See Brady Products
Tin Plated Aluminum Dual Rated Mechanical Lug #4 - 500 kcmil - Copper and Aluminum Temperature Rating of 90 Degrees C - Bolt 3/8 inch. Length 2-3/4 inch - Width 1-31/64 inch - Height 1-1/2 inch - Pad Thickness 5/16 inch with One 13/32 inch Diameter Hole -