Materials:

Screws: 4 each #4-40 x 6.35 (1/4”) Phillips pan head pr MS 35206-213 with blue zinc plating.
Cover: 1.60 (.063) thick aluminum Alloy 1100-H14
Finish: Clear anodized per MIL-A-8625,
Shielded Housing: Die cast aluminum alloy A380 or A384.
Finish: Blue baked enamel per Federal Standard 595 #25109 over primer wash per DOD-P-15328.

Ratings:

Operating Temperature: +150°C. (+302°F.) Max.