ANSI Test Weights | McMaster-Carr

	Weight Weight

	Shape Shape


Round	Square

	Material Material

	Class Class

	Specifications Met Specifications Met

ASTM Class 7 Tolerances

ASTM

ASTM E617 Class 1

	Diameter Diameter

	Height Height

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

DFARS Specialty Metals
COTS-Exempt

	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

	Number of Pieces Number of Pieces

	Width Width

	Length Length

	Increased Capacity Increased Capacity

	Slot Width Slot Width

1/2"

9/16"

	Handle Color Handle Color

	Black		Blue
	Gray		Orange
	Red

	Fill Material Fill Material

Stainless Steel Shot

Sand

	Capacity Capacity

222 Products

Test Weights

Calibrate your scale with these test weights.

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.

Test Weight Sets with Calibration Certificate

A certificate of calibration traceable to NIST states that these test weight sets have passed a test for accuracy.

Legal-for-Trade Test Weights
with Calibration Certificate

To ensure accurate 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.

Test Weight Sets

Keep a variety of test weights on hand to calibrate your scales.

Legal-for-Trade Test Weights

Use with legal-for-trade scales.

Precision Test Weights with Calibration Certificate

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.

Precision Test Weight Sets with Calibration Certificate

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.

Precision Test Weights

Our most accurate test weights, these are often used to calibrate precision scales.

Legal-for-Trade Test Weight
Sets with Calibration Certificate

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.

Legal-for-Trade Test Weight Sets

Designed for legal-for-trade scales.

Precision Test Weight Sets

Use these highly accurate test weight sets to calibrate precision scales.

Grip-Handle Test Weights

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.

Legal-for-Trade Grip-Handle Test Weights

For legal-for-trade scales.

Grip-Handle Test Weights with Calibration Certificate

A certificate of calibration traceable to NIST states that these weights have passed a test for accuracy.

Grip-Handle Test Weights

A handle makes it easy to move these test weights.

Interlocking Test Weights

Stack multiple grooved weights together to calibrate your scales.

Interlocking 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.

Hanging Test Weights

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.

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.

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.

Legal-for-Trade Hanging Test Weights

Designed to calibrate legal-for-trade scales.

Counterbalance Weights for Beam Scales

Add these stackable weights to the end of a beam scale to increase its total capacity. They’re also known as counterpoise weights.

Weight Bags

Hold down equipment and balance loads with these bags.