Weld Mount AT-5B Large Black Nylon Wire Tie Mount - Qty. 500 [805500B]AT 5B Large Black Nylon Wire Tie Mount Qty. 500 The AT 5 tie mount is designed to be set into wet resin during the hull lay up or bonded with our acrylic adhesives. It's designed for a #5 wire tie and has an average pull strength of 150 lbs. It's approved for submerged bilge applications. Stop putting plywood in your hull just to have a place to drive wire tie screws. Saves material and labor costs!