Mitutoyo 516-401-26 Gage Block Set 81 Pc Steel Grade 00

Product Description

The MITUTOYO 516-401-26 is an 81-piece steel gage block set covering a measurement range of 0.05 to 4 inches. Built to Accuracy Grade 00, these blocks meet ASME B89.1.9-2002 standards and are suited for the most demanding dimensional verification work on the shop floor or in a calibration lab. Each block is individually serialized and ships with an inspection certificate, making the set ready for use in documented quality systems. Tolerances are graded by size range: 3 micro inches for blocks from 0.05 to 1 inch, 4 micro inches at 2 inches, 5 micro inches at 3 inches, and 6 micro inches at the 4-inch block.

This set is used in precision metrology applications across manufacturing, tool-and-die, aerospace, and automotive environments. Machinists, metrologists, and quality technicians use gage blocks to calibrate measuring instruments, set comparators, verify part dimensions, and establish master references. The step increments cover 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 increments, giving users the combination flexibility to build a wide range of precise measurements.

Key Features

• Accuracy Grade 00 per ASME B89.1.9-2002 for the highest standard of dimensional accuracy
• 81 pieces with step increments of 0.0001, 0.001, 0.05, and 1.000 inches for versatile combination stacking
• Tolerances graded by block size: 3 to 6 micro inches across the 0.05 to 4 inch range
• Steel construction for durability and long-term wringing performance
• Each block individually serialized for traceability in quality management systems
• Includes inspection certificate and wooden storage case

Compatibility

Designed as a general-purpose precision gage block set for use with comparators, height gages, sine bars, and other metrology instruments that accept square-form steel gage blocks.

Installation Notes

Gage blocks should be handled by metrology technicians or trained machinists familiar with wringing technique and proper block care. Clean blocks with an appropriate gage block cleaning solution before and after use to prevent corrosion and ensure accurate wringing. Store blocks in the provided wooden case when not in use, and avoid exposing them to temperature extremes or sudden thermal changes before measurement. Never drop or slide blocks across abrasive surfaces, as surface damage will compromise accuracy.