Standard: ISO, hard GB, DIN, JIS, ANSI, BSW Name: Straight knurling M2.5 M5 M6 Brass round insert nuts for plastic Size: M2, M3, M4, M5, M6, M8, M10, M12, etc. #4-#8,1 8-5 8'' Finish: Zinc plated, passivation, nickle plated Certification: ISO, ROHS, SGS Service type: Drawing sample processing Service: OEM, MDG