Hex Connection Nuts M3 Copper Connecting Rod Bar Stud Through Hole Long Nuts
◼ Thread Size: M3. ◼ Eg:M3 20mm=Internal Tooth 3mm Length (L)20mm. Copper Has Excellent Electrical And Thermal Conductivity, Good Toughness, Can Withstand A Certain Degree Of Tensile Strength, Not Easy To Fracture, Connecting Tightly.