Cotter pins, also known as split pins, are a fundamental class of fasteners designed for one primary purpose: to securely lock components together and prevent them from coming apar...

Cotter pins, also known as split pins, are a fundamental class of fasteners designed for one primary purpose: to securely lock components together and prevent them from coming apart. They consist of a semi-circular wire formed into a loop (eye) head at one end and two straight tines (prongs) at the other. The pin is inserted through a pre-drilled hole in a shaft or bolt, and the tines are then bent outward, creating a positive mechanical lock that resists vibration and shock. This straightforward principle delivers exceptional reliability. Our range includes multiple types like the common double-split pin, the R-type for easier installation, and hairpin clips for quick applications. They are manufactured from various materials including Mild Steel (MS), Stainless Steel (SS304/SS316), Brass, and Copper, with surface finishes like Zinc Plated, Nickel Plated, Galvanized, or Passivated to combat corrosion and suit specific environmental needs.

The utility of cotter pins spans virtually every industry that involves machinery and moving parts. In automotive and heavy vehicle manufacturing, they are critical for securing wheel bearings, axle nuts, and steering linkages. The agricultural sector relies on them for tractor hitches, plough assemblies, and combine harvesters. Aerospace and marine engineering specify high-grade stainless steel cotter pins for their excellent corrosion resistance in harsh environments. General industrial manufacturing uses them extensively in conveyor systems, presses, and assembly line fixtures. Furthermore, they are staples in construction equipment, railway maintenance, and even in the assembly of consumer durable goods, proving their role as a universal, trusted fastener.

For businesses, the value of a high-quality cotter pin lies in its contribution to operational safety, equipment longevity, and reduced downtime. A failed fastener can lead to catastrophic machine failure, costly repairs, and safety hazards. Our cotter pins are manufactured to precise standards including DIN 94, ISO 1234, BS 1574, and ASME B18.8.1, ensuring consistent dimensions, proper fit, and reliable performance. With a tensile strength ranging approximately from 400 to 600 MPa depending on material, they are built to withstand significant stress. Offering a choice of pin diameters from 1.6 mm to 12.7 mm (1/16" to 1/2") and various head types, we provide a reliable component that integrates seamlessly into your supply chain, giving you and your end-users confidence in every assembly.

Key Features:
- Available in multiple types: Double-Split, R-Type, and Hairpin Type variants for different installation needs.
- Constructed from robust materials including Mild Steel, Stainless Steel (SS304/SS316), Brass, and Copper.
- Offered with protective surface finishes: Zinc Plated, Nickel Plated, Galvanized, and Passivated for enhanced durability.
- Manufactured to international standards: DIN 94, ISO 1234, BS 1574, and ASME B18.8.1 for guaranteed compatibility.
- Sizes range from 1.6 mm to 12.7 mm (1/16" to 1/2") in diameter with a loop (eye) head design for easy handling.

Benefits:
- Provides a secure, vibration-resistant lock for clevis pins, castle nuts, and shafts, preventing accidental disassembly.
- Enables easy installation and removal with basic tools, simplifying maintenance and part replacement procedures.
- Corrosion-resistant material and finish options extend component life in demanding or outdoor environments.
- High tensile strength (approx. 400-600 MPa) ensures reliable performance under mechanical stress and load.
- Versatile application across industries from automotive and agriculture to aerospace and industrial machinery.