Change inch threads to metric with these adapters, or swap metric threads for inch. An external hex lets you tighten or loosen them with a wrench.

Need to join two female-threaded parts, such as coupling nuts, with dissimilar inch thread sizes? Attach them to these adapters and tighten the exterior hex nut for a secure connection.

Connect two differently sized male-threaded parts, such as threaded rods, and tighten with a standard wrench.

The strongest key-locking inserts we offer, these inserts are made to stringent military specifications.

Protect threads from debris and leaks—these inserts have a closed end as a barrier.

Forming the strongest hold of any of our threaded inserts, these inserts have a distorted internal thread to lock screws into place and keys that drive into surrounding material to prevent slipping and rotating.