«Product Description» Brand: uxcell Material: Brass Fastener Type: Knurled Nut, Insert Nut M3 Exterior Finish: Brass Metal Type: Brass Quantity: Approximately 50 pieces It seems to be M3 size, but it's unclear if the M3 size matches the following measurements (т-т) [Size] Thread Length: Approximately 3mm (The ruler isn't precise, but it's slightly less than 3mm) Outer Diameter: Approximately 5mm Inner Diameter: Approximately 3mm ✳️ I took photos with magnification, please check them. [Material] Made of brass, excellent rust resistance, thermal conductivity, and heat resistance, allowing for long-term use. [Features] Can be installed in threaded tapered holes by ultrasonic or heat, or molded during injection molding. [Advantages] The insert has a guide pilot, so there's no need to countersink or counterbore the boss hole. [Applications] Widely used for fastening injection molding. Feel free to comment with any price negotiations or questions you may have ٩( ´ω` )و ----------------------✄ □ One-of-a-kind item, first come, first served! □ Discount available for bulk purchases☆ □ Silent purchase and late-night purchases are welcome ♪ □ Please take a look at my profile ( . .)" ----------------------✄ Rust resistance, Thermal conductivity #Nimo〃Other Items 6-32