Clevis Fasteners and Their Uses

 

A clevis fastener is a U-shaped or hook shaped fastening device that contains two holes to hold a pin in its position. The two holes of the clevis fastener are on the two prongs and exist in the open space, thus supporting the use of a pin. When the clevis is positioned appropriately, the pin is easily inserted through the two holes.

 The clevis pin has three distinct parts:

-          Clevis: This is the main U-shaped portion of the clevis fastener.

-          Clevis pin: The clevis pin is used to hold the tang in its place.

-          Tang: In its most basic sense, a tang is a pin that rests between the prongs of the clevis.

Some clevis fasteners also have a split pin that secures the clevis pin.

A clevis pin resembles a bolt in appearance, but is distinguished by the fact that it is either unthreaded or partially threaded with a cross hole to secure itself. This is because it doesn't have to attach itself to or be inserted into any material. It simply holds something in place. A threaded clevis pin is more secure in that it allows itself to be at least partially fastened screwed into the clevis.

 There are a few different types of clevis fasteners:

1. Shackle: This is the most common form of a clevis fastener, and consists of the clevis, the clevis pin, and the tang.
   
   
2. Bracket: A bracket is a fastener with a rectangular shaped body with holes for other fasteners like bolts or screws.
   
   
3. Clevis hanger: These contain two clevises. One is a conventional U-shaped shackle and the other is a V-shaped clevis, both of which are connected by a clevis pin or a similar fastener.
   
   
4. Clevis rod: This is a machine formed fastener with a threaded hole which is sturdier than other clevises.

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