Industrial Grade Cotter Pins (Split Pins) – DIN 94 / ISO 1234
The Handan Bolt Cotter Pin (also known as a Split Pin) is a general-purpose wire forming fastener used to secure other fasteners in place. Compliant with DIN 94 and ISO 1234 standards, our pins feature a bulbous head and two tines (legs) of different lengths, designed to be bent during installation to create a permanent locking mechanism.
Mechanism of Action
Cotter pins are typically used to lock a clevis pin in place or to secure a castle nut on a bolt system. Once inserted through the hole, the two tines are bent in opposite directions, preventing the pin from vibrating loose. This simple yet effective design makes it a critical safety component in automotive and machinery assemblies.
For more details on the history and types of wire fasteners, you can refer to the Split Pin entry on Wikipedia.
Technical Specifications
- Material Options: Available in Carbon Steel (Mild Steel), Stainless Steel (304/316) for marine environments, and Brass.
- Surface Treatment: Bright Zinc Plated (Cr3+), Yellow Zinc, or Plain finish.
- Standard Compliance: Strictly manufactured to DIN 94, ISO 1234, and ANSI/ASME B18.8.1 specifications.
- Design Features: Chisel point or bevel point ends for easy insertion; extended prong for easy bending.
Common Applications
As a trusted locking pin manufacturer, Handan Bolt supplies these pins for various industries:
- Automotive: Securing wheel bearings and castle nuts on axles.
- Heavy Machinery: Locking clevis pins in hydraulic cylinder systems.
- Railways & Mining: Vibration-resistant fastening for safety-critical joints.
Installation Tips
- Insert the cotter pin into the hole of the bolt or clevis pin until the head rests against the surface.
- Secure the pin by spreading the prongs (legs) in opposite directions using pliers.
- Ensure the bent legs are tight against the fastener to prevent snagging.
- Note: Cotter pins are single-use items and should be replaced after removal to ensure metal fatigue does not compromise safety.
Looking for specific sizes or bulk pricing? Contact our sales team directly for a fast quote.
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