These are Brass Threaded Inserts from Du-Bro.
- 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.
(4) Threaded Inserts
- Thread Size: 4-40
- Length: 7mm
Used with permission, copyright 2018 Dubro RC/Tower Hobbies, Inc. Copyright 2018 Brey Corp. t/a Hobby Works.