Materials:

Connector: 5 ea. BNC Female.
Nominal Impedance: 50 Ohms
Finish: Tarnish Resistant
Screw/Solder Turret: 2 ea. #4-40. Steel
Housing: Die cast Aluminum, Alloy A380 or A394.
Finish: Blue paint per Federal Standard 595, #25109 over Phosphoric etch
Marking: POMONA ELECTRONICS, CALIF.
Cover: 16.0 (.063) thick Aluminum Alloy 1100-H14 pr QQ-A-250/1.
Finish: Clear Anodized
Screw: 4 ea. #2-32 x ¼” pan head, self-tapping. Steel

Ratings:

Operating Temperature: -55°C. to +150°C. (-67°F. to +302°F.)