The Bridgeport 1" 163-G Zinc Die Cast Mighty-Bond® Grounding Locknut with Aluminum 14-4 Lug fasten threaded connectors or nipples to box or enclosure. Operators can use these grounding locknuts for bonding connectors inside the box in place of a grounding bushing and locknut. The aluminum lug provides an additional grounding or bonding path. This locknut is perfect for tight locations or fittings with shorter locknut threads. The grounding locknut is ETL listed for use with all Bridgeport Fittings zinc and steel connectors. Mighty-Bond® Grounding Locknuts replace the standard locknut that comes with a Bridgeport Fitting, and no additional locknuts are required. When you need quality electrical fittings for more efficient jobs, look for Bridgeport Orange.