Each locking device includes:
HEX Head Cap Screw
Flat Washer
Lock Bar
Locking device for POLYCAST 500 series with flat head screw for ductile iron grates with frames. Part# DA0542BH
Each locking device includes:
3/8-16 X 2-1/2" HEX Head Cap Screw
3/8" Flat Washer
1" X 4.88" (123.83 mm) Lock Bar
Grates need to be locked in place in situations where there's a possibility they will be driven over, preventing the grates from hopping. It also prevents debris from working in between the grates and channels which can ultimately damage the grates. This helps to provide system integrity when used appropriately.