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Fastener Superstore Blog

Three Styles of Mil-Spec Pins Available at Fastener SuperStore.

Pins at Fastener SuperStore

Fastener SuperStore now carries 3 styles of Mil-Spec Pins:

  • MS16555 - Dowel Pins - Like all dowel pins, this line consists of solid, cylindrical-shaped metal, tapered on each side: One side is chamfered while the other is radiused to form a crown. Made with extreme precision, the chamfered end is inserted into a precisely sized hole and then gently pushed or tapped into place rather than being forced in by striking. They are used to hold parts in a fixed position or alignment, or to join two parts together. Our mil-spec dowel pins are made from 400 series stainless steel.
  • MS16562 - Slotted Spring Pins - Slotted Spring Pins are hollow tubes with a longitudinal slot running the entire length of the part. They're made with an outside diameter slightly larger than the hole they are being inserted into. The chamfered ends allow the pin to start into the designated hole. Once started, the pin is tapped into the hole, which causes the slot to compact. This compaction results in the pin pushing outward inside the hole, creating a tight hold. Our mil-spec slotted spring pins are available in steel with a zinc phospate coating.
  • MS9245 - Cotter Pins - Cotter Pins are formed from half round wire with a circular shape at the top, extending to two prongs, both chiseled while one end is slightly extended beyond the other. The chiseled ends are inserted into a drilled hole in a shaft, and the two points of the pin are then separated and wrapped around the shaft, holding a wheel or other piece onto the shaft. Our mil-spec cotter pins are made from T321 stainless steel.
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