These are Brass Threaded Inserts from Du-Bro.
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. 4 pcs/pkg.
Specifications :
Thread Size : 6-32
Length : 7mm
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