Value Collection 630-21436 Steel Gage Block 0.143 in Grade 0

Product Description

The VALUE COLLECTION 630-21436 is a rectangular steel gage block ground and lapped to Grade 0 accuracy tolerances. Gage blocks serve as precision length references used to calibrate measuring instruments, set comparators, and verify dimensional tolerances on machined parts. This block measures 0.143 inches and carries NIST certification, meaning its dimensional accuracy has been verified against National Institute of Standards and Technology traceable standards. Grade 0 blocks deliver tighter tolerances than Grade 1 or Grade 2 blocks, making them appropriate for inspection-room and calibration-lab applications where measurement integrity is critical.

This gage block is suited for quality control environments, toolrooms, and metrology labs in manufacturing, machining, and precision fabrication operations. Typical users include quality technicians, metrologists, and tool-and-die makers who require a reliable, certified reference standard for setting instruments or verifying part dimensions. The included NIST certification documentation supports traceability requirements in ISO- and AS9100-governed quality systems.

Key Features

• Grade 0 accuracy for high-precision measurement and calibration applications
• 0.143-inch nominal size provides a specific reference dimension in a standard inch-series set
• Steel construction offers durability and resistance to wear during repeated wring and handling
• Includes NIST-traceable certification documentation supporting quality system traceability requirements
• Rectangular form compatible with standard gage block holders and accessories

Compatibility

Designed as an OEM-style replacement or supplemental block for rectangular inch-series gage block sets used with standard gage block holders and accessories.

Installation Notes

Gage blocks are handled and stored by metrology or quality control personnel, not installed in the field. Keep blocks clean and lightly oiled when not in use to prevent corrosion. Wring blocks together using gentle lateral sliding pressure rather than lifting forces to avoid surface damage. Store in a temperature-controlled environment and allow blocks to thermally stabilize before use to maintain measurement accuracy.