Hanging Test Weights

The top hook lets you attach these weights to hanging scales, and the bottom hook lets you connect multiple weights in a series. The bottom hook can also retract into the weight for use with bench-top scales. Weights are marked with their weight.
For technical drawings and 3-D models, click on a part number.
Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
1 oz. | -0.0001 oz. to 0.0001 oz. | 5/8" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 0000000 |
2 oz. | -0.0002 oz. to 0.0002 oz. | 13/16" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
4 oz. | -0.0004 oz. to 0.0004 oz. | 1" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
8 oz. | -0.0007 oz. to 0.0007 oz. | 1 1/4" | 4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
1 lbs. | -0.0001 lbs. to 0.0001 lbs. | 1 5/8" | 4 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
2 lbs. | -0.0001 lbs. to 0.0001 lbs. | 2" | 5" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
5 lbs. | -0.0004 lbs. to 0.0004 lbs. | 2 5/8" | 6 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
10 lbs. | -0.0007 lbs. to 0.0007 lbs. | 3 1/2" | 6 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
20 lbs. | -0.0011 lbs. to 0.0011 lbs. | 4" | 9 3/16" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
1 kg | -0.0001 kg to 0.0001 kg | 2" | 5 3/8" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
2 kg | -0.0002 kg to 0.0002 kg | 2 5/8" | 5 9/16" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
5 kg | -0.0005 kg to 0.0005 kg | 3 3/4" | 6 3/8" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
Hanging Test Weights with Calibration Certificate

The included certificate of calibration traceable to NIST states that these test weights have passed a test for accuracy. The top hook lets you attach them to hanging scales, and the bottom hook lets you connect multiple weights in a series. The bottom hook can also retract into the weight for use with bench-top scales. Weights are marked with their weight.
For technical drawings and 3-D models, click on a part number.
Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
1 oz. | -0.0001 oz. to 0.0001 oz. | 5/8" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 0000000 |
2 oz. | -0.0002 oz. to 0.0002 oz. | 13/16" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
4 oz. | -0.0004 oz. to 0.0004 oz. | 1" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
8 oz. | -0.0007 oz. to 0.0007 oz. | 1 1/4" | 4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
1 lbs. | -0.0001 lbs. to 0.0001 lbs. | 1 5/8" | 4 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
2 lbs. | -0.0001 lbs. to 0.0001 lbs. | 2" | 5" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
5 lbs. | -0.0004 lbs. to 0.0004 lbs. | 2 5/8" | 6 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
10 lbs. | -0.0007 lbs. to 0.0007 lbs. | 3 1/2" | 6 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
20 lbs. | -0.0011 lbs. to 0.0011 lbs. | 4" | 9 3/16" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
1 kg | -0.0001 kg to 0.0001 kg | 2" | 5 3/8" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
2 kg | -0.0002 kg to 0.0002 kg | 2 5/8" | 5 9/16" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
5 kg | -0.0005 kg to 0.0005 kg | 3 3/4" | 6 3/8" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
Legal-for-Trade Hanging Test Weights with Calibration Certificate

To ensure reliable calibration of legal-for-trade scales, these test weights come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. The top hook lets you attach them to hanging scales, and the bottom hook lets you connect multiple weights in a series. The bottom hook can also retract into the weight for use with bench-top scales. Weights are marked with their weight.
For technical drawings and 3-D models, click on a part number.
Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
50 g | -0.01 g to 0.01 g | 13/16" | 2 1/2" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 0000000 |
100 g | -0.02 g to 0.02 g | 1" | 3" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
200 g | -0.04 g to 0.04 g | 1 1/4" | 3 1/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
500 g | -0.07 g to 0.07 g | 1 3/4" | 4 1/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
Legal-for-Trade Hanging Test Weights

Designed for calibrating legal-for-trade scales, these weights have a top hook for attaching to hanging scales and a bottom hook for connecting multiple weights in a series. The bottom hook can also retract into the weight for use with bench-top scales. Weights are marked with their weight.
For technical drawings and 3-D models, click on a part number.
Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
50 g | -0.01 g to 0.01 g | 13/16" | 2 1/2" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 0000000 |
100 g | -0.02 g to 0.02 g | 1" | 3" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
200 g | -0.04 g to 0.04 g | 1 1/4" | 3 1/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
500 g | -0.07 g to 0.07 g | 1 3/4" | 4 1/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |