Suitable for mounting on the bottom of the nut or bolt head without flat washers, with different heights available for pipe flanges, bolts and nuts for mechanical equipment (patent).
Our SDSW-1 conventional series of bolts and nut protection cap, bolt and nut rust cover, screw protective cover, nut protective cover, to prevent the bolt rust protection cap, reusable bolt nut protection cap, is to protect the bolt head And the design of the Division I bolts protective cap, nut protective cover, nut protective cover, nut sheath, bolt anti-rust cover, nut protective cover of the inner wall with the nut hexagon can produce interference with the nut so that the nut can be effectively covered by butter And will not squeeze the butter out of the protective cap during maintenance.
