Rotor Clip SH-25ST Zd External Retaining Ring 1/4 in

Product Description

The ROTOR CLIP SH-25ST ZD is an external retaining ring designed to secure components on a 1/4-inch (0.250-inch) shaft. Made from SAE 1060-1090 carbon steel with a yellow zinc dichromate finish, it provides corrosion resistance in typical industrial and mechanical environments. The ring seats into a 0.230-inch groove diameter and holds a ring thickness of 0.025 inches. Licensed HVAC technicians, plumbers, electricians, and industrial mechanics encounter this style of retaining ring when servicing shaft assemblies, pump impellers, motor shafts, and similar rotating components. The hardness rating of 69.5-73 HRC delivers reliable retention under load without excessive deflection.

This external retaining ring is suited for light-duty shaft retention applications in residential and commercial mechanical systems. It fits shafts with a nominal diameter of 1/4 inch (6.35 mm) and installs into a machined external groove. Typical applications include HVAC fan shaft assemblies, small pump shafts, actuator linkages, and general fastener applications where a compact, low-profile retaining solution is required. The zinc-plated finish makes it appropriate for indoor and moderately controlled environments. Minimum order quantity is 100 pieces.

Key Features

• Fits 1/4-inch (0.250-inch) nominal shaft diameter
• SAE 1060-1090 carbon steel construction, hardness 69.5-73 HRC
• Yellow zinc dichromate finish for corrosion protection
• Groove diameter: 0.230 inches with tolerance of -0.0015 to +0.0015 inches
• Ring thickness: 0.025 inches; groove width: 0.029 inches
• Meets SAE 1060-1090 and UNS G10600-G10900 standards; ISO 13485:2015 listed

Compatibility

Designed as a standard external retaining ring for 1/4-inch shafts conforming to SAE 1060-1090 and UNS G10600-G10900 groove specifications. Verify groove dimensions against the 0.230-inch groove diameter and 0.029-inch groove width before installation.

Installation Notes

External retaining rings of this type are installed and removed using external snap ring pliers; standard internal pliers are not compatible and can damage the ring or shaft. Always de-energize and lock out the equipment before accessing shaft assemblies. Confirm groove dimensions and tolerances match the ring specifications before installation to ensure proper seating and retention force. Rings should be replaced rather than reused after removal, as the spring temper can be compromised.