Description
Product Overview
The Accusize EG02-0408 gage block set is engineered for ultra‑precise measurement work. Each block offers 0.0001″ squareness and +/- 0.0001″ parallelism, ensuring reliable results in critical machining and inspection processes. Constructed from hardened steel (HRC 56‑60) and finished to a surface tolerance of 6‑16 micro inches, the blocks provide a smooth, wear‑resistant interface. The set includes five blocks with five 3/8‑16 tapped holes, five socket head cap screws, and a hex key, all housed in a sturdy, fitted plastic case for easy transport and storage.
![[Product front view showing all components]](https://www.weeklybest.store/wp-content/uploads/2026/05/2ed8adfd23914110af66e192fab01a9c.jpg)
Usage
This gage block set is ideal for precision engineering environments such as CNC machining, toolmaking, and quality control labs. Use the blocks to set up reference surfaces, calibrate measuring instruments, or verify the flatness of workpieces. The combination of tapped and untapped holes allows for secure mounting of fixtures or accessories, making the set adaptable to a wide range of industrial applications.
Why Choose Us
Accusize is a trusted manufacturer known for rigorous quality control and consistent performance. Each block undergoes precision grinding on all sides and is oversize‑tapped to guarantee accurate thread engagement. The durable case protects the components from damage and contamination, extending the life of your measurement tools.
Key Features
- Ultra‑precise 0.0001″ squareness and parallelism for reliable measurements
- Hardened to HRC 56‑60, providing long‑lasting wear resistance
- Super‑smooth surface finish (6‑16 micro inches) for accurate contact
- Versatile design with five 3/8‑16 tapped holes and additional untapped holes
- Comprehensive support package including screws, hex key, and protective case
FAQ
What material are the gage blocks made from?
The blocks are made from hardened steel with a hardness rating of HRC 56‑60, ensuring durability and dimensional stability.
Can the tapped holes be used with standard tools?
Yes, the five 3/8‑16 tapped holes accept standard socket head cap screws, allowing you to secure fixtures or accessories easily.
How should the blocks be stored to maintain accuracy?
Keep the blocks in the supplied fitted plastic case, away from moisture and extreme temperatures, to preserve their precision over time.
Are these blocks suitable for calibration of measuring instruments?
Absolutely. Their tight tolerances and stable material make them ideal for calibrating micrometers, dial indicators, and other precision instruments.
What is the warranty on this product?
Accusize offers a one‑year limited warranty covering manufacturing defects, ensuring you receive a reliable measurement solution.




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