Injection Molding Brass 3mm Thread Knurled Inserts Nuts 5mm x 4mm Product Name : Knurl Thread Inserts;Color : Brass Tone Mateiral : Brass;Inner Thread Diameter : 3mm / 3/25" Outter Diameter : 5mm / 1/5";Total Height : 4mm / 5/32" Weight : 4g Package : 10 x Knurl Thread Inserts