{"product_id":"boneham-p4812jq-press-fit-headless-drill-bushing","title":"Boneham P4812JQ Press Fit Headless Drill Bushing","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe BONEHAM P4812JQ is a press fit headless drill bushing designed to guide drill bits and cutting tools with precision in metalworking and fabrication applications. This bushing features a 0.375 inch inside diameter with a tight tolerance of +0.0001 to +0.0005 inches, ensuring consistent hole location accuracy. The body outside diameter measures 0.75 inches and overall length is 0.75 inches. Manufactured from steel hardened to 60 to 65 HRC, the P4812JQ resists wear under repeated drilling cycles. It conforms to ANSI standards and is non-renewable, meaning it is pressed permanently into the jig plate.\u003c\/p\u003e\u003cp\u003eThis drill bushing is used in drill jigs and fixture plates across machine shops, tool rooms, and production environments. The headless profile allows for flush installation where a collar or flange would interfere with workpiece clearance or jig plate geometry. Industry code P identifies the bushing series, which is a standard designation for press fit headless types used by toolmakers and machinists when building or refurbishing drill fixtures. It is suited for production drilling operations where positional accuracy and bushing rigidity are critical.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePress fit installation method for permanent, rigid seating in jig plates\u003c\/li\u003e\n\u003cli\u003eHeadless design allows flush mounting where flanged bushings would not fit\u003c\/li\u003e\n\u003cli\u003eInside diameter tolerance of +0.0001 to +0.0005 inches for precise drill guidance\u003c\/li\u003e\n\u003cli\u003eSteel construction hardened to 60 to 65 HRC for extended wear life\u003c\/li\u003e\n\u003cli\u003eANSI-compliant dimensions for interchangeability with standard tooling\u003c\/li\u003e\n\u003cli\u003eNon-renewable design suited to permanent fixture applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an ANSI-standard press fit headless drill bushing for use in drill jigs and fixture plates requiring a P-series bushing with a 0.375 inch inside diameter and 0.75 inch outside diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or toolmakers using an arbor press or hydraulic press to seat the bushing flush into a precision-bored jig plate hole. The mating hole in the jig plate must be bored to the correct interference fit tolerance to achieve proper retention. Do not hammer the bushing in without a proper driver to avoid distorting the inside diameter. Once pressed in, the bushing is not intended to be removed or replaced.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.375 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: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Bushing Length\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBushing Industry Code\u003c\/strong\u003e: P\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: Headless\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: P4812JQ\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51743902794034,"sku":"P4812JQ","price":17.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/772b15bcdae08b51210f0eebedf78b00_c6f093b5-a3aa-44df-ad59-65b1e8243c94.jpg?v=1788851092","url":"https:\/\/voomisupply.com\/products\/boneham-p4812jq-press-fit-headless-drill-bushing","provider":"Voomi Supply","version":"1.0","type":"link"}