APL BL-350
3-1/2" STEEL CONDUITS
Appleton Locknut is made of steel for added durability and strength. Locknut has trade size of 3-1/2 inches. It measures 4.81 Inch diameter x 0.38 Inch. It is designed to secure an ordinary nut from working loose by locking itself when screwed down tight. Locknut is UL listed, NEMA rated and CSA certified.