatable tool positioning is required. Machinists and toolroom technicians performing ID grooving, threading, or profiling operations on small-bore parts will find this holder appropriate for those setups.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAccepts 0.25 inch inside diameter boring and grooving bars\u003c\/li\u003e\n  \u003cli\u003e0.5 inch outside diameter body for standard toolpost and turret mounting\u003c\/li\u003e\n  \u003cli\u003e0.625 inch head diameter provides positive bar retention\u003c\/li\u003e\n  \u003cli\u003e2.75 inch overall length suits compact lathe setups\u003c\/li\u003e\n  \u003cli\u003ePart of the MICRO 100 TH Series holder line\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.116 pounds for easy handling and tool changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style holder for 0.25 inch shank boring and grooving bars used in CNC and manual turning applications requiring a 0.5 inch OD tool holder body.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before mounting or removing the holder from the turret or toolpost. Verify that the boring bar shank is fully seated and all clamping screws are torqued per the machine tool manufacturer's specifications. Confirm tool overhang and runout before initiating any cutting operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutside Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Diameter\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.116 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: TH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112809\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: MICRO 100\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: TH-86\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MICRO 100","offers":[{"title":"Default Title","offer_id":52046613676338,"sku":"TH-86","price":126.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cc33b10effc23579972a0a20983a316c_02e34263-ae87-4236-9e82-6f644ed657cb.jpg?v=1790031359","url":"https:\/\/voomisupply.com\/products\/micro-100-th-86-boring-grooving-bar-holder-0-25-id","provider":"Voomi Supply","version":"1.0","type":"link"}