Weld Mount AT-3B Small Black Nylon Wire Tie Mount - Qty. 500 [803500B]AT 3B Small Black Nylon Wire Tie Mount Qty. 500 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". Average pull strength is about 50 lbs. The square base measures . 44" 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