{"product_id":"rotor-clip-re-31st-pa-e-style-retaining-ring-5-16-in","title":"Rotor Clip RE-31ST Pa E Style Retaining Ring 5\/16 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ROTOR CLIP RE-31ST PA is an external reinforced E style retaining ring designed to seat in a machined groove on a shaft and resist axial displacement of assembled components. Built from SAE 1060-1090 steel with a phosphate finish, this ring fits a 5\/16 inch (0.3125 inch) shaft diameter with a groove diameter of 0.25 inches. The three-prong reinforced E style design provides a secure grip without requiring special pliers for installation, making it a practical choice for high-volume mechanical assembly work. Machinists, maintenance technicians, and assembly line professionals use this ring in applications where a compact, reliable retaining solution is required.\u003c\/p\u003e\n\u003cp\u003eThis retaining ring is suited for use in light machinery, motors, pumps, and precision mechanical assemblies where external shaft retention on small-diameter shafts is needed. The phosphate finish provides moderate corrosion resistance and improves lubrication retention in service environments. With a free outside diameter of 0.588 inches and a ring thickness of 0.025 inches, it fits into tight clearance applications. It is sold in a minimum order quantity of 100 pieces, making it appropriate for production and MRO inventory replenishment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eReinforced E style design with 3 prongs for secure external shaft retention\u003c\/li\u003e\n  \u003cli\u003eFits 5\/16 inch (0.3125 inch) shaft diameter with 0.25 inch groove diameter\u003c\/li\u003e\n  \u003cli\u003eSAE 1060-1090 steel construction meeting UNS G10600-G10900 and ISO 13485:2015 standards\u003c\/li\u003e\n  \u003cli\u003ePhosphate finish for corrosion resistance and improved lubrication retention\u003c\/li\u003e\n  \u003cli\u003eHardness rating of 66.5-71 HR30N for durability under load\u003c\/li\u003e\n  \u003cli\u003eCompact profile with 0.025 inch ring thickness and 0.029 inch groove width\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style external retaining ring for 5\/16 inch shaft diameter applications in mechanical assemblies, motors, and precision equipment requiring SAE 1060-1090 steel E style rings.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists or mechanical assembly technicians using standard E ring installation tools or flat-nose pliers. Ensure the shaft groove is clean and dimensioned to the specified groove width of 0.029 inches and groove depth of 0.031 inches before seating the ring. Power down and de-energize any equipment before servicing components that use retaining rings. Do not overstress the ring prongs during installation, as deformation will compromise retention force.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRing Type\u003c\/strong\u003e: External Reinforced E Style\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShaft Diameter\u003c\/strong\u003e: 5\/16 inches (0.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Diameter Tolerance\u003c\/strong\u003e: -0.003 to +0.003 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Diameter\u003c\/strong\u003e: 0.242 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Outside Diameter\u003c\/strong\u003e: 0.588 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Width\u003c\/strong\u003e: 0.029 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Width Tolerance\u003c\/strong\u003e: 0.000 to +0.003 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Depth\u003c\/strong\u003e: 0.031 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRing Thickness\u003c\/strong\u003e: 0.025 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRing Thickness Tolerance\u003c\/strong\u003e: -0.002 to +0.002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: SAE 1060-1090 Steel (UNS G10600-G10900)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 66.5-71 HR30N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Phosphate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Prongs\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: SAE 1060-1090, UNS G10600-G10900, ISO 13485:2015\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 100 pieces\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: ROTOR CLIP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: RE-31ST PA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROTOR CLIP","offers":[{"title":"Default Title","offer_id":51693190938930,"sku":"RE-31ST PA","price":1173.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/969e77c9fdf5b0331b5cf6dac108d468_31d0970f-a263-4179-8eba-d2e7c3d22d50.jpg?v=1788308675","url":"https:\/\/voomisupply.com\/products\/rotor-clip-re-31st-pa-e-style-retaining-ring-5-16-in","provider":"Voomi Supply","version":"1.0","type":"link"}