{"product_id":"boneham-l4812lk-headless-l-drill-bushing-liner-1-2-in","title":"Boneham L4812LK Headless L Drill Bushing Liner 1\/2 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BONEHAM L4812LK is a headless L-style drill bushing liner designed to guide cutting tools with precision in fixed jig and fixture applications. It features a 1\/2-inch inside diameter, a 3\/4-inch body outside diameter, and a 3\/4-inch liner length. Manufactured from alloy steel hardened to 60-65 HRC, this liner resists wear under repeated drilling, reaming, and boring cycles. Installation is by press fit, seating the liner securely into a jig plate or renewable bushing without the need for a head flange. Licensed HVAC, machining, and tooling professionals select this component for close-tolerance work where dimensional stability is critical.\u003c\/p\u003e\n\u003cp\u003eThe L4812LK fits standard jig and fixture setups in production and maintenance environments. It is well suited for applications requiring a flush, head-free installation profile where clearance above the workpiece surface is limited. The press fit design locks the liner in place within a conforming bore, making it appropriate for both dedicated jig plates and liner-style renewable bushing systems. Typical users include tool-and-die shops, machine shops, and industrial maintenance facilities performing repetitive hole-location work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHeadless L-style liner profile allows flush installation with no protruding flange\u003c\/li\u003e\n  \u003cli\u003e1\/2-inch inside diameter guides standard drill and reamer shanks\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction hardened to 60-65 HRC for extended wear life\u003c\/li\u003e\n  \u003cli\u003ePress fit installation seats securely without fasteners or adhesive\u003c\/li\u003e\n  \u003cli\u003e3\/4-inch liner length provides sufficient bearing surface for accurate tool guidance\u003c\/li\u003e\n  \u003cli\u003eCompact 3\/4-inch body outside diameter fits standard liner bores\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or original-installation liner for standard L-series drill bushing jig and fixture systems using a 1\/2-inch inside diameter headless press fit bushing.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePress fit installation requires a properly sized receiver bore to achieve correct interference fit; consult published tolerance tables for L-series liners before machining the mating bore. Use an arbor press or similar controlled-force tooling to seat the liner squarely — avoid hammer strikes that may distort the bore geometry. Ensure all machinery is de-energized and work is secured before pressing components into fixtures. Verify inside diameter and liner length against job requirements before installation, as removal of a pressed liner may damage the host plate.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.5 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\u003eLiner Length\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiner Industry Code\u003c\/strong\u003e: L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Method\u003c\/strong\u003e: Press Fit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 60-65 HRC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 pounds\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: L4812LK\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51752063271218,"sku":"L4812LK","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/772b15bcdae08b51210f0eebedf78b00_a23af0f3-dfc2-4bb4-94cd-79ebbfb4d6f8.jpg?v=1788925596","url":"https:\/\/voomisupply.com\/products\/boneham-l4812lk-headless-l-drill-bushing-liner-1-2-in","provider":"Voomi Supply","version":"1.0","type":"link"}