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Weights/ Masses

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Weight Hangers

Weight hangers are used in physics experiments and education related to masses, force, pendulum, friction and many more. You can modify the weight or mass of a weight hanger by adding slotted weights to it or removing slotted weights from it.

The slotted masses and weight hanger combination allows a student to quickly create any desired amount of mass, to use in experiments involving force, acceleration, and mass. There are also many other experiments in other fields where a variable hanging mass comes in handy.

Slotted masses and the weight hanger may be ordered separately or as a set. If you are buying weight hangers and slotted masses separately you must make sure that they match each other.

Inserting and stacking weight hangers

Weight hangers may have two different designs. One is inserting design and the other is stacking design. Materials from these two designs are not interchangeable.

Inserting Design:

Inserting style weight hangers are designed so that you can insert or remove a mass from any point along the stem. In this design the diameter of the stem is the same from the top to the bottom. This is called inserting style weight hanger. Almost all aluminum weight hangers have inserting design.

Stacking design:

Stacking style weight hangers are designed so that you can insert or remove a mass only from the top. The stem diameter is narrow on the top to allow inserting masses that have a narrow slot. Although the slot is narrow, the masses for stacking weight hangers have a large hole in the center allowing the mass to move down on the stem. Most brass weight hangers are stacking style weight hangers. In other words the stem is wide and the hook and upper part of the stem are narrow.

All masses and the hanger may be ordered separately.

Aluminum Weight Hangers

Aluminum weight hangers require special slotted weights with 5 mm open slots. Aluminum weight hangers weigh 50 grams and the stem length is 16 cm. The diameter of the stem rod is 4.85 mm. Aluminum weight hangers are inserting type weight hangers and the weights can be entered from the hanger side.

All masses and the hanger may be ordered separately.

Product Code: WH50A

View price and availability of aluminum weight hangers

Brass Weight Hanger WH50B

This brass weight hanger has a top hook and a precise weight of 50g that makes this hanger ideal for use with slotted weights. The stacking section of this brass weight hanger is 10 cm (4"). The diameter of the column is 5.9mm in stacking section and it is 2.9mm in hook section.

Stem Diameter: 5.9 mm
Hook Diameter: 2.9 mm
Stem Height: 100 mm
Overall height: 145 mm
This is the most compatible weight hanger for old and new brass slotted weights with stacking design.

Product Code: WH50B

View the price and availability of brass weight hangers

We accept special orders:
Please place your orders online. Most images are linked to the prices and availability information. For special orders please call 973-777-3113.

Distributors of scientific and educational products

Where to buy?

Most pictures are linked to the pricing and online store for fast and convenient ordering

Our products are available at the following online stores. For large orders please call in advance and verify the availability, wholesale discounts and shipping options. If you cannot find any product in the online store of your choice, please use the search option of the store or call (973)777-3113 for further assistance.


  All orders will be shipped from our warehouse in United States (USA). We ship worldwide to most countries including U.S., Canada, Australia, United Kingdom, New Zealand, Germany, France, Netherlands, and many other countries.

List of metals for science experiments


Slotted Weights

Weight Hangers

Plastic Weights

Slotted Weight Set of 8

Slotted Weight Set of 12

Weight Box

Slotted Weights for Brass weight hanger

Masses with hooks
Set of 9

Set of 5 weights

Slotted Weights for Aluminum Weight Hanger

Slotted Masses for
Brass Weight Hanger


Copyright 2005 MiniScience Inc.