Metallics MSNR3816SS Nut 3/8-16 Spring Nut 316-SS (50pcs)

The MSNR3816SS spring nut is threaded 3/8-16, so it pairs with 3/8 inch bolts and rod cut to the 16 thread-per-inch pitch. Run the wrong pitch 3/8 hardware at it and it will cross-thread, so match the bolt pitch before you hang anything off it.

It's 316 stainless steel, the marine grade, which is the one specifiers call for on coastal, wet, and chemical-exposure work where 304 or plated steel would rust out. For dry interior strut runs it's more corrosion resistance than you need, but it's the right call for rooftop, exterior, water treatment, food plant, and parking structure work.

Fifty pieces per pack. That's a single order line for a run of strut rather than counting out singles, which matters if you're an MRO or electrical stockroom buyer standardizing on 3/8-16 stainless strut hardware across a facility.

A spring nut drops into the open slot of channel strut and the spring holds it in position against the channel lips while you start the bolt, so it won't fall into the strut when you're working overhead. The Metallics MSNR3816SS is the 3/8-16 version in 316 stainless, used for hanging conduit clamps, pipe straps, trapeze hangers, and equipment brackets off strut.

Pick by environment, not by habit. The 316 stainless MSNR3816SS is for exterior, marine, wash-down, and corrosive atmospheres. Inside a conditioned building, an electro-galvanized or zinc-plated 3/8-16 spring nut does the same mechanical job for less. Mixing them matters too: hanging stainless off galvanized hardware in a wet location gives you dissimilar metal corrosion, so keep the fastener family consistent through the hanger assembly.

No. It's the nut only, fifty to a pack. You supply the 3/8-16 bolt or threaded rod, plus any washers and the conduit clamp or strap you're fastening, and for a 316 stainless installation you want the bolt in 316 as well so the whole joint matches.