






🔧 Lock it down with confidence — the ultimate nuts for next-level builds!
The BinifiMux 100-piece M3 x 0.5mm lock nuts set features premium 304 stainless steel construction with nylon self-locking inserts, delivering rust-proof durability and secure fastening. Designed for precision applications like RC models and 3D printers, these fully threaded nuts come in a convenient storage case, backed by excellent user ratings and trusted quality.







| ASIN | B075ZZW7VL |
| Best Sellers Rank | #43,617 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #68 in Locknuts |
| Brand | binifiMux |
| Color | Silver |
| Compatible Groove Diameter | 3 Millimeters |
| Customer Reviews | 4.8 out of 5 stars 913 Reviews |
| Drive Style | External Hex |
| Exterior Finish | Plain |
| Fastener Type | Lock |
| Finish Types | Unfinished |
| Grade Rating | Grade 8.8 / A2-70 |
| Inside Thread Size | M3 |
| Item Diameter | 3 Millimeters |
| Manufacturer | binifiMux |
| Material | Nylon, Stainless Steel |
| Material Type | Nylon, Stainless Steel |
| Metal Type | Stainless Steel |
| Number of Pieces | 100 |
| Size Name | M3 |
| Thread Class | ISO |
| Thread Coverage | Fully Threaded |
| Thread Size | M3 x 0.5 |
| Thread Style | Right Hand |
| Thread Type | Metric 3mm |
| UPC | 613852252062 |
K**.
Reliable and Effective
I recently purchased the 100-piece set of M3 x 0.5mm 304 Stainless Steel Self-Lock Nylon Inserted Hex Lock Nuts for a project, and they have performed admirably. These lock nuts are well-constructed, showcasing both the durability and quality I was looking for. The locking capability of these nuts is quite decent. The nylon inserts provide a good grip and ensure that the nuts stay in place once tightened. This feature gives me confidence in the security and stability of the connections in my projects. Additionally, the stainless steel material adds an extra layer of durability, making these nuts suitable for various applications where strength and longevity are required. Overall, I'm satisfied with these hex lock nuts. They are effective, reliable, and offer good value for the price. For anyone in need of quality self-locking nuts for their DIY or professional projects, I would recommend giving these a try.
J**4
Excellent AAA+++++
Excellent AAA+++++
G**E
Tiny, but effective ...
I purchased SS machine screws to fix a problem with my golf bag. One of the pins holding one of the folding legs fell out. I needed a self-locking nut because I couldn't tighten the fastener all the way as it would cause the leg to bind. Thus, a nylon insert self-locking nut seemed to be the best option. You receive a small container of nuts ... I was surprised how small the container was. Anyway, I just needed one but now I have an almost "infinite" supply.
M**G
Good Quality
Good Quality Stainless Hardware, not sure else what to say.
T**L
Good quality would buy again
Little stainless steel bolts they are not magnetic so they’re not a low-grade stainless. That’s generally how you can check if a bolt is a low quality stainless it’ll be very magnetic when stainless steel should be non-magnetic
A**G
FMS Axles
Bought these to use for my furitek Cayman Pro and the other FMS axles shiny chrome has nylon insert to keep it in place very good quality and quantity.
C**Y
Great quality, works as expected
Great quality, works as expected
W**R
Great value for quantity
You get a nice amount of nuts for the price and they have a nice amount of lockening torque if that’s what you want to call it, not too tight but loose enough to get it in there without a hassle
TrustPilot
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