... ISO,JIS&ANSI,GB,BS 2.Size of hex thin nut:M3-M80 3.zp.black hdg finish 4. ... iso rohs certificat hex thin nut1.various kinds sizes of hex thin nut available.2.high quality ... competive price.3.material of hex thin nut:stainless steel ,carbon steel.4.surface treatment:black ... , ISO,JIS& ANSI,GB ,BS6.packing of hex thin nut:general export packing poly bag cartons or according require7 ...