Black Nylon Wire Tie Mount The AT-3 tie mount is smaller for panel and other small space applications. This part is molded in black nylon and is sized for a #3 wire tie with a maximum width of .20 in. . Average pull strength is about 50 lbs. The square base measures .44 in. wide. Use this smaller wire tie for runs with only a few wires or where space prevents use of our larger tie mounts. Excellent for mounting compass wires on center console boats and for overhead panel runs.