This lug has a 1/2 in Stud Size, a 0.307 in (7,8 mm) I.D., and a 2.500 in (63,5 mm) length
The 3M™ Scotchlok™ Aluminum One Hole Lug 40025 is for use with copper or aluminum conductors. These aluminum lugs feature color coded end caps for identification. Contact aid provided in the lug barrel is compatible with poly/EPR insulations.
