This 50‑piece pack of M3 square nuts is precision made from 304 stainless steel, offering rust resistance for indoor and outdoor use. The square profile prevents spinning when embedded in wood, plastic, or 3D printed slots – no glue needed.
Material
304 stainless steel resists humidity, condensation, and light rain. Slightly magnetic due to cold forming – normal for this grade and harmless in most applications.
Key Applications
3D Printers: Embed into printed parts for mounting hotends, heater blocks, and filament guides.
Drones & RC: Secure flight controllers, motor mounts, and battery straps inside frames.
Electronics: Create threaded inserts for PCB standoffs, terminal blocks, and lid screws.
Eyeglass Repair: Replace lost hinge screws – the nut fits snugly into plastic frames.
Outdoor Camera Rigs: Attach plates and mounts on weather‑exposed gear.
Installation
Cut a square hole slightly smaller than the nut's outer dimension (approx 5.5mm). Press in with a vise or hammer – the sharp corners bite into the material, locking the nut when you tighten the bolt. No special tools required.
Who It's For
Hobbyists, repair technicians, and prototyping engineers. The compartment box keeps all 50 nuts organized – no extra storage needed. Works with any M3 machine screw (0.5mm pitch, coarse thread).