DuBro Threaded Insert, 4-40 DUB391

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DuBro Threaded Insert, 4-40 [DUB391] These brass threaded inserts are the perfect way to put threads into wood and mount engines to wood mounting rails. Threaded inserts make a sim ple and effective way to make wing hold downs. Can be used where blind nuts are hard to fit. Key Features: simple and effective Can be used where blind nuts are hard to fit. 4 per package Show more