A-A-52033A
size and shape. Precautions shall be taken to avoid overheating, and heated metal shall be allowed to cool slowly.
2.3.10 Bolted and riveted connection. Bolt and rivet holes shall be accurately punched or drilled and shall have the burrs removed. Washers, lock washers, or lock nuts shall be provided where necessary, and all bolts, nuts, and screws shall be tight. Rivet heads, when not countersunk or flattened, shall be uniform in size and shape for the same diameter of rivet concentric with the rivet holes, and in full contact with the surface of the member.
2.3.11 Placard holder. Four stainless steel placard holders conforming to Department of Transportation (DOT), Bureau of Explosives (BOE) 6000, part 172, appendix C, shall be provided (see 7.2.5). One placard holder shall be located on each end and each side of the container. Placard holders shall be permanently attached and shall be located a minimum of
3 in. (7.6 cm) away from all other container markings.
2.3.12 Surface preparation. All steel components both inside and out, shall be abrasively blasted to a near white per the Society for Protective Coatings (SSPC) Guide-10 (see 7.2.6). Equivalent chemical cleaning may be proposed. The cleaned surface shall be free from oil, grease, dirt,
mill scale, rust, corrosion products, oxides, paint or any other foreign matter. Very light shadows or very slight streaks caused by mill scale, oxides or other slight discolorations on the finished surface shall be acceptable. At least 95 percent of each square inch (6.5 cm2) of surface area
shall be free of all visible residues and the remainder shall be limited to the slight discoloration mentioned above.
2.3.12.1 Primer coat. The primer coat shall be with either organic zinc rich or zinc chromate. and shall contain anticorrosive properties, which shall retard the corrosion of the steel. The primer coat shall be applied to a dry film thickness recommended by the primer manufacturer.
2.3.12.2 Top coat. The top coat shall be compatible with the applied primer coat. The exterior finish color shall be in accordance with FED-STD-595 (see 7.2.7), color number 24084
(olive drab) unless otherwise required (see 7.1). Interior finish color shall be light gray or white. The final coating shall be not less than 5.3 mils (135 micons) dry film thickness.
2.3.13 Identification and markings. Identification and markings shall be permanent and legible and shall include as a minimum, the manufacturer's identification code (CAGE), the contract number and the part number (see 7.1).
2.3.13.1 Interior marking. The owner's code and serial number shall be stamped or bead welded in characters not less than 1/2 in. (12.7 mm) high on the interior surface of the left side top rail (see 7.1). The number shall be located within an area of 18 in. (45.72 cm) from the left vertical frame member where it will not be obscured.
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