These are Great Planes Brass Threaded Inserts (6-32).FEATURESBrass constructionThe perfect way to put threads into wood and mount engines to wood mounting rails. Threaded inserts make a simple & effective way to make wing hold downs.Can be used where blind nuts are hard to fitComes in a Parts-Pak clear plastic box with resealable lidINCLUDES(4) Threaded InsertsSPECIFICATIONSThread Size: 6-32Length: 5/16"Diameter: 7/32" OD overall5/32" OD of main bodyCOMMENTSPackage says it threads into a ¼" hole. But it threads into a 3/16" diameter hole that is 5/16" deep.
minicars