Rotor Clip DSH-4SS External Snap Retaining Ring 4mm

Product Description

The ROTOR CLIP DSH-4SS is an external snap retaining ring engineered for secure axial retention on shafts with a 4 mm shaft diameter and a 3.8 mm groove diameter. Manufactured from 420 grade steel with a phosphate and oil finish, this ring provides corrosion resistance and reliable holding force in compact mechanical assemblies. At 0.40 mm ring thickness and 0.50 mm groove width, the DSH-4SS conforms to DIN 471 and SAE 1060-1090 fastener standards. It is installed by licensed mechanical technicians and assemblers working in precision equipment, instrumentation, and small-shaft applications where positive component retention is required.

The DSH-4SS is suited for use in light-duty mechanical assemblies, precision instruments, motors, and similar equipment employing metric shaft sizes in the 4 mm range. Its metric dimensioning and DIN 471 compliance make it a standard choice in European-spec and ISO-aligned equipment. The ring ships in a package quantity of five units, making it practical for both single-unit repairs and small batch assembly work. No specific OEM compatibility is stated by the supplier for this part.

Key Features

• External snap-ring design provides axial shaft retention without threading or adhesives
• 420 grade steel construction with phosphate and oil finish for corrosion resistance
• Meets DIN 471 and SAE 1060-1090 fastener standards; ISO 13485:2015 referenced
• Hardness rating of 63 to 69.5 HR30N for reliable grip under load
• Groove diameter tolerance of -0.04 to +0.04 mm supports precise fitment
• Metric dimensioning throughout for compatibility with metric-spec assemblies

Compatibility

Designed as an OEM-style external retaining ring for metric shafts with a 4 mm shaft diameter conforming to DIN 471 groove specifications.

Installation Notes

Installation and removal of snap retaining rings should be performed by qualified mechanical technicians using proper snap-ring pliers to avoid ring distortion or personal injury. Always relieve any load or pressure on the shaft assembly before removing or installing the ring. Inspect the groove for burrs or damage before seating the ring to ensure full engagement. Follow applicable equipment manufacturer service procedures and relevant safety standards for the assembly being serviced.