{"product_id":"boneham-h484io-press-fit-headed-drill-bushing-steel","title":"Boneham H484IO Press Fit Headed Drill Bushing Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BONEHAM H484IO is a Type H press fit headed drill bushing machined from steel for use in drill jigs and fixture plates. It features an inside diameter of 0.316 inches with a tolerance of +0.0001 to +0.0005 inches, a body outside diameter of 0.75 inches, and a head outside diameter of 59\/64 inches. The bushing presses permanently into a jig plate to guide drill bits, reamers, or other cutting tools with repeatable positional accuracy. Machinists, toolmakers, and fixture builders install this type of bushing when a non-renewable, fixed-position guide is required for production or prototype drilling operations.\u003c\/p\u003e\n\u003cp\u003eThis bushing is suited for use in drill jig applications across general machining, metalworking, and manufacturing environments. The headed design seats flush against the top surface of the jig plate, controlling the depth the bushing sits relative to the workpiece. With a length under head of 0.25 inches and a head height of 7\/32 inches, it fits standard jig plate thicknesses used in light to medium production work. It is not counterbored and is not designed to be renewable or interchangeable once installed.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eType H press fit installation — no locking pins or fasteners required\u003c\/li\u003e\n  \u003cli\u003eInside diameter of 0.316 inches with tight tolerance of +0.0001 to +0.0005 inches for accurate tool guidance\u003c\/li\u003e\n  \u003cli\u003eHead outside diameter of 59\/64 inches seats against the jig plate face\u003c\/li\u003e\n  \u003cli\u003eSteel construction provides durability in repeated drilling cycles\u003c\/li\u003e\n  \u003cli\u003eNon-renewable design — permanent installation once pressed into the jig plate\u003c\/li\u003e\n  \u003cli\u003eLength under head of 0.25 inches suits standard jig plate thicknesses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a permanent press fit replacement or new-installation drill bushing for Type H headed bushing applications in drill jigs and fixture plates requiring a 0.316 inch inside diameter and 0.75 inch body outside diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by toolmakers or machinists using an arbor press or hydraulic press to seat the bushing into a properly reamed jig plate hole. The mating hole in the jig plate must be machined to the appropriate press fit tolerance for the 0.75 inch body outside diameter before installation. Once pressed in, the bushing is not intended to be removed or replaced. Always verify inside diameter clearance for the intended tool shank before pressing the bushing into the plate.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter (Decimal)\u003c\/strong\u003e: 0.316 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter Letter Code\u003c\/strong\u003e: O\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: 0.75 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: 0.25 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\u003eBushing Type\u003c\/strong\u003e: H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Method\u003c\/strong\u003e: Press Fit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Style\u003c\/strong\u003e: Headed\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\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31171603\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: H484IO\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51736124031282,"sku":"H484IO","price":21.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f245cd260d9f763a10bce5faf9bb602b.jpg?v=1788776019","url":"https:\/\/voomisupply.com\/products\/boneham-h484io-press-fit-headed-drill-bushing-steel","provider":"Voomi Supply","version":"1.0","type":"link"}