Metric Test Weights | McMaster-Carr

	Weight Weight

	Shape Shape


Round	Square

	Material Material

Stainless Steel

Iron

Aluminum

	Class Class

	Diameter Diameter

	Height Height

	Width Width

7 5/8"

7 11/16"

	Length Length

4 1/2"

5 1/2"

5 5/8"

	Specifications Met Specifications Met

ASTM

ASTM E617 Class 1

ASTM Class 7 Tolerances

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Number of Pieces Number of Pieces

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Precision Test Weights

30 g to 500 g

1,000 g to 5 kg

Our most accurate test weights, these are often used to calibrate precision scales. They 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	Includes		Each
30 g	-0.00007 g to 0.00007 g	3/4"	5/8"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	0000000
40 g	-0.00007 g to 0.00007 g	3/4"	13/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
50 g	-0.0001 g to 0.0001 g	3/4"	1"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
100 g	-0.00025 g to 0.00025 g	1"	1 1/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
150 g	-0.00038 g to 0.00038 g	1 1/8"	1 3/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
200 g	-0.0005 g to 0.0005 g	1 3/16"	1 9/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
300 g	-0.00075 g to 0.00075 g	1 1/2"	1 1/2"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
400 g	-0.00098 g to 0.00098 g	1 1/2"	1 7/8"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
500 g	-0.0012 g to 0.0012 g	1 1/2"	2 5/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
1,000 g	-0.0025 g to 0.0025 g	2"	2 9/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
2 kg	-0.00001 kg to 0.00001 kg	2 1/2"	3 5/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
4 kg	-0.00098 kg to 0.00098 kg	3"	4 9/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
5 kg	-0.00001 kg to 0.00001 kg	3 1/4"	4 7/8"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000

Precision Test Weights with Calibration Certificate

30 g to 500 g

1,000 g to 5 kg

Often used to calibrate precision scales, these highly accurate test weights come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. They are marked with their weight.

Wt.	Tolerance	Dia.	Ht.	Material	Class	Specifications Met	Includes		Each
30 g	-0.00007 g to 0.00007 g	3/4"	5/8"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	0000000
40 g	-0.00007 g to 0.00007 g	3/4"	13/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
50 g	-0.0001 g to 0.0001 g	3/4"	1"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
100 g	-0.00025 g to 0.00025 g	1"	1 1/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
150 g	-0.00038 g to 0.00038 g	1 1/8"	1 3/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
200 g	-0.0005 g to 0.0005 g	1 3/16"	1 9/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
300 g	-0.00075 g to 0.00075 g	1 1/2"	1 1/2"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
400 g	-0.00098 g to 0.00098 g	1 1/2"	1 7/8"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
500 g	-0.0012 g to 0.0012 g	1 1/2"	2 5/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
1,000 g	-0.0025 g to 0.0025 g	2"	2 9/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
2 kg	-0.00001 kg to 0.00001 kg	2 1/2"	3 5/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
4 kg	-0.00098 kg to 0.00098 kg	3"	4 9/16"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000
5 kg	-0.00001 kg to 0.00001 kg	3 1/4"	4 7/8"	Stainless Steel	1	ASTM E617 Class 1	Glove; Plastic Case	00000000	000000

Legal-for-Trade Test Weights

Calibrate legal-for-trade scales. These test 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 g	-0.0009 g to 0.0009 g	3/16"	1/4"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000
2 g	-0.0011 g to 0.0011 g	1/4"	5/16"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
5 g	-0.0015 g to 0.0015 g	3/8"	3/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
20 g	-0.004 g to 0.004 g	9/16"	11/16"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
50 g	-0.01 g to 0.01 g	3/4"	7/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
100 g	-0.02 g to 0.02 g	1"	1"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
200 g	-0.04 g to 0.04 g	1 1/4"	1 3/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
300 g	-0.06 g to 0.06 g	1 3/8"	1 11/16"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
400 g	-0.07 g to 0.07 g	1 1/2"	1 7/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
500 g	-0.07 g to 0.07 g	1 1/2"	2 3/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
1 kg	-0.0001 kg to 0.0001 kg	2"	2 5/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	00000
2 kg	-0.0002 kg to 0.0002 kg	2 1/2"	3 5/16"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000
3 kg	-0.0003 kg to 0.0003 kg	2 11/16"	4 1/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000
5 kg	-0.0005 kg to 0.0005 kg	3 3/16"	4 7/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000

Test Weights with Calibration Certificate

These test weights come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. They’re used to calibrate scales. All 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 g	-0.0045 g to 0.0045 g	3/16"	5/16"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000
2 g	-0.007 g to 0.007 g	5/16"	5/16"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
5 g	-0.013 g to 0.013 g	3/8"	1/2"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
10 g	-0.021 g to 0.021 g	7/16"	5/8"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
20 g	-0.033 g to 0.033 g	9/16"	3/4"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
50 g	-0.062 g to 0.062 g	3/4"	1 1/16"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
100 g	-0.1 g to 0.1 g	1"	1 1/4"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
200 g	-0.16 g to 0.16 g	1 1/4"	1 1/2"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
500 g	-0.3 g to 0.3 g	1 5/8"	2 1/4"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000
1,000 g	-0.47 g to 0.47 g	2"	2 7/8"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000
2,000 g	-0.75 g to 0.75 g	2 5/16"	3 7/8"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000

Test Weights

Calibrate your scale with these test weights. They 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 g	-0.0045 g to 0.0045 g	3/16"	5/16"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000
2 g	-0.007 g to 0.007 g	5/16"	5/16"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
5 g	-0.013 g to 0.013 g	3/8"	1/2"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
10 g	-0.021 g to 0.021 g	7/16"	5/8"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
20 g	-0.033 g to 0.033 g	9/16"	3/4"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
50 g	-0.062 g to 0.062 g	3/4"	1 1/16"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
100 g	-0.1 g to 0.1 g	1"	1 1/4"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
200 g	-0.16 g to 0.16 g	1 1/4"	1 1/2"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
500 g	-0.3 g to 0.3 g	1 5/8"	2 1/4"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	00000
1,000 g	-0.47 g to 0.47 g	2"	2 7/8"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000
2,000 g	-0.75 g to 0.75 g	2 5/16"	3 7/8"	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000

Precision Test Weight Sets

9-Piece Set

17-Piece Set

21-Piece Set

Use these highly accurate test weight sets to calibrate precision scales. Each test weight is marked with its weight.

Number of Pieces	Includes	Material	Class	Specifications Met		Each
9	Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 g, 20 g Plastic Case	304 Stainless Steel, 316 Stainless Steel	1	ASTM E617 Class 1	0000000	0000000
17	Test Weights (1 each): 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 20 mg, 200 mg, 2 g, 20 g Plastic Case	304 Stainless Steel, 316 Stainless Steel	1	ASTM E617 Class 1	0000000	00000000
21	Test Weights (1 each): 1 mg, 5 mg, 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 mg, 20 mg, 200 mg, 2 g, 20 g Plastic Case	304 Stainless Steel, 316 Stainless Steel, Aluminum	1	ASTM E617 Class 1	0000000	00000000

Precision Test Weight Sets with Calibration Certificate

9-Piece Set

17-Piece Set

21-Piece Set

These highly accurate test weight sets for calibrating precision scales come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. Each test weight is marked with its weight.

Number of Pieces	Includes	Material	Class	Specifications Met		Each
9	Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 g, 20 g Plastic Case	304 Stainless Steel, 316 Stainless Steel	1	ASTM E617 Class 1	0000000	000000000
17	Test Weights (1 each): 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 20 mg, 200 mg, 2 g, 20 g Plastic Case	304 Stainless Steel, 316 Stainless Steel	1	ASTM E617 Class 1	0000000	00000000
21	Test Weights (1 each): 1 mg, 5 mg, 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 mg, 20 mg, 200 mg, 2 g, 20 g Plastic Case	304 Stainless Steel, 316 Stainless Steel, Aluminum	1	ASTM E617 Class 1	0000000	00000000

Test Weight Sets with Calibration Certificate

12-Piece Set

13-Piece Set

14-Piece Set

A certificate of calibration traceable to NIST states that these test weight sets have passed a test for accuracy. Each test weight is marked with its weight.

Number of Pieces	Includes	Material	Class	Specifications Met		Each
12	Test Weights (1 each): 1 g, 5 g, 20 g, 50 g, 200 g, 500 g Test Weights (2 each): 2 g, 10 g, 100 g Plastic Case	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	0000000
13	Test Weights (1 each): 1 g, 5 g, 20 g, 50 g, 200 g, 500 g, 1,000 g Test Weights (2 each): 2 g, 10 g, 100 g Plastic Case	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000
14	Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g, 1,000 g, 2,000 g Test Weights (2 each): 2 g, 20 g, 200 g Plastic Case	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000

Legal-for-Trade Test Weight Sets with Calibration Certificate

12-Piece Set

13-Piece Set

20-Piece Set

Ensure reliable calibration of legal-for-trade scales—these test weight sets come with a certificate of calibration traceable to ASTM that states they’ve passed a test for accuracy. Each test weight is marked with its weight.

Number of Pieces	Includes	Material	Class	Specifications Met		Each
12	Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g Test Weights (2 each): 2 g, 20 g, 200 g Plastic Case	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	0000000
13	Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g, 1,000 g Test Weights (2 each): 2 g, 20 g, 200 g Leather Case	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000
20	Test Weights (1 each): 1 mg, 5 mg, 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g Test Weights (2 each): 2 mg, 20 mg, 200 mg, 2 g, 20 g Tweezer Plastic Case	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000

Legal-for-Trade Test Weight Sets

12-Piece Set

13-Piece Set

20-Piece Set

Calibrate legal-for-trade scales. Each test weight is marked with its weight.

Number of Pieces	Includes	Material	Class	Specifications Met		Each
12	Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g Test Weights (2 each): 2 g, 20 g, 200 g Plastic Case	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	0000000
13	Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g, 1,000 g Test Weights (2 each): 2 g, 20 g, 200 g Leather Case	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000
20	Test Weights (1 each): 1 mg, 5 mg, 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g Test Weights (2 each): 2 mg, 20 mg, 200 mg, 2 g, 20 g Tweezer Plastic Case	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000

Test Weight Sets

12-Piece Set

13-Piece Set

14-Piece Set

Use these test weights to calibrate your scale. Each test weight is marked with its weight.

Number of Pieces	Includes	Material	Class	Specifications Met		Each
12	Test Weights (1 each): 1 g, 5 g, 20 g, 50 g, 200 g, 500 g Test Weights (2 each): 2 g, 10 g, 100 g Plastic Case	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	0000000
13	Test Weights (1 each): 1 g, 5 g, 20 g, 50 g, 200 g, 500 g, 1,000 g Test Weights (2 each): 2 g, 10 g, 100 g Plastic Case	Stainless Steel	7	ASTM Class 7 Tolerances	0000000	000000
14	Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g, 1,000 g, 2,000 g Test Weights (2 each): 2 g, 20 g, 200 g Plastic Case	Stainless Steel	7	ASTM Class 7 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 1/4"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	0000000
100 g	-0.02 g to 0.02 g	1"	2 3/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000
200 g	-0.04 g to 0.04 g	1 1/4"	2 11/16"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000
500 g	-0.07 g to 0.07 g	1 3/4"	3 1/8"	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 1/4"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	0000000
100 g	-0.02 g to 0.02 g	1"	2 3/8"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000
200 g	-0.04 g to 0.04 g	1 1/4"	2 11/16"	Stainless Steel	5	ASTM Class 5 Tolerances	0000000	000000
500 g	-0.07 g to 0.07 g	1 3/4"	3 1/8"	Stainless Steel	5	ASTM Class 5 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 kg	-0.0001 kg to 0.0001 kg	2"	5 3/8"	Stainless Steel	6	ASTM Class 6 Tolerances	0000000	0000000
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

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 kg	-0.0001 kg to 0.0001 kg	2"	5 3/8"	Stainless Steel	6	ASTM Class 6 Tolerances	0000000	0000000
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 Grip-Handle Test Weights with Calibration Certificate

To confirm accurate calibration of legal-for-trade scales, these test weights come with a certificate of calibration traceable to ASTM that states they’ve passed a test for accuracy. They have a handle for easy carrying and are used to calibrate legal-for-trade scales. All are marked with their weight.

Wt.	Tolerance	Lg.	Wd.	Ht.	Material	Class	Specifications Met		Each
10 kg	-0.001 kg to 0.001 kg	4 1/2"	6"	5"	Cast Iron	6	ASTM Class 6 Tolerances	0000000	0000000
20 kg	-0.002 kg to 0.002 kg	5 5/8"	7 5/8"	5 15/16"	Cast Iron	6	ASTM Class 6 Tolerances	0000000	000000
25 kg	-0.0025 kg to 0.0025 kg	5 1/2"	7 11/16"	7 1/8"	Cast Iron	6	ASTM Class 6 Tolerances	0000000	000000

Legal-for-Trade Grip-Handle Test Weights

Designed for calibrating legal-for-trade scales, these weights have a handle for easy carrying. All are marked with their weight.

Wt.	Tolerance	Lg.	Wd.	Ht.	Material	Class	Specifications Met		Each
10 kg	-0.001 kg to 0.001 kg	4 1/2"	6"	5"	Cast Iron	6	ASTM Class 6 Tolerances	0000000	0000000
20 kg	-0.002 kg to 0.002 kg	5 5/8"	7 5/8"	5 15/16"	Cast Iron	6	ASTM Class 6 Tolerances	0000000	000000
25 kg	-0.0025 kg to 0.0025 kg	5 1/2"	7 11/16"	7 1/8"	Cast Iron	6	ASTM Class 6 Tolerances	0000000	000000