Cotter Pin Market Pricing
Analysis of 12,326 listings for hairpin and straight cotter pins.
What you'll usually pay
👉 In short easy summary
The best value is found in Metric systems and McMaster-Carr branded pins, which are 2% and 34% below the market median respectively. Stainless Steel and Brass options command a premium, with Brass costing 17% more than the median.
💚 Best value for your money
Price by material
Why? Prices range from Steel at 15.08 to Wood at 21.24.
Price by system of measurement
Why? Metric pins are the most affordable at 14.64, while Inch pins reach 19.99.
Price by brand
Why? Pricing varies significantly from McMaster-Carr at 9.95 to AlbanyCountyFasteners.com at 51.54.
Price by finish
Why? Zinc Plated options are 15.5, whereas Plain finishes cost 28.56.
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Common questions
What is the price difference between new and used cotter pins?
New pins have a median price of 15.32, while used pins are slightly lower at 14.96.
Which material is the most expensive option?
Wood is the most expensive material with a median price of 21.24, which is 42% above the market median.
Are branded pins more expensive than unbranded ones?
It varies; McMaster-Carr is cheaper at 9.95, while T.K.Excellent is 29.38 compared to Unbranded at 14.62.
How we got these numbers
Worked out from 200 live eBay listings (price range $9–$98, odd outliers ignored). These are asking prices, so use them as a guide. Last checked August 2, 2026.