... ,ISO Certificate 4.Surface treatment:Plain or as request High quality brass nut 1. Standard:DIN,ANSI, BSW, JSB ans ISO ... standard or non-standard as request&design.2. Material: brass, copper3. Grade: as request4. Dimension: M4~M100 or ... treatment: plain7. professional manufactuer, offers better quality and price ProductHigh quality brass nut Materialbrass, copper FinishPlain or as request SizeM4~M60 ...