Lock bolt collars are designed for use with lock bolt rivets, which are available separately. They help to hold the rivet to the item being fastened.
Lockbolt system is a two piece fastener consisting of a lock bolt and lock bolt collar. The lockbolt is placed through the work and the collar is placed over the end of the lockbolt. Using the proper tool the two are swagged together and the lockbolt is broken off flush with the collar. This fastener has exceptional clamp-up force, shear and tensile strengths.
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