T-nuts 50pc deluxe 1/4x20

These aren't your typical hardware store t-nuts. These have extra long 9/16" shanks and six extra sharp teeth to hold securely in even the most difficult materials! Great for mounting larger size speakers and speaker grills, plus hundreds of other uses.

These are designed for 1/4-20 screws and require a 5/16" diameter hole.

Sold in fifty piece sets.