Specifications include, but are not limited to: MANUFACTURERS A. Steel Sections: ASTM A36. B. Steel Tubing: ASTM A500, Grade B. C. Steel Pipe: ASTM A53, Grade B, Schedule 40 as indicated. D. Steel Rod: ASTM A510. E. Fasteners: 1. Bolts, Nuts, and Washers: ASTM A307. 2. Lag Bolts: Square head type, FS FF-B-561. 3. Wood screws: Flathead carbon steel, FS FF-S-111. 4. Machine screws: Cadmium plated steel, FS FF-S-92. 5. Plain washers: Round carbon steel, FS FF-W-92. 6. Lock washers: Helical spring type carbon steel, FS FF-W-84. 7. Expansion Bolts: Parabolts, or acceptable substitute. F. Welding Materials: AWS D1.1; type required for materials being welded. G. Primer: FS TT-P-31, for shop application and field touch-up. H. Touch-up Primer for Galvanized Surfaces: FS TT-P-645. I. Protective Coating: Non-fibrated aluminum paint conforming to ASTM D1187, Type A. J. Stainless Steel Plate: ASTM A167, Type 304.
