Spi 12-661-5 Steel Gage Block 0.111 in Grade 0 Nist

Product Description

The SPI 12-661-5 is a Grade 0 rectangular steel gage block measuring 0.111 inches. 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, confirming traceable accuracy to national measurement standards. Grade 0 indicates a high level of dimensional accuracy suitable for calibration lab use and precision inspection work. At 0.3 pounds, it is a compact, single-block unit appropriate for bench use by quality control technicians and metrology professionals.

This gage block is suited for use in machine shops, quality labs, and tool rooms where dimensional verification and instrument calibration are performed. It serves as a reference standard when setting dial indicators, height gages, and similar metrology equipment. The NIST certification makes it appropriate for environments requiring documented traceability, including ISO-compliant inspection departments and production facilities subject to measurement system audits.

Key Features

• Grade 0 accuracy rating for high-precision calibration and inspection applications
• NIST certification included for traceable dimensional reference
• Steel construction for durability and long-term dimensional stability
• Nominal size of 0.111 inches for precise reference measurement
• Single-block unit sold individually for targeted gage block set completion or replacement

Compatibility

Designed as an OEM-style replacement or standalone reference standard compatible with standard rectangular gage block sets and accessories used in precision metrology applications.

Installation Notes

Gage blocks are handled and used by quality control technicians and metrologists rather than installed in a traditional sense. Store blocks in their protective case when not in use to prevent corrosion and surface damage. Clean contact surfaces with an appropriate gage block cleaning solution before wringing or use. Avoid dropping or sliding blocks across hard surfaces, as surface damage will compromise dimensional accuracy.