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Made of carbon steel, zinc plating finish, high hardness and corrosion resistance. Using nylon inserts, these lock nuts greatly reduce loosening under vibration and torque.
Used in conjunction with bolts, washers, or screws as fasteners when mechanically joining materials together.
Can be widely used in the machinery industry, instruments, electronic products, garage, home appliances, furniture, ship assembly, etc.
Product Specifications:
Material: Carbon Steel
Finish: Zinc Plated
Color: Black
Thread Size: M3
Thread Pitch: 0.5mm/0.02"
Width: 5.5mm/0.22"
Height: 4mm/0.16"
Package Content:
50 Pcs x Hex Lock Nuts
Mike in PA
2025-08-27 17:28:57
I was in need of some hardware to repair the cutting blade on a Black & Decker hedge trimmer. I believe the OEM hardware is SAE, but I just bought metric which is close enough to the SAE spec. I originally tried a 12 mm bolt but had to use 14 mm to ensure the threads were engaged in the nylon lock nut. I then ground off some threads with an angle grinder. This hardware works great, the only thing I wish is that it would be slightly larger, as I had to use some washers underneath.
DJ
2025-08-25 19:45:22
Not much to say, I wanted black locking nuts and these worked perfectly. Very happy with the look and result.
Bob Fuller
2025-08-18 17:47:01
The fit the M3 bolts that needed nuts. They were scared and could barely hang on to the 3d printed trailer they were in, but now that they have nuts, they are up to the task. The addition of the nylon insert makes the nuts even better at doing their job.
Kanan sciacca
2025-08-16 12:54:58
Been using this brand on hardware for a while, consistent quality. I use it for Rc cars and crawlers and never had an issue. Much better than buying individually at local stores.
JB
2025-07-30 12:11:33
Here nut. It squeeze. Nut be screw by bolt. Make so tight. Hold long time. Is belly gūd.
gmart
2025-07-22 12:10:58
machining was very important here....these fit the bill...
Yuval Scheiner
2025-07-10 10:47:04
Thank you for the fast shipment :-)
Stephen D. Wall
2025-05-10 15:32:52
exactly as advertised, not great, but perfectly good for low-torque, low-tensile needs.
Bwake
2025-04-18 17:14:03
They worked and were as described
Mr. Andy
2025-02-18 11:27:48
just as described in product listing.
Andrew
2025-02-12 13:43:45
The product matched the description. The product works well and suits M5 bolts.
Jon
2025-01-31 14:46:27
These are a perfect fit.
M G
2025-01-24 20:33:46
First things first, let's talk about their dimensions. These M3 Metric nuts have a thread diameter of M3 and a thread pitch of 0.5mm. They measure a width of 5.5mm (or 0.22 inches) and have a height of 4mm (or 0.16 inches). Talk about being compact and cute!They are made of carbon steel and are finished with zinc plating. Why is this important, you ask? Well, it gives them excellent rust, corrosion, and oxidation resistance. So, even if you accidentally leave them out in the rain (we've all been there), these little guys won't let you down.These lock nuts come with a nylon insert that works wonders. It's like having a personal assistant for your nuts. This insert significantly reduces loosening under vibrations and torque after long-term use. So, whether you're working on a project that involves severe shaking or you tend to over-tighten things (no judgment here), these lock nuts have your back.These lock nuts are not picky. They are great for replacing broken or missing nuts in various scenarios. Whether you need to fix that wobbly chair, repair a household appliance, or even get your hands dirty with DIY projects, these lock nuts are up for the challenge. They are also widely used in industries, workshops, engineering machinery, ships, and even handicrafts.
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