Dubro 391 Threaded Insert 4-40 (4)

FEATURES: Brass threaded inserts. The perfect way to put threads into wood & mount engines to wood mounting rails. Threaded inserts make a simple & effective way to make wing hold downs. These can be used where blind nuts are hard to fit.

INCLUDES: (4) Threaded Inserts

SPECS: Thread Size: 4-40 Length: 7mm