Uxcell 50-Pack M3 X 0.5 Nylon Insert Lock Nuts – 316 Stainless Steel, Self-Locking, Silver & Blue, For Industrial & Home Fastening

About This Product

These uxcell nylon insert lock nuts are the kind of fasteners you reach for when you absolutely don't want a bolt backing out.
They're M3 x 0.

5 thread size with a nylon ring inside that grips the bolt threads and creates friction—so vibration, movement, or everyday use won't shake them loose.
Made from 316 stainless steel with a wash white finish, they're tough against rust and corrosion, even in damp or outdoor conditions.

Each nut has a hex width of 5.

3mm and a height of 4mm, and they thread on smooth.

Just run the bolt in with a wrench until snug—don't overdo it, or you could strip the nylon insert.

The pack gives you 50 pieces, which is plenty for a project or to keep stocked in your parts bin.

They work on furniture, appliances, automotive parts, machinery, or construction framing.

They come in a silver and blue color combo—easy to spot if you drop one.

Reliable, reusable a few times (the nylon does wear eventually), and built for the long haul.
A solid choice for any serious fastener collection.