Wide Base Clamp Pin. Hot dip galvanized, made of open hearth steel, drop forged in one piece that is free of any welds that would weaken the forging. Broad base distributes the load while the formed saddle combined with the clamp assembly or strap insures that the pin will not slip or twist once it is mounted. For crossarm size: 3 3/4 x 4 3/4". Also fits 3 5/8" x 4 5/8" REA Standard crossarm. Nylon Thread: 1", Std. Pkg.: 5, Wt., Lbs.: 4.9