M1–M7 Steel R Type Spring Cotter Pin — Wave Shape Split Clip Clamp Hair Pin for Car & Machinery

M1–M7 Steel R Type Spring Cotter Pin — Wave Shape Split Clip Clamp Hair Pin for Car & Machinery

Steel R type spring cotter pins (hair pins / wave split clips) for shaft retention, clevis pin locking, and quick-release fastening in automotive, agricultural, and general machinery applications. The R-shaped spring clip snaps onto a shaft groove or through a hole, providing a secure but easily removable retention without tools. Available in M1–M7 sizes.

Key Specifications

Why Choose R Type Spring Cotter Pins?

• Tool-free installation and removal — snap on and pull off by hand for quick maintenance
• Spring steel construction — maintains clamping force over repeated installation cycles
• M1–M7 range — covers miniature electronics to automotive and agricultural machinery
• Reusable — can be removed and reinstalled multiple times without deformation
• Compact — low-profile retention without protruding hardware

Typical Applications

• Clevis pin and hitch pin retention in agricultural equipment (tractors, implements)
• Automotive linkage and throttle cable retention
• Shaft groove retention in machinery and power tools
• Quick-release pin locking in jigs and fixtures
• RC model and drone linkage retention
• General machinery maintenance and repair

FAQ

Q: What is the difference between an R pin and a traditional cotter pin?
A: A traditional cotter pin (split pin) is inserted through a hole and bent to lock in place — it is single-use and must be replaced after removal. An R type spring pin snaps onto a shaft groove or through a hole and can be removed and reinstalled repeatedly without deformation.

Q: What size R pin do I need for my shaft?
A: The R pin size should match the shaft diameter. For example, an M3 R pin fits a 3mm shaft groove. Measure the shaft diameter and select the matching size.

Package Contents

• Steel R type spring cotter pins (quantity and size per selected variant)