Rotor Clip SH-40ST Pa External Snap Retaining Ring

Product Description

The ROTOR CLIP SH-40ST PA is an external snap retaining ring designed to secure components on shafts by seating in a machined groove. It fits a 13/32 inch (0.4063 inch decimal) shaft diameter with a groove diameter of 0.382 inches. Made from SAE 1060-1090 spring steel with a phosphate finish, this ring delivers reliable holding force in mechanical assemblies. Hardness is rated at 69.5-73 HRC, providing resistance to deformation under load. Licensed tradespeople and mechanical maintenance technicians install these rings during equipment assembly, repair, and overhaul work where positive axial retention is required.

This external retaining ring is suited for industrial and mechanical applications where shaft-mounted components such as bearings, gears, collars, or pulleys must be held in axial position. The phosphate finish provides a base-level corrosion inhibitor and aids in lubrication retention. It is appropriate for use in HVAC equipment drive assemblies, pump shafts, motor shafts, and general mechanical assemblies requiring a compact, low-profile retention solution. The 0.029 inch groove width and 0.025 inch ring thickness conform to standard SAE groove dimensions, making this ring a straightforward drop-in fit for properly machined shafts.

Key Features

• External snap ring design provides axial retention on 13/32 inch shafts
• SAE 1060-1090 spring steel construction with 69.5-73 HRC hardness rating
• Phosphate finish inhibits corrosion and supports lubrication retention
• Groove diameter of 0.382 inches with tolerance of -0.002 to 0.002 inches
• Ring thickness of 0.025 inches meets SAE and UNS G10600-G10900 standards
• Compliant with ISO 13485:2015 quality management standards

Compatibility

Designed as an OEM-style external snap retaining ring for standard 13/32 inch shaft diameters machined to SAE groove specifications. Confirm groove diameter, groove width, and groove depth on the target shaft before installation.

Installation Notes

External snap rings are installed and removed using snap ring pliers rated for external-style rings — do not substitute with internal pliers or improvised tools, as ring distortion or ejection can cause injury. Power down and de-energize any equipment before servicing shaft assemblies. Ensure the groove is clean and free of burrs before seating the ring. Always wear eye protection, as snap rings under tension can release with significant force.