Rotor Clip TX-31ST Pa Retaining Ring 5/16 Inch Shaft

Product Description

The ROTOR CLIP TX-31ST PA is an external self-locking retaining ring designed for use on shafts with a 5/16 inch (0.3125 inch) diameter. Manufactured from SAE 1060-1090 steel with a phosphate finish, this ring seats directly on the shaft without requiring a groove, making it a reliable option for assemblies where groove machining is impractical or cost-prohibitive. With a free outside diameter of 0.584 inches and a ring thickness of 0.015 inches, it delivers a compact retaining profile. The 8-prong self-locking design bites into the shaft surface to resist axial movement. Installation is typically performed by mechanical assembly technicians and maintenance professionals across industrial, automotive, and light manufacturing applications.

This retaining ring is suited for shaft retention tasks in both new assemblies and field repair situations. It fits shafts ranging from a minimum diameter of 0.308 inches to a maximum of 0.316 inches, accommodating standard 5/16 inch shaft tolerances. The phosphate finish provides a baseline level of corrosion resistance appropriate for moderate indoor service environments. Applications span machinery, drive assemblies, and similar mechanical systems where a quick, groove-free retaining solution is needed.

Key Features

• External self-locking design with 8 prongs — no shaft groove required
• Fits 5/16 inch nominal shaft diameter (0.308 to 0.316 inch range)
• Free outside diameter of 0.584 inches with a tight OD tolerance of -0.005 to +0.005 inches
• Ring thickness of 0.015 inches with a tolerance of -0.002 to +0.002 inches
• Hardness rated at 84-86 HR15N for consistent prong engagement
• Phosphate finish for baseline corrosion protection in indoor service conditions

Compatibility

Designed as an OEM-style external self-locking retaining ring for standard 5/16 inch diameter shafts in industrial, automotive, and mechanical assembly applications. Conforms to SAE 1060-1090 and UNS G10600-G10900 material standards, and is manufactured under ISO 13485:2015 quality management requirements.

Installation Notes

Installation is performed by mechanical technicians using retaining ring pliers or a suitable push tool rated for self-locking ring applications. Ensure the shaft surface is clean and free of burrs or coatings that could prevent the prongs from seating properly. Self-locking rings are typically single-use components — once removed, the prong engagement is compromised and the ring should be replaced rather than reused. Follow applicable machinery safety lockout/tagout procedures before installing or removing retaining rings on powered equipment.