Stripped or damaged threads in an equipment housing or junction box mean a part that won't seal, won't mount, or won't hold — and often means replacing the whole assembly. This 3/8-16 NC (National Coarse) SAE steel tap plug restores the thread in the hole so the original fastener can do its job again, saving the assembly. The 3/8-16 size is common in equipment junction boxes, motor housings, and plate mountings. NC coarse threads are the standard thread form in most US equipment manufacturing. Standard in the repair kits of equipment mechanics and industrial maintenance crews across northeast Nebraska and northwest Iowa. In stock at Crofton Lumber (Crofton, NE) and Akron Lumber (Akron, IA) — ready for pickup today. Stocked at Crofton Lumber and Akron Lumber.