{"product_id":"boneham-h406jn-press-fit-headed-drill-bushing-steel","title":"Boneham H406JN Press Fit Headed Drill Bushing Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BONEHAM H406JN is a Type H press fit headed drill bushing manufactured from steel and hardened to 60 to 65 HRC for long service life in precision drilling applications. The bushing features an inside diameter of 0.368 inches with a tight tolerance of plus 0.0001 to plus 0.0005 inches, a body outside diameter of 0.625 inches, and a length under head of 0.375 inches. The head outside diameter measures 0.797 inches with a head height of 0.219 inches. This component is pressed directly into a drill jig or fixture plate and is not designed to be removed and replaced during normal use. Machinists, tool and die makers, and precision fabricators install this type of bushing to guide drill bits consistently across repeated operations.\u003c\/p\u003e\n\u003cp\u003eThe H406JN is suited for use in production drilling fixtures where a permanent, non-renewable bushing is required. It is appropriate for applications involving letter-size U drill bits. Typical installations include jig plates used in metalworking shops, assembly fixtures, and production tooling environments where hole location accuracy is critical. The press fit design eliminates movement under drill thrust loads, maintaining consistent hole placement across high-volume run production.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePress fit installation method — no locking hardware required\u003c\/li\u003e\n  \u003cli\u003eHardened steel construction at 60 to 65 HRC for wear resistance\u003c\/li\u003e\n  \u003cli\u003eInside diameter tolerance of plus 0.0001 to plus 0.0005 inches for precision drill guidance\u003c\/li\u003e\n  \u003cli\u003eHeaded design with 0.797 inch head OD seats flush against jig plate surface\u003c\/li\u003e\n  \u003cli\u003eNon-renewable design for permanent fixture installations\u003c\/li\u003e\n  \u003cli\u003eConforms to ANSI standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with letter-size U drill bits (0.368 inch diameter) in press fit drill jig and fixture applications requiring a permanent headed bushing per ANSI standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by a machinist or toolmaker using an arbor press to drive the bushing into a correctly sized and toleranced hole in the jig plate. The receiving hole in the fixture must be machined to the appropriate press fit tolerance to achieve proper retention. Do not use a hammer directly on the bushing head, as this can damage the seating surface or alter the bore geometry. Once installed, this bushing is not intended for removal or reuse.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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 (Decimal)\u003c\/strong\u003e: 0.368 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter (Letter)\u003c\/strong\u003e: U\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter Tolerance\u003c\/strong\u003e: plus 0.0001 to plus 0.0005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Outside Diameter\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Outside Diameter\u003c\/strong\u003e: 0.797 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.219 inches\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\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: H406JN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51729717592370,"sku":"H406JN","price":18.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7a3df753bfacdecf7a1650e3bb823de6_dae0a19d-ad75-49c0-a7af-50e260d25db8.jpg?v=1788708348","url":"https:\/\/voomisupply.com\/products\/boneham-h406jn-press-fit-headed-drill-bushing-steel","provider":"Voomi Supply","version":"1.0","type":"link"}