Spi 12-666-4 Steel Gage Block 0.116 in Grade 0 Nist

Product Description

The SPI 12-666-4 is a rectangular steel gage block measuring 0.116 inches, manufactured to Grade 0 accuracy standards. Gage blocks are precision-ground reference standards used to calibrate measuring instruments, set comparators, and verify dimensional tolerances in machining and inspection environments. This block includes NIST certification, providing a traceable accuracy record essential for quality control applications in tool rooms, metrology labs, and production floors. At 0.3 pounds, the block is compact and easy to handle during setup and calibration tasks. Grade 0 designation indicates a high level of dimensional accuracy suitable for reference and calibration work.

This gage block is suited for use in precision measurement applications across manufacturing, machining, and inspection settings. It serves as a dimensional reference for surface plates, height gages, and comparator setups. The NIST certification makes it appropriate for use in environments requiring documented calibration traceability, including ISO-compliant quality systems and regulated inspection departments. Machinists, metrologists, and quality technicians working in both light and heavy manufacturing will find this block applicable to standard gage calibration workflows.

Key Features

• Grade 0 accuracy meets high-precision reference and calibration requirements
• NIST certification provides traceable dimensional accuracy documentation
• Steel construction offers durability and resistance to wear during repeated handling
• Nominal size of 0.116 inches for specific dimensional reference applications
• Compact 0.3-pound weight supports easy single-hand handling and storage

Compatibility

Designed as an OEM-style replacement or supplemental reference block compatible with standard rectangular gage block sets and holders used in general precision measurement and calibration applications.

Installation Notes

Gage blocks should be handled by qualified metrology or quality control personnel following established calibration procedures. Blocks must be wrung or seated properly on a clean, flat reference surface before use. Keep contact surfaces free of contaminants, burrs, and moisture to maintain accuracy and prevent corrosion. Store in a protective case away from temperature extremes to preserve dimensional stability.