Flexible Shipping
Machrio
AccountCart is empty
Stainless Steel 304 Cotter Pin, 1/4" x 3-1/8" Plain Finish, Pkg Qty 100

Hover to zoom

Industrial · SKU: AG0862144

Stainless Steel 304 Cotter Pin, 1/4" x 3-1/8" Plain Finish, Pkg Qty 100 (4X3)

This 304 stainless steel cotter pin provides reliable, corrosion-resistant security for industrial and marine applications.

Contact for Availability
$29.99
$0.30/each(100 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$29.99
11 - 50-5%$28.49
51+-10%$26.99
Request Quote

Free Shipping $200+

On qualifying orders

Fast DDP Delivery

Door-to-door service

24/7 Support

Expert assistance

Quick Answer

How Buyers Should Evaluate Stainless Steel 304 Cotter Pin, 1/4" x 3-1/8" Plain Finish, Pkg Qty 100 (4X3)

This 304 stainless steel cotter pin provides reliable, corrosion-resistant security for industrial and marine applications. Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.

Quick Spec Check

  • System of Measurement: Metric
  • Material Grade/Class: 304
  • Material: Stainless Steel

Purchase Details

  • Online price starts at $29.99.
  • Minimum order quantity: 1 unit.
  • Pack quantity: 100 / Each.
  • Lead time: 2-3 weeks.

Use RFQ When

  • Use RFQ when you need bulk pricing, alternate pack sizes, or multi-SKU comparison.
  • Request support when fit, material, or substitute selection needs confirmation before order.
  • Escalate to sourcing when timeline, freight, or stocking strategy matters more than one-off checkout speed.

Technical Specifications

System of MeasurementMetric
Material Grade/Class304
MaterialStainless Steel
Thread SizeNone
FinishPlain
Pin DiameterM6
Length3.15 in
Product Details

Full Description

Application context, construction notes, and selection details for evaluating fit before purchase or repeat ordering.

Overview

This industrial-grade cotter pin is engineered for permanent or semi-permanent securement in high-stress and corrosive environments. Manufactured from austenitic stainless steel, it provides a dependable mechanical lock for clevis pins, axle shafts, and other through-hardened fasteners. Its primary function is to prevent the unintended disassembly of critical components by securely lodging in a pre-drilled cross-hole. The plain, non-reflective finish makes it suitable for general industrial, marine, and outdoor equipment applications where long-term reliability is paramount.

Key Features

Constructed from corrosion-resistant 304 stainless steel Plain, non-reflective finish for reduced visibility and glare Dual-prong design for secure splaying and locking action High shear strength for demanding mechanical applications Excellent resistance to oxidation and weathering

Specifications

Material: 304 Stainless Steel Finish: Plain Pin Diameter: 1/4 inch Overall Length: 3-1/8 inches System of Measurement: Metric (M6 x 80mm equivalent) Thread Size: None Package Quantity: 100 pieces

Applications

Securing hitch and linkage pins on agricultural and construction machinery Locking axle nuts and castle nuts on automotive and trailer assemblies Marine hardware and rigging applications Industrial valve and pump assemblies General maintenance, repair, and operations (MRO) use

Frequently Asked Questions

What are the exact dimensions and material specifications for this cotter pin?
This cotter pin is made from corrosion-resistant Stainless Steel 304. It has a pin diameter of 1/4 inch and a total length of 3-1/8 inches, with a plain, unfinished surface.
What are the typical applications for this size and grade of cotter pin?
This 1/4" x 3-1/8" Stainless Steel 304 pin is commonly used for securing clevis pins, axle nuts, and other fasteners in machinery, marine, and outdoor equipment where rust resistance is critical. It is suitable for general industrial maintenance, construction, and agricultural applications.
How is this product packaged for order, and what is the minimum quantity?
This cotter pin is packaged in bulk quantities of 100 pieces per bag or box. Orders are fulfilled as single units of this 100-piece package, which is ideal for maintenance shops or production lines requiring consistent supply.