Overview
The 304 Stainless Steel Cotter Pin is a precision-engineered, non-threaded fastener designed for secure locking in high-vibration and high-stress industrial environments. Its primary function is to secure clevis pins, axle shafts, and other components by inserting through a cross-drilled hole and bending its prongs to prevent unintentional removal. Manufactured from corrosion-resistant A2-grade stainless steel, this pin is built to withstand demanding conditions, including exposure to moisture, chemicals, and temperature variations, ensuring long-term reliability and reduced maintenance frequency.
Key Features
Constructed from A2-grade 304 stainless steel for superior corrosion resistance Plain, uncoated finish suitable for a wide range of environmental conditions 0.315-inch nominal diameter for a secure fit in standard drilled holes 4.33-inch overall length provides ample material for proper prong bending and retention Hairpin-style design with a circular head and two straight, tapered prongs for easy installation and removal Provides a reusable, positive mechanical lock for rotating and sliding assemblies
Specifications
System of Measurement: Metric (converted to Imperial for specifications) Material Grade/Class: A2
Material
Stainless Steel Thread Size: None Finish: Plain Pin Diameter: 0.315 in Overall Length: 4.33 in Package Quantity: 80
Applications
Securing hitch pins and clevis pins on agricultural and construction equipment Locking castle nuts on wheel bearings and axle assemblies General machinery maintenance and repair in manufacturing facilities OEM part replacement in automotive, transportation, and marine industries Use in food processing and chemical plants where corrosion resistance is critical Securing components in material handling and conveyor systems








