Rotor Clip E-37ST Zd External E Retaining Ring 3/8 in

Product Description

The ROTOR CLIP E-37ST ZD is an external E-style retaining ring engineered for securing components on shafts in industrial and mechanical assemblies. Designed for a 3/8-inch (0.375-inch) shaft diameter, the ring seats into a groove with a 0.303-inch groove diameter and holds position with three prongs for reliable axial retention. Manufactured from SAE 1060-1090 carbon steel and finished with a yellow zinc dichromate coating, it delivers corrosion resistance and a hardness rating of 37-43 HRC. Maintenance technicians, millwrights, and assembly professionals working with shaft-mounted components rely on this ring for fast, tool-assisted installation and removal.

This retaining ring is suited for use in rotating shaft assemblies across a range of industrial, HVAC, and mechanical applications where a compact external E-style ring is required. Its inch-measurement design fits standard 3/8-inch shafts common in motors, pumps, and light-duty drive assemblies. The zinc-dichromate finish provides additional protection in environments with moderate exposure to moisture or mild chemicals. This part is sold individually but is subject to a minimum order quantity of 100 units.

Key Features

• E-style three-prong design for tool-assisted installation and secure axial retention on 3/8-inch shafts
• Yellow zinc dichromate finish for corrosion resistance in moderate-exposure environments
• SAE 1060-1090 carbon steel construction with 37-43 HRC hardness for consistent spring performance
• Groove diameter of 0.303 inches with a groove width of 0.039 inches for precise fitment
• Ring thickness of 0.035 inches and free outside diameter of 0.66 inches
• Meets SAE 1060-1090 and UNS G10600-G10900 standards; manufactured under ISO 13485:2015 quality system

Compatibility

Designed as an OEM-style external E-style retaining ring for standard 3/8-inch shaft diameters in inch-measurement mechanical assemblies.

Installation Notes

Installation and removal should be performed using proper external E-ring pliers or snap ring tools to prevent ring distortion or personal injury. Always de-energize and lock out the equipment before servicing any shaft-mounted assembly. Confirm groove dimensions match the ring specifications before installation. Do not over-spread the ring during installation, as exceeding the elastic limit will reduce retention force.