Fastener Hex Bolt

Is a hex bolt the same as an Allen bolt?

A hex bolt and an Allen bolt are not exactly the same, but they are related.

A hex bolt, also known as a hex head bolt, is a type of fastener that has a six-sided head, typically with a threaded shaft that is inserted through a hole and tightened with a nut. The hex head is usually turned with a wrench or pliers.

An Allen bolt, on the other hand, is a specific type of hex bolt that has a hexagonal socket in its head, which allows it to be turned with an Allen wrench (also known as a hex key). Allen bolts are also known as socket head bolts or Allen head bolts.

So while all Allen bolts are hex bolts, not all hex bolts are Allen bolts.

Fastener Hex Bolt