{"product_id":"boneham-h485jb-press-fit-headed-drill-bushing-steel","title":"Boneham H485JB Press Fit Headed Drill Bushing Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BONEHAM H485JB is a Type H press fit headed drill bushing manufactured from steel, designed to guide cutting tools with precision during drilling operations. It installs by press fit into a jig plate or fixture body and stays fixed for the life of the jig, making it a permanent bushing solution. The inside diameter measures 11\/32 inches with a tight tolerance of +0.0001 to +0.0005 inches, ensuring consistent drill guidance. The body outside diameter is 3\/4 inches and the length under the head is 5\/16 inches. Tooling engineers, machinist, and fixture builders install this type of bushing during jig fabrication or maintenance.\u003c\/p\u003e\n\u003cp\u003eThe H485JB is suited for production drilling fixtures and jig plates in machine shops, fabrication facilities, and manufacturing environments where a non-renewable, permanently seated bushing is required. The headed design seats flush against the top face of the jig plate, preventing the bushing from being pushed through under axial drilling loads. This makes it appropriate for through-hole jig applications where the head acts as a positive stop during tool entry.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePress fit installation method — permanently seated into jig plate bore without additional fasteners\u003c\/li\u003e\n  \u003cli\u003eInside diameter of 11\/32 inches with tolerance of +0.0001 to +0.0005 inches for precise drill guidance\u003c\/li\u003e\n  \u003cli\u003eBody outside diameter of 3\/4 inches and head outside diameter of 59\/64 inches\u003c\/li\u003e\n  \u003cli\u003eLength under head of 5\/16 inches with head height of 7\/32 inches\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in repeated drilling applications\u003c\/li\u003e\n  \u003cli\u003eNon-renewable design — intended as a permanent bushing, not a field-replaceable liner\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style permanent press fit headed drill bushing for use in standard jig plates and drill fixtures requiring a Type H bushing configuration.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePress fit bushings are installed by a machinist or tooling technician using an arbor press or hydraulic press — never drive them in with a hammer, as this can damage the bore or distort the bushing. The receiving bore in the jig plate must be machined to the correct press fit tolerance to achieve proper retention. Once installed, the H485JB is not intended to be removed or replaced. Ensure the fixture is secured and clear of personnel before beginning pressing operations.\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 (Headed Press Fit)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Method\u003c\/strong\u003e: Press Fit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 11\/32 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: 3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Outside Diameter\u003c\/strong\u003e: 59\/64 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 7\/32 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRenewable Bushing\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbored\u003c\/strong\u003e: No\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: H485JB\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51728497443122,"sku":"H485JB","price":19.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b617461c6c05368cdcf2b33f32fca5ff_d66c3431-afbb-4e5f-8540-b15d03d328f4.jpg?v=1788692170","url":"https:\/\/voomisupply.com\/products\/boneham-h485jb-press-fit-headed-drill-bushing-steel","provider":"Voomi Supply","version":"1.0","type":"link"}