{"product_id":"boneham-h3212im-press-fit-headed-drill-bushing-steel-type-h","title":"Boneham H3212IM Press Fit Headed Drill Bushing Steel Type H","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe BONEHAM H3212IM is a Type H press fit headed drill bushing manufactured from hardened steel for use in jig and fixture applications. It features a 5\/16 inch (0.3125 inch) inside diameter with a close tolerance bore of +0.0001 to +0.0005 inches, a 1\/2 inch body outside diameter, and a 3\/4 inch length under the head. The head outside diameter measures 39\/64 inch with a 7\/32 inch head height. Hardness is rated at 60 to 65 HRC, making it suitable for high-wear drilling operations where dimensional accuracy and repeatability are required. Machinists, toolmakers, and fixture builders typically install this bushing.\u003c\/p\u003e\u003cp\u003eThis bushing is used in drill jigs and machining fixtures where a permanent, non-renewable guide bushing is needed. The headed design seats against the jig plate surface to control drill depth and resist axial push-through forces. It is well suited for production environments in metalworking, fabrication, and precision machining shops where a pressed-in bushing is the correct installation method for the fixture design.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePress fit installation — no retaining ring or lock required once seated\u003c\/li\u003e\n\u003cli\u003eHeaded (Type H) design resists axial displacement during drilling\u003c\/li\u003e\n\u003cli\u003eInside diameter tolerance of +0.0001 to +0.0005 inches for precise drill guidance\u003c\/li\u003e\n\u003cli\u003eHardness of 60 to 65 HRC for long service life under repeated drill contact\u003c\/li\u003e\n\u003cli\u003eNon-renewable design for permanent fixture applications\u003c\/li\u003e\n\u003cli\u003eMeets ANSI standards for drill bushing dimensions and tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an ANSI-standard Type H press fit headed drill bushing for use in drill jigs and machining fixtures requiring a 5\/16 inch bore and 1\/2 inch body outside diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by toolmakers or machinists using an arbor press or hydraulic press to seat the bushing flush into a prepared jig plate bore. The receiving hole in the jig plate must be machined to the correct press fit tolerance to ensure secure retention. Do not drive the bushing with a hammer directly on the head, as this can damage the bore or cause misalignment. Once pressed in, this bushing is not designed for removal or reuse.\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: 5\/16 inches (0.3125 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\/2 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Outside Diameter\u003c\/strong\u003e: 39\/64 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 7\/32 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: H3212IM\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51734977478962,"sku":"H3212IM","price":20.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7a3df753bfacdecf7a1650e3bb823de6_7eefe692-08d8-4631-8b3c-a89347b86b18.jpg?v=1788768813","url":"https:\/\/voomisupply.com\/products\/boneham-h3212im-press-fit-headed-drill-bushing-steel-type-h","provider":"Voomi Supply","version":"1.0","type":"link"}