{"product_id":"boneham-h648mr-press-fit-headed-drill-bushing-type-h","title":"Boneham H648MR Press Fit Headed Drill Bushing Type H","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe BONEHAM H648MR is a Type H press fit headed drill bushing designed to guide cutting tools accurately in jig and fixture applications. Machined from steel and hardened to 60 to 65 HRC, it delivers consistent bore alignment during drilling, reaming, and similar operations. The bushing features an 11\/16-inch (0.6875 inches) inside diameter with a tight tolerance of +0.0001 to +0.0005 inches, a 1-inch body outside diameter, and a length under the head of 1\/2 inch. The integral head seats flush against the jig plate, preventing axial movement under tool load. Installation is permanent — this bushing is not renewable once pressed into place.\u003c\/p\u003e\u003cp\u003eThe H648MR is suited for production drilling jigs, tooling fixtures, and machine shop setups where repeatable hole location is required. Its press fit installation makes it appropriate for applications where the bushing position will not need to be changed between runs. Typical users include toolmakers, machinists, and fixture builders working in job shops or manufacturing environments. The ANSI-compliant design allows it to fit into standard jig plate layouts that specify Type H headed press fit bushings.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSteel construction hardened to 60 to 65 HRC for long service life in high-cycle drilling applications\u003c\/li\u003e\n\u003cli\u003eInside diameter tolerance of +0.0001 to +0.0005 inches ensures precise tool guidance\u003c\/li\u003e\n\u003cli\u003eIntegral head design seats against jig plate surface, resisting axial push-through\u003c\/li\u003e\n\u003cli\u003ePress fit installation for permanent, non-renewable placement in the fixture\u003c\/li\u003e\n\u003cli\u003eMeets ANSI standards for Type H headed drill bushings\u003c\/li\u003e\n\u003cli\u003eNot counterbored — flat seating surface under the head\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-install component for standard ANSI Type H headed press fit drill bushing applications in machining jigs and fixtures.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003ePress fit bushings are installed by a toolmaker or machinist using an arbor press or hydraulic press — never drive with a hammer directly on the bushing bore or head face. The receiving jig plate bore must be machined to the appropriate interference fit tolerance per ANSI standards before installation. Once pressed in, the bushing is permanent and cannot be removed without damaging the fixture plate. Verify inside diameter clearance with the intended cutting tool before pressing the bushing into place.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushing Type\u003c\/strong\u003e: Type H Press Fit Headed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 11\/16 inches (0.6875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter Tolerance\u003c\/strong\u003e: +0.0001 to +0.0005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Outside Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Outside Diameter\u003c\/strong\u003e: 1-15\/64 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 5\/16 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 60 to 65 HRC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRenewable\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounterbored\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: BONEHAM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: H648MR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51753930654002,"sku":"H648MR","price":22.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7a3df753bfacdecf7a1650e3bb823de6_7c7dd131-1b3f-4055-96f6-ff6da7f7f122.jpg?v=1788942137","url":"https:\/\/voomisupply.com\/products\/boneham-h648mr-press-fit-headed-drill-bushing-type-h","provider":"Voomi Supply","version":"1.0","type":"link"}