| Types | Materials | Coatings | Sizes |
| Extended Prong | Steel | Zinc Trivalent | 1/16" - 1/12" diameter |
| Even Prong | Stainless | Cadmium | 1/4" to 12" lengths |
| Hammerlock | Brass | Zinc | |
| Self Spreading | Monel | Plain Steel | |
| Knee Hump | Copper | Parkerized | |
| Bronze | Zinc/Yellow | ||
| Aluminum | Cadmium/Yellow | ||
| Inconel | Passivated | ||
| Hastalloy |
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Metric cotter pins per ASME B18.8.6M and DIN 94 specifications
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NASM-24665 (MS-24665), AN-380, AN-381, MS-9245, BAC-P18BC, ANSI B18.8.1