RTA-1 Series nautical flags Thread Length: 2-3/8"

Thread Length: 2-3/8"

and the pole does not have a threaded top plug installed

First adopted in 1865

SIZE 3 - Size 3 substitute flags are 1-1/3' x 2-1/3' in size

RTA-1 Series nautical flags Thread Length: 2-3/8"For external halyard poles Threaded, Revolving, Single pulley Construction: Cast aluminum Pulley: 1 1 2" outside diameter machined aluminum on 1 4" stainless steel axle Max halyard diameter: 5 16" Truck Spindle: 1 1 4" NPT threading Flagpole: For up to 3 1 2" outside top diameter pole w female fitting installed Ornaments: Accepts spindle threading of 1 2" 13NC. Secured by 1 stainless steel screw (Size 1 4" 20NC) Movement: Utilize self lubricating ball