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PINS

There are three primary pin styles offered by InStock Fasteners ? cotter pins, dowel pins and spring pins.

Cotter Pin Cotter Pin

Cotter pins feature a loop at the top where a head may otherwise be. They have a two-part shaft that can be pried apart with force. The ends of cotter pins are split and bent over to prevent them from becoming unsecured. Cotter Pins are used to anchor assemblies by insertion into a drilled hole and then spreading the shafts' points to hold the assembly in place. Cotter pins can also serve as safety locking devices through slotted or castle hex nuts, or through clevis pins.

Dowel Pin (Unhardened Ground variation) Dowel Pin

Dowel pins have ground cylindrical sides with both ends chamfered. Dowel pins are used where precise locating of mating parts is necessary, but with relatively minor wear or shock factors.

Dowel pins are often used as a plug gage, hinge, or shaft. Their precise tolerance makes them excellent for achieving proper alignment of parts in high-speed assemblies.

Spring Pins Spring Pins

Also called Roll Pins, Tension Pins, and Expansion Pins, Spring Pins are hollow and slotted across the length to facilitate tension. Spring Pins are made of carbon spring steel, a pliable yet effective steel ideal for this pin's applications.

Spring pins can be used for many jobs, including electrical connectors in circuits, terminals, actuators, wire harness fixtures, studs, hinges, fixing pulleys or gears to shafts, and more. They permit a wider tolerance than drive pins, taper pins, or collar pins because of their greater flexibility. In addition, the tapered ends of spring pins make them relatively easy to insert and drill.

Taper Pins   Taper Pins

Also called Tapered Pins, they are steel rods with one end having a slightly larger diameter than the other. Standard inch-sized tapered pins have a taper on diameter of 1:48 while metric ones have a taper of 1:50. The nominal size indicates the diameter of the smaller end of a taper pin.

 

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