{"product_id":"boneham-h3212u-press-fit-headed-drill-bushing","title":"Boneham H3212U Press Fit Headed Drill Bushing","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BONEHAM H3212U is a Type H press fit headed drill bushing designed to guide cutting tools with precision in jig and fixture applications. It features an inside diameter of 0.277 inches (Letter size J) with a tight tolerance of +0.0001 to +0.0005 inches, a body outside diameter of 0.5 inches, and a length under head of 0.75 inches. Constructed from steel, this bushing is pressed permanently into a drill jig plate and does not rotate or lift out during use. It is installed by toolmakers, machinists, and fixture builders working in production drilling and reaming setups.\u003c\/p\u003e\n\u003cp\u003eThe H3212U is suited for permanent installation in drill jigs used in metalworking and manufacturing environments where consistent hole location is critical across repeated operations. The headed design seats flush against the jig plate surface, providing a positive stop that controls tool depth entry. This bushing is appropriate for light to medium production runs where a non-renewable, fixed bushing meets the tooling requirement. It is not intended to be field-replaced once pressed into the jig body.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePress fit installation — no liner bushing required, permanent seating in jig plate\u003c\/li\u003e\n  \u003cli\u003eInside diameter tolerance of +0.0001 to +0.0005 inches for tight tool guidance\u003c\/li\u003e\n  \u003cli\u003eHead outside diameter of 0.609 inches (39\/64) with a head height of 0.219 inches (7\/32)\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in repeated drilling cycles\u003c\/li\u003e\n  \u003cli\u003eNon-renewable design — intended as a fixed, permanent bushing\u003c\/li\u003e\n  \u003cli\u003eCounterbored: No — standard flat-seat headed configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in standard drill jig plates accepting a 0.5-inch OD press fit headed bushing per Type H bushing industry standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePress fit bushings are installed by toolmakers or machinists using an arbor press or hydraulic press. The jig plate bore must be machined to the correct interference fit tolerance before pressing the bushing in place. Once installed, the bushing is not intended for removal or reuse. Always ensure the press fit bore in the plate is clean and free of burrs before installation to avoid damage to the bushing or jig plate.\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: 0.277 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter (Letter)\u003c\/strong\u003e: J\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: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Outside Diameter\u003c\/strong\u003e: 0.609 inches (39\/64)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.219 inches (7\/32)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead or Headless\u003c\/strong\u003e: Head\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\u003eInstallation Method\u003c\/strong\u003e: Press Fit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: H3212U\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51727300559154,"sku":"H3212U","price":24.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b617461c6c05368cdcf2b33f32fca5ff.jpg?v=1788676051","url":"https:\/\/voomisupply.com\/products\/boneham-h3212u-press-fit-headed-drill-bushing","provider":"Voomi Supply","version":"1.0","type":"link"}