Materials:

Screws: (8) 4-40 x 6.35 (.25) Phillips, Pan Head – Steel
Finish: Zinc Plated
Cover: 2.03 (.080) Thick aluminum, Alloy 1100-H14
Finish: Clear anodized per MIL-A-8625.
Shielded Housing: Die cast aluminum, Alloy A380 or A384.
Finish: Blue paint per Federal Standard 595, Color No. 25109.