category: aluminum bridges

... ( ASTM 8316 Alloy 6061 - T6 ) conforming to the re- quirements of MIL - R - 1150F ; coated high strength steel bolts AASHTO M164 ( ASTM A325 ) or stain- less steel bolts ( ASTM F593 Alloy Group 1 , 2 , or r3 ) . Table XX.2B Material ...