Mitutoyo 614179-531 Square Steel Gage Block 0.139 in Grade 0

Product Description

The MITUTOYO 614179-531 is a square steel gage block measuring 0.139 inches, manufactured to Grade 0 accuracy and conforming to ASME standards. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, verify machine tool setups, and establish dimensional baselines in metrology and quality control environments. This block ships with a Certificate of Inspection, confirming that it has been individually verified to Grade 0 tolerances. At 1 pound, it is a solid, single-piece steel reference standard suited for use in tool rooms, calibration labs, and production inspection stations.

This gage block is appropriate for use in precision measurement applications across manufacturing, machining, and metrology settings. Grade 0 blocks occupy the higher end of the workshop-grade accuracy spectrum and are commonly used by quality technicians, machinists, and calibration specialists who need traceable, reliable dimensional references. The 0.139-inch size makes it a useful increment block for building up specific stack dimensions or verifying close-tolerance measurements where an exact 0.139-inch reference is required.

Key Features

• Grade 0 accuracy conforming to ASME standards for precise dimensional verification
• Square steel construction provides durability and long-term dimensional stability
• 0.139-inch nominal size suitable for stack assembly and instrument calibration
• Includes Certificate of Inspection for traceability and quality assurance documentation
• Single-piece packaging with a minimum order quantity of 1

Compatibility

Designed as an OEM-style precision reference standard compatible with standard gage block sets and wringing accessories used in ASME-compliant metrology and inspection applications.

Installation Notes

Gage blocks are handled and used by quality technicians and precision machinists in controlled measurement environments. Store blocks in their protective case when not in use to prevent surface damage and corrosion. Clean contact surfaces with lint-free cloth and appropriate solvent before wringing or stacking. Avoid dropping or sliding blocks against each other, as surface damage will compromise Grade 0 accuracy.