{"product_id":"boneham-sf4812lk-slip-fixed-drill-bushing-0-5in-id-steel","title":"Boneham SF4812LK Slip-fixed Drill Bushing 0.5in Id Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BONEHAM SF4812LK is a slip-fixed drill bushing designed for precision hole guidance in jig and fixture applications. Built to ANSI standards, it features a 0.5000-inch inside diameter, a 0.75-inch body outside diameter, and a 0.75-inch length under the head. The hardened steel construction delivers a Rockwell hardness of 60 to 65 HRC, providing wear resistance under repeated tooling passes. The headed design and LS-1 compatible lock screw make this a renewable bushing, allowing it to be removed and replaced without disturbing the jig plate. Machinists, toolmakers, and fixture builders use this part in production drilling and reaming setups.\u003c\/p\u003e\n\u003cp\u003eThe SF4812LK fits into standard SF-series bushing liners pressed into drill jig plates. It is suited for production environments where bushings require periodic replacement due to wear. The slip-fixed installation method allows the bushing to be locked in place during the drilling cycle and removed when the tool needs to change. This configuration is common in multi-operation fixtures used in metal fabrication, aerospace component work, and general machining shops. Renewable construction reduces the cost of jig maintenance over extended production runs.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.5000-inch inside diameter with a tolerance of +0.0001 to +0.0005 inches for precision tool guidance\u003c\/li\u003e\n  \u003cli\u003eHardened steel body at 60 to 65 HRC for long service life in high-cycle drilling applications\u003c\/li\u003e\n  \u003cli\u003eRenewable bushing design allows field replacement without replacing the jig liner\u003c\/li\u003e\n  \u003cli\u003eLS-1 compatible lock screw secures the bushing during the cutting cycle\u003c\/li\u003e\n  \u003cli\u003eHeaded configuration with a 1-3\/64-inch head outside diameter and 0.25-inch head height\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI standards for SF-series slip-fixed drill bushings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with LS-1 lock screws and standard SF-series drill jig liner bushings per ANSI specifications. No additional compatible model numbers were specified in the product data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by toolmakers or machinists during jig setup or maintenance. Before replacing a worn bushing, secure the workpiece fixture and ensure all drilling equipment is powered down and locked out. The slip-fixed bushing is inserted into a pressed liner and rotated to engage the lock screw. Use of a dedicated lock screw driver or appropriate hex key for the LS-1 screw is recommended to avoid damaging the bushing head.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.5000 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: 0.7500 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: 1-3\/64 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Height\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBushing Material\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\u003eInstallation Method\u003c\/strong\u003e: Slip-Fixed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBushing Industry Code\u003c\/strong\u003e: SF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: Head\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbored\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRenewable\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLock Screw Compatibility\u003c\/strong\u003e: LS-1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI\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: SF4812LK\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51727588065586,"sku":"SF4812LK","price":20.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d089b0a7b36c5d4ca8f716b32e5b0d8a_a586f8d7-2e70-4677-99e9-31caf7843b4a.jpg?v=1788679621","url":"https:\/\/voomisupply.com\/products\/boneham-sf4812lk-slip-fixed-drill-bushing-0-5in-id-steel","provider":"Voomi Supply","version":"1.0","type":"link"}