Solid Tungsten Round – 3.25 ounces


One solid tungsten round weighing 3.25 ounces. 1 inch diameter, 3/8 inch thick. This tungsten round is sliced from a solid rod of tungsten and is used for pinewood derby weighting.

23 in stock


Product Content

One solid tungsten round weighing 3.25 ounces(1)

Product Specifications

Diameter - 1 inch

Thickness - 0.370 inch (approximately 3/8 inch)

What is Tungsten?

Tungsten is a metal with one of the highest densities. Tungsten is 1.7 times more dense than lead, 2.4 times denser than steel, and 2.7 times denser than zinc.

From Randy:
"Solid Tungsten! Most tungsten products are molded from tungsten powder using high pressure and heat. This process, known as "Sintering", typically results in a density of about 18.1 g/cc. However, our tungsten round is sliced from a solid rod of tungsten. So the round is the full tungsten density of 19.2 g/cc!"

How to Use this Product

A Tungsten Round can be easily used for pinewood derby car weighting if the weight of the car body, wheels, and axles is less than 1.75 ounces. Drill a 1-1/16 inch diameter hole into the bottom of the car body, and then epoxy the Round into the hole.

Since the Tungsten Round is very hard, do not plan to drill out any extra weight. Instead, use an alternate method to make fine adjustments such as adding/removing tungsten putty, beads, etc. In the photo, 3/16 inch tungsten cubes would be used.

(1)3.25 ounce nominal weight - actual weight ranges from 3.22 to 3.28 ounces

Need a drill bit for the Solid Tungsten Round? Click Here for the 1-1/16 inch Forstner Bit.

Additional information

Weight 3.5 oz