General description These M3 Thread Knurled Brass Threaded Heat Set Resistant Insert Embedment Nuts are designed for use in 3D printing and injection molding applications. They provide a secure and reliable fastening solution without the need for counterboring or countersinking, thanks to their guide pilot feature. Technical specifications Quantity: 400 nuts Size: M3X5X4 Material: Brass Color: Gold Measurement allowed error: +/- 1-3 cm Installation Can be installed using ultrasonic or heat methods. Can be molded in during the injection process. Designed for easy installation without the need for back-drilling or counter-sinking. Other information