Nice 10 piece lot of a quality round SO-239 female UHF chassis connector with nut, solder tab and, washer for panel mounting. One of the best quality imported I've seen. Nickel-plated, gold center pin and solid construction. Delrin dielectric. 
One year warranty by wiredco.com. 

SPECIFICATIONS:
* Voltage rating: AC 500V
​* Withstanding voltage: AC 1,000V one minute 
​* Insulation resistance:1,000M min at DC 500V
​* Contact resistance: 3m max at DC 1A
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