Spi 15-028-4 Rectangle Steel Gage Block 0.114 in Grade AS-1

Product Description

The SPI 15-028-4 is a rectangular steel gage block ground to a nominal size of 0.114 inches and certified to Grade AS-1 accuracy. Gage blocks of this type serve as dimensional reference standards used to calibrate measuring instruments, set up machine tools, and verify workpiece tolerances on the shop floor or in a metrology lab. This block includes NIST certification, providing traceability to national standards of measurement. It is primarily used by machinists, quality control technicians, and calibration specialists who require a reliable, repeatable reference for precision measurement work.

Grade AS-1 gage blocks are suited for inspection and calibration applications where high dimensional accuracy is required. This block is appropriate for use in manufacturing environments, tool rooms, and quality labs. It can be used individually or wrung together with other blocks in a set to build up specific dimensions. Typical applications include setting comparators, checking micrometers, and establishing reference dimensions during setup operations.

Key Features

• Grade AS-1 accuracy for inspection and calibration-grade dimensional reference
• Nominal size of 0.114 inches for precise stack and single-block measurement applications
• NIST-traceable certification included for documented measurement traceability
• Rectangular steel construction for durability and consistent wringing performance
• Single-block packaging suitable for replacing or supplementing an existing gage block set

Compatibility

Designed as a standard rectangular gage block for use with conventional gage block accessories including holders, jaws, and scribing points compatible with Grade AS-1 steel blocks. Can be wrung with other rectangular steel gage blocks of matching grade and material for dimensional stack-up.

Installation Notes

Gage blocks are handled and used by calibration technicians and quality control professionals, not installed in the traditional sense. Clean mating surfaces thoroughly before wringing to prevent damage or inaccurate readings. Store blocks in their protective case when not in use to prevent corrosion and surface damage. Follow applicable ASME B89.1.9 standards for gage block care, use, and calibration intervals.