{"product_id":"rotor-clip-e-25st-mcd-external-e-retaining-ring-1-4-in","title":"Rotor Clip E-25ST Mcd External E Retaining Ring 1\/4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ROTOR CLIP E-25ST MCD is an external E style retaining ring designed for use on shafts with a 0.25-inch diameter and a groove diameter of 0.21 inches. Manufactured from SAE 1060-1090 stainless steel with a cadmium finish, this ring delivers corrosion resistance and consistent holding force in demanding environments. At 0.025 inches thick and featuring a 3-prong design, it seats securely in the shaft groove to retain components against axial displacement. Licensed techs and mechanical assemblers working on precision equipment, fluid handling assemblies, and HVAC or pump shafting will find this ring a reliable OEM-style fastener component.\u003c\/p\u003e\n\u003cp\u003eThis retaining ring is suited for light-duty to medium-duty shaft retention applications in residential and commercial mechanical assemblies. Typical installation scenarios include motor shafts, pump impeller retention, and small-diameter shaft assemblies found in HVAC equipment, plumbing components, and related trade hardware. Its cadmium plating provides added corrosion protection in moist or chemically active service environments. The ring meets military specification MS 16633-1025 and conforms to SAE 1060-1090 and ISO 13485:2015 standards, making it acceptable for use in regulated and specification-driven installation work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eE style external ring with 3-prong design for positive shaft retention\u003c\/li\u003e\n  \u003cli\u003eFits 0.25-inch shaft diameter with 0.21-inch groove diameter\u003c\/li\u003e\n  \u003cli\u003eSAE 1060-1090 stainless steel construction, hardness 66.5-71 HR30N\u003c\/li\u003e\n  \u003cli\u003eCadmium finish for corrosion resistance in wet or chemical environments\u003c\/li\u003e\n  \u003cli\u003eMeets military specification MS 16633-1025 and ISO 13485:2015\u003c\/li\u003e\n  \u003cli\u003eGroove width of 0.029 inches and ring thickness of 0.025 inches for precise fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style external retaining ring for 0.25-inch shafts with a 0.21-inch groove diameter. Conforms to SAE 1060-1090, UNS G10600-G10900, and ISO 13485:2015 standards. Meets military specification MS 16633-1025.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation requires appropriate external retaining ring pliers sized for E style rings on small-diameter shafts. De-energize and lock out all equipment before servicing any shaft assembly. Confirm groove dimensions match ring specifications before installation to prevent ring walk or ejection under load. Cadmium-plated components should be handled with appropriate personal protective equipment per applicable safety guidelines.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRing Type\u003c\/strong\u003e: External E Style\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShaft Diameter\u003c\/strong\u003e: 0.25 inches (6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Diameter\u003c\/strong\u003e: 0.21 inches (5.33 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Diameter Tolerance\u003c\/strong\u003e: 0.0000 to 0.0030 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Diameter\u003c\/strong\u003e: 0.207 inches (5.26 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Outside Diameter\u003c\/strong\u003e: 0.527 inches (13.39 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Width\u003c\/strong\u003e: 0.029 inches (0.74 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Width Tolerance\u003c\/strong\u003e: 0.0000 to 0.0030 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGroove Depth\u003c\/strong\u003e: 0.02 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRing Thickness\u003c\/strong\u003e: 0.025 inches (0.64 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRing Thickness Tolerance\u003c\/strong\u003e: -0.0020 to 0.0020 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Prongs\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: SAE 1060-1090 Stainless Steel (UNS G10600-G10900)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Cadmium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: 66.5-71 HR30N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMilitary Specification\u003c\/strong\u003e: MS 16633-1025\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\u003eWeight\u003c\/strong\u003e: 0.0008 pounds\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: E-25ST MCD\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ROTOR CLIP","offers":[{"title":"Default Title","offer_id":51695344976178,"sku":"E-25ST MCD","price":5056.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/51d381682b7fcd8c8704e747bfcbc615_bc262af2-4d17-4e01-ac64-72da8c4da5e9.jpg?v=1788334079","url":"https:\/\/voomisupply.com\/products\/rotor-clip-e-25st-mcd-external-e-retaining-ring-1-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}