Cotter Pins

South Coast Fasteners, Inc. provides cotter pins that keep your fasteners and clevis pins locked in place, ensuring your assemblies stay safe and secure. These split pins are commonly used in automotive, agricultural, industrial, and construction equipment to stop nuts and bolts from coming loose. They’re simple to install and just as easy to remove, making them a reliable choice for both temporary fixes and permanent connections.

Your Supplier for High-Performance Industrial Fasteners

If you're looking for a trusted supplier of wholesale industrial fasteners, South Coast Fasteners is your solution. Contact our Anaheim, CA office to learn more about our product options and how we can support your project needs. For helpful service, fast order turnaround, and high-quality fasteners in bulk or small batches, choose South Coast Fasteners.

Material Options

South Coast Fasteners stocks cotter pins in several material options suited for locking, securing, and fastening applications across mechanical, automotive, and industrial use. Whether you're pinning a clevis, anchoring hardware, or securing shafts and components, our cotter pins are built for strength and reliability across a variety of environments.

Stainless Steel 18-8

A versatile and corrosion-resistant material for most general-purpose applications. 18-8 stainless steel cotter pins offer a clean finish and long-lasting durability, especially in mildly corrosive environments such as indoor assembly work, HVAC systems, and general manufacturing. They're ideal where both appearance and strength matter.

Stainless Steel 300

This broader classification of stainless steel includes multiple grades designed for strength and resistance to oxidation and moisture. Stainless 300-series cotter pins provide added resistance in damp or semi-corrosive conditions, making them a go-to in outdoor assembly, marine equipment, and structural applications that demand non-rusting performance.

Steel

Steel cotter pins are cost-effective and widely used in everyday fastening and retaining tasks. With a strong base material that holds its shape under stress, plain steel cotter pins are ideal for non-corrosive indoor environments or temporary assemblies where value and rigidity are more important than weather resistance.

Available Finishes

Each finish is designed to meet different performance standards, from rust protection to visual consistency. South Coast Fasteners offers cotter pins in:

Plain

A raw, uncoated finish best for dry environments or when the pin will be coated or painted after installation. Plain cotter pins are easy to bend and install, commonly used in machinery, light automotive work, and general-purpose equipment.

Zinc

This finish adds a layer of corrosion resistance with a clean, silver appearance. Zinc-plated cotter pins are a popular choice for hardware exposed to light moisture, mild chemicals, or general outdoor use. The coating protects the steel beneath from rusting prematurely, extending the life of the assembly

Why Choose South Coast Fasteners?

South Coast Fasteners offers cotter pins in a variety of materials and finishes to provide lasting, dependable fastening. Whether you’re working on machinery, trailers, or structural assemblies, we have the sizes and quantities you need to keep everything secure.

Order Cotter Pins Online Today

Ordering cotter pins is easy with South Coast Fasteners. Browse our online inventory or reach out if you need help with sizing or choosing the right fit. We’re here to help you lock your components in place with confidence.