Mitutoyo 516-404-26 Gage Block Set 81 Pc AS-2 Steel

Product Description

The MITUTOYO 516-404-26 is an 81-piece steel gage block set covering a measurement range of 0.05 to 4 inches, manufactured to AS-2 accuracy grade per ASME B89.1.9-2002. Each block is individually serialized and ships with an inspection certificate, making this set suited for calibration labs, tool rooms, and quality control departments. Tolerances are graduated by size range: 18 micro inches for blocks from 0.05 to 0.4 inches, 24 micro inches from 0.45 to 1 inch, 32 micro inches at 2 inches, 40 micro inches at 3 inches, and 48 micro inches at 4 inches. The set arrives in a fitted wooden case for organized storage and protection.

This set is used in precision metrology applications across manufacturing, machining, and inspection environments. Step increments include 49 blocks at 0.001-inch steps, 9 blocks at 0.0001-inch steps, 19 blocks at 0.05-inch steps, and 4 blocks at 1.000-inch steps, providing broad combination flexibility for dimensional verification, instrument calibration, and machine setup. The wooden storage case keeps blocks organized and protected when not in service. Typical users include metrology technicians, machinists, and quality engineers requiring traceable dimensional reference standards.

Key Features

• AS-2 accuracy grade conforming to ASME B89.1.9-2002
• 81 steel blocks spanning 0.05 to 4 inches in range
• Graduated tolerances from 18 to 48 micro inches across the size range
• Four step increment series: 0.0001, 0.001, 0.05, and 1.000 inch
• Each block individually serialized for traceability
• Includes inspection certificate and fitted wooden storage case

Compatibility

Designed as a general-purpose precision reference standard for use with surface plates, sine bars, height gages, and other metrology equipment requiring traceable dimensional gage blocks conforming to ASME B89.1.9-2002.

Installation Notes

Gage blocks should be handled by metrology or quality technicians following standard wringing and handling procedures to avoid surface damage. Store blocks in the provided wooden case in a temperature-controlled environment to minimize thermal expansion effects on measurement accuracy. Clean blocks with an appropriate gage oil or solvent before and after use. Never store blocks wrung together for extended periods, as this can cause adhesion damage to the lapped surfaces.