Square Steel Pole Catalog #View All Wall Bolt Circle Anchor Bolts Max EPA80mph w/1.3 gust Max FixLbs Max EPA90mph w/ 1.3 Gust Max FixLbs Max EPA100mph w/1.3 Gust Max FixLbs Pole WtLbs GSQ410 .120 9-1/2" 3/4"x 24"x3" 28.5 655 22.0 506 17.0 391 91 GSQ412 .120 9-1/2" 3/4"x 24"x3" 21.0 500 15.0 345 12.0 276 105 GSQ415 .120 9-1/2" 3/4"x24"x3" 12.6 300 9.6 225 6.6 180 125 GSQ418 .120 9-1/2" 3/4"x24"x3" 11.5 287 8.5 212 6.0 150 150 GSQ420 .120 9-1/2" 3/4"x24"x3" 9.6 240 6.5 195 4.5 112 175 GSQ424 .120 9-1/2" 3/4"x24"x3" 4.5 112 3.0 75 1.0 25 238 GSQ520 .120 9-1/2" 3/4" x 24" x 3" 13.5 337 10.5 250 6.6 165 191 GSQ524 .120 9-1/2" 3/4" x 36" x 3" 9.8 245 6.5 185 3.7 150 231 GSQ530L .120 9-1/2" 3/4" x 36" x 3" 4.7 150 2.5 65 -- -- 275 GSQ530 .188 9-1/2" 3/4" x 36" x 3" 7.6 190 4.5 135 1.8 50 398 GSQ630 .188 12-3/4" 1" x 36" x 4" 16.4 410 12.4 345 7.4 185 470 GSQ640L .188 12-3/4" 1" x 36" x 4" 5.6 150 2.5 75 -- -- 615 GSQ640 `.250 12-3/4" 1" x 36" x 4" 9.5 235 4.5 110 1.5 35 815