Why are split pins used?

Split pins are commonly used to fasten a shaft or similar component in place. They are also used to keep machinery aligned. The split pin is placed through a hole and the tines of the pin are then bent to hold the pin in place. You will need a set of pliers or additional tools to help you bend the tines into position.

What is the difference between split pin and cotter pin?

Cotter pins are most commonly used to lock castle and slotted nuts or secure a clevis pins as well as wheel or machine components on an axle. Cotter pins are easy to install and remove. A split pin has two long tines that are bent to hold it in place.

Are Split Pins strong?

Split pins may be simply designed and affordable, but they are also surprisingly strong and durable. In fact, their extreme strength is one of the reasons these pins are commonly used in applications in which heavy vibrations are common.

How a split pin is used to lock a nut?

The stub axle has a hole drilled through it, and once the nut is tightened to the correct torque, the split pin is inserted through the hole between the tabs on the nut. The ends are then bent backward to lock the pin and prevent the castellated nut from loosening.

Are cotter pins strong?

Materials for Cotter Pins It is a strong material and is corrosion resistant. Stainless steel cotter pins aids in protection against corrosion and oxidation.

What is a clevis fastener used for?

Clevis pins are used as a quick and secure fastener in place of bolts and rivets. Designed with both a flat or domed head on one end and cross-hole at the other, a clevis pin is inserted through the holes at the pronged ends of a clevis and is kept in place by a cotter pin.

What are Cotter rings used for?

Circular Cotter Rings are often used to secure clevis pins and turnbuckles or rigging screws. Cotter Rings are reusable and often used in place of straight cotter pins that must be bent to hold firmly.

Are cotter pins one time use?

Cotter pins can be made from several different materials that are soft enough to bend. Typically, when deforming the pin once, the pins keep their strength and provide a strong locking mechanism that can be relied on. As a general rule, cotter pins should not be reused as the extra bending weakens the pin.

Who invented the split pin?

Ira J. Young
Ira J. Young invented the cotter pin in 1912 in St. Louis, Missouri. He “applied for a patent on a machine for forming split pins,” later referred to as cotter pins.

For which nut split pin is required for locking?

Slotted/Castle nut: It consists of a hexagonal portion with a cylindrical upper part which is slotten inline with the center of each face. The split pin passes through two slots in the nut and a hole in the bolt so that a positive lock is obtained unless the pin shears.