Ziath reports how its 2ml CryzoTraq™ 2-ECT storage tube maintains high sample integrity by minimising the chance of cross-contamination as their externally threaded design eliminates the possibility ...

Externally threaded fasteners with locking devices use the same techniques as locknuts. Prevailing-torque locking screws employ distorted threads, interference fits, inserts, or a chemical adhesive ...

Inserts are classified as two general types: those held in place by external threads and those that use some means other than threads (knurls, grooves, interference fit) for their holding power.