Used on door, stores elevator. 3b thread class right-hand 20 thread quantity per inch nut, self-locking, hexagon (MS17829Z4c mod) note 1221 item contains the hazardous material chromium metal and/or compounds zinc nut surface treated
Used on 2350-01-577-0830. 2b thread class right-hand 11 thread quantity per inch nuts, hex flat jam material astm A563 gr a K05802 zinc surface treated