Hitefu 110-Pack M4 X 0.7mm Hex Lock Nuts – Black Carbon Steel Nylon Insert Non-Slip Self-Locking Fasteners

About This Product

Hey fixer-upper!
If you're tired of nuts coming loose under vibration, these Hitefu M4 lock nuts are your new go-to.
This pack comes with 110 pieces – that's a ton of nuts for all your projects.
They're M4 size with a 0.

7mm pitch, 5mm tall, and 7mm wide – a standard fit for many bolts and threaded rods.
Made from carbon steel with a black galvanized finish, so they resist rust and handle damp environments like a boss.
The real magic is the nylon insert inside – it grips the threads tight and stops loosening from shakes and torque.
Use them on cars, machinery, furniture, appliances, garden gear, or anything that needs a reliable fastener.
They work with cap screws, bolts, or threaded rods of the same thread size.
Solid quality, durable, and way cheaper than buying individual nuts.

Whether you're a pro mechanic or a weekend DIY warrior, these will save you headaches.
Keep a stash in your toolbox and never hunt for a lock nut again.
Strong hold, long life, and peace of mind – can't beat that!

These nuts are seriously handy.
The nylon insert doesn't just resist loosening – it also prevents thread damage and gives you a consistent clamping force.
The carbon steel body is tough, and the black coating adds a sleek look plus extra protection.

They're easy to install with a standard wrench, and they hold firm even in high-vibration settings like engines or power tools.
With 110 in the bag, you'll have plenty for multiple jobs or repairs.
Great for both indoor and outdoor use – they don't mind a bit of moisture.

The M4 size is super common, so you'll find plenty of uses around the house or shop.

Reliable, affordable, and effective – these lock nuts are a smart addition to any fastener collection.
Stop wrestling with loose connections and get these on your project.
Simple fix, big improvement!