4 Inch Stainless Steel Mirror Finish Ball Flagpole Ornament 1/2 Inch-13NC Spindle Thread 330041

4 Inch Stainless Steel Mirror Finish Flagpole Ball Ornament

A 4 inch stainless steel mirror finish ball ornament for the top of an outdoor flagpole, with 1/2 Inch-13NC spindle threading. Part number 330041, model SS104.

Will this size fit my flagpole?

Match the ball to the BUTT DIAMETER of your pole, not its height. The butt diameter is the width of the pole at the bottom, where it comes out of the ground or the shoe. The accepted rule across the flagpole trade is that the ball diameter should equal the butt diameter, and this 4 inch ball is sized for a 4 inch butt diameter — common on 20 to 25 foot residential and light commercial poles.

If you are not sure, measure across the base of the pole with a tape or a set of calipers. Getting it right matters visually — a ball much smaller than the pole looks like a knob, and one much larger looks top-heavy.

Will it thread onto my pole?

This ornament screws into the flagpole truck, the fitting at the very top of the pole, on 1/2 Inch-13NC threading. Across the industry, 2 through 8 inch balls use 1/2 Inch-13NC and 10 and 12 inch balls use 5/8 Inch-11NC, so if you are replacing a ball of the same diameter the thread will almost always match. Unscrew the old ornament and check the stud before you order if you want to be certain.

If your pole has no truck drilled for an ornament, you will need a pole top adapter as well. The spindle is long enough to take a disc-style solar or LED flagpole light between the truck and the ball if you light your flag at night.

About the stainless steel mirror finish finish

Type 304 stainless polished to a mirror. It is the brightest ornament available and holds that brightness in salt air and industrial atmosphere where aluminum finishes would dull. It does show water spotting, so it rewards a site where somebody will occasionally wipe it down.

Best for coastal and industrial sites where maximum brightness matters.

Specifications

Total Spindle Length: 2-1/4 Inches (approximate)

Non-Threaded Part of the Spindle: 1 Inch

Spindle Threading Length: 1-1/4 Inches

Ball Size: 4 Inch Diameter

Recommended Pole Butt Diameter: 4 Inch

Spindle Threading: 1/2 Inch-13NC

Color: Stainless Steel Mirror Finish

Material: Stainless Steel

Model: SS104

Part Number: 330041

Item Weight: 1.5 lb

Made in the USA.