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Box of 45 zinc-plated steel cotter pins

MIDWEST FASTENER CORP

MIDWEST FASTENER CORP 930243 Cotter Pins 9/64" x 1-1/4" Zinc Steel 45PK

SKU CH-WFZ9-YKF1Y

Pack of 45 zinc-plated steel cotter pins for securing metal assemblies

  • Product typePins
  • 45 pins per pack keeps spares on hand
  • 9/64" diameter fits standard fastener holes
  • 1-1/4" length secures thicker assemblies
  • Zinc-plated steel resists corrosion in outdoor use
  • Split-pin design locks nuts and bolts reliably

Product identity

This pack contains forty-five zinc-plated steel cotter pins measuring 9/64 inch by 1-1/4 inch. Mechanics, hobbyists and maintenance teams use them to lock castellated nuts, clevis pins and drilled shafts on vehicles, machinery and farm equipment. The split-pin design provides a simple, reusable mechanical lock that resists vibration loosening.

What the bundle changes

A forty-five-piece quantity covers multiple repair jobs without re-ordering, keeping common sizes on hand for brake work, linkage adjustments and trailer hitch maintenance. Zinc plating adds a layer of corrosion resistance for outdoor and under-vehicle exposure. The pins arrive sorted in a single package, reducing bench clutter and lost hardware.

Build and daily use

Zinc-plated steel delivers the shear strength expected of standard cotter pins while the coating slows rust on exposed threads. Each pin installs by inserting the tines through a drilled hole and bending them back with pliers, a process that requires no special tools. The 9/64 inch diameter fits matching fastener holes, and the 1-1/4 inch length spans typical nut-and-bolt stacks.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 80% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameMIDWEST FASTENER
Product typePins

Questions about this item

Will the zinc plating on these 9/64" cotter pins need replacement after exposure to moisture?

The zinc plating provides corrosion resistance for the steel pins; inspect periodically and replace any pin showing white rust or red rust to maintain joint integrity.

What is the first limit reached when these pins secure a vibrating assembly all day?

The split pin's two tines can fatigue from repeated flexing; the limit is tine fracture or loss of tension allowing the pin to work loose.

Do the 45 zinc steel pins generate heat or noise during continuous operation?

Cotter pins are passive fasteners with no moving parts of their own; they produce no heat and no audible noise while installed.

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