Brass insert nut; OEM from China; Certification:ISO14001 ISO9001 SGS Specifications Round slotted nut Process Capablilities Standard ISO, GB, DIN, JIS, ANSI, BSW, ASMEGrade ... 3.6, 4.6, 4.8, 5.6 ... , 6.8, 8.8, 9.8, 10.9, 12.9 etc.Size M0.8~M12Material Stainless, Steel,Brass ...