{"product_id":"boneham-sf4812id-slip-fixed-drill-bushing-0-295-in-id-steel","title":"Boneham SF4812ID Slip-fixed Drill Bushing 0.295 in Id Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BONEHAM SF4812ID is a slip-fixed drill bushing designed to guide cutting tools accurately during drilling, reaming, and boring operations in jig and fixture applications. Built to ANSI standards, this bushing features an inside diameter of 0.295 inches (letter size M) with a tight tolerance of +0.0001 to +0.0005 inches, ensuring precise tool guidance and repeatable hole location. The body outside diameter measures 0.75 inches with a length under the head of 0.75 inches. Constructed from steel hardened to 60 to 65 HRC, it delivers the wear resistance required for high-volume production environments. A licensed machinist or toolmaker installs this bushing into a drill jig liner or plate as part of a precision machining setup.\u003c\/p\u003e\n\u003cp\u003eThis bushing is suited for use in drill jigs across manufacturing, metalworking, and machine shop environments. The slip-fixed configuration allows the bushing to be installed and locked in place using a compatible LS-1 lock screw, making it appropriate for single-operation setups where the bushing remains fixed during the drilling cycle. The head style provides a positive stop against the jig plate surface, maintaining consistent drill depth and alignment. It is a renewable bushing, meaning it can be replaced independently without replacing the jig liner, reducing tooling maintenance costs in production settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eInside diameter of 0.295 inches (letter size M) with tolerance of +0.0001 to +0.0005 inches for precise tool guidance\u003c\/li\u003e\n  \u003cli\u003eSteel construction hardened to 60 to 65 HRC for extended wear life\u003c\/li\u003e\n  \u003cli\u003eSlip-fixed design compatible with LS-1 lock screw for secure, removable installation\u003c\/li\u003e\n  \u003cli\u003eHead outside diameter of 1-3\/64 inches and head height of 0.25 inches for positive jig plate seating\u003c\/li\u003e\n  \u003cli\u003eRenewable bushing construction allows individual replacement without liner removal\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI standards for drill bushing dimensions and performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with LS-1 lock screws. Designed as an ANSI-standard slip-fixed drill bushing for use with standard drill jig liners accepting a 0.75-inch body outside diameter bushing.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist or toolmaker as part of jig and fixture assembly. Ensure the jig liner bore is clean and dimensionally correct before pressing the bushing into position. Secure with a compatible LS-1 lock screw and verify the bushing seats flush against the jig plate surface. Do not force an oversized bushing into an undersized liner, as this can distort the inside diameter and compromise tool guidance accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInside Diameter\u003c\/strong\u003e: 0.295 inches (Letter Size M)\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\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 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\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: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbored\u003c\/strong\u003e: No\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\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: SF4812ID\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BONEHAM","offers":[{"title":"Default Title","offer_id":51731891159346,"sku":"SF4812ID","price":21.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d089b0a7b36c5d4ca8f716b32e5b0d8a_f159239b-8da4-4c6e-9fd8-d15db0ff078e.jpg?v=1788736142","url":"https:\/\/voomisupply.com\/products\/boneham-sf4812id-slip-fixed-drill-bushing-0-295-in-id-steel","provider":"Voomi Supply","version":"1.0","type":"link"}