Mitutoyo 614166-531 Steel Gage Block 0.126 in Grade 0

Product Description

The MITUTOYO 614166-531 is a square steel gage block measuring 0.126 inches, manufactured to Grade 0 accuracy standards. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, set comparators, and verify dimensional accuracy in machining and inspection environments. This block meets ASME standards and includes a Certificate of Inspection, confirming it has been verified to Grade 0 tolerances. Grade 0 blocks are suited for inspection-room use where tighter dimensional control is required compared to Grade AS-1 or Grade K references.

This gage block is used in metrology labs, quality control departments, and precision machining shops. It serves as a reference standard for calibrating micrometers, vernier calipers, height gauges, and comparator stands. The square geometry provides stable stacking and wringing surfaces for building up measurement stacks. Typical users include dimensional inspectors, tool and die makers, and calibration technicians working in manufacturing and aerospace environments.

Key Features

• Grade 0 accuracy per ASME standards for inspection-grade dimensional reference
• Square steel construction provides flat, stable wringing surfaces
• Nominal size of 0.126 inches with five-decimal precision designation
• Includes Certificate of Inspection confirming compliance to stated accuracy grade
• Individual block sold as a single unit, suitable for adding to an existing gage block set

Compatibility

Designed as an OEM-style replacement or supplemental block compatible with standard square gage block sets requiring a 0.126-inch nominal size. Compatible with wringing sets and block holders designed for square-geometry steel gage blocks conforming to ASME B89.1.9 standards.

Installation Notes

Gage blocks are handled and stored by calibration technicians and dimensional inspection personnel, not installed in the field. Blocks should be cleaned with a lint-free cloth and appropriate cleaning solvent before and after use to prevent corrosion and contamination. When wringing blocks together, apply lateral sliding pressure rather than lifting or snapping to avoid surface damage. Store in the original case away from temperature extremes to maintain dimensional stability.