Ultra Precision 1-2-3 Blocks Set Nakkaa 23 Hole Matched Pair

Description

Product Overview

The Ultra Precision 1-2-3 Blocks Set from Nakkaa is engineered to meet the most demanding dimensional calibration requirements across a wide range of industrial applications. Each block is fabricated from premium tool stainless steel that has been hardened to a Rockwell hardness of 56‑60, ensuring exceptional wear resistance and long‑term stability under repeated use. The blocks are ground on all six faces to achieve a flatness and parallelism that conforms to the strict tolerance of ±0.0001″, providing a reliable reference for high‑precision measurement tasks.

Manufacturing of the blocks follows a rigorous heat‑treatment cycle that includes case hardening and tempering to eliminate internal stresses and to guarantee uniform hardness throughout the material. The hardened steel surfaces are then meticulously polished to a mirror finish, reducing the risk of surface contamination and facilitating easy cleaning after exposure to cutting fluids or metal shavings. This level of craftsmanship ensures that the blocks maintain their calibrated dimensions even after extensive use in harsh workshop environments.

Each set includes three rectangular blocks measuring 1″ x 2″ x 3″ that are precisely machined to provide a stable base for measurement operations. The blocks feature a total of 23 holes, five of which are tapped to a 3/8‑16 thread size, while the remaining holes remain untapped for versatile positioning of accessories and fixtures. The inclusion of a matched screw pair allows users to quickly and accurately secure workpieces or measurement tools, enhancing repeatability and reducing setup time.

The complete set is housed in a rugged, impact‑resistant plastic case that offers organized compartments for each block, the screw pair, and additional accessories. The case’s ergonomic design includes a secure latch and a molded handle for easy transport between job sites, while the interior foam inserts protect the blocks from vibration and accidental damage during transit. This packaging solution not only extends the lifespan of the product but also provides a convenient storage option for busy professionals who need quick access to calibrated tools.

Usage

Machinists working in CNC machining centers, manual mills, or lathes will find the Ultra Precision 1-2-3 Blocks Set indispensable for setting up workpiece zero points, checking tool wear, and verifying spindle alignment. The hardened steel construction tolerates the high‑temperature environments typical of metal cutting operations, while the precise hole pattern enables the rapid attachment of workholding devices, reducing downtime and improving overall productivity.

Woodworkers engaged in fine furniture making, cabinetry, or joinery can use the blocks to verify the flatness of table surfaces, calibrate saw blade offsets, and ensure consistent dimensions across multiple components. The lightweight yet robust design of the blocks makes them easy to handle during repetitive tasks, and the screw‑matched pair provides a secure method for clamping delicate wooden pieces without marring the surface.

In metalworking applications such as welding jig setup, sheet metal fabrication, and toolmaking, the blocks serve as a stable reference for aligning fixtures, checking the squareness of welded assemblies, and measuring the thickness of metal plates. The hardened steel material resists deformation from heat and mechanical stress, ensuring that the calibration reference remains accurate even after exposure to welding spatter or high‑temperature processes.

Calibration laboratories and quality‑control departments can integrate the blocks into their standard operating procedures for verifying the performance of micrometers, dial indicators, and coordinate measuring machines (CMMs). The 23‑hole configuration allows for the attachment of a variety of probes and adapters, facilitating comprehensive testing of measurement equipment across multiple axes and dimensions.

Why Choose Us

Nakkaa has built a reputation for delivering high‑quality industrial tools that combine precision engineering with durable construction. Our commitment to rigorous quality control begins with the selection of premium stainless steel alloys, followed by a multi‑stage heat‑treatment process that guarantees consistent hardness and dimensional stability. Each block undergoes a series of calibrated inspections using laser interferometry and coordinate measurement systems to verify that it meets the exacting specifications required for professional calibration work.

We understand that reliable tools are essential for maintaining production efficiency and product quality. That is why every Ultra Precision 1-2-3 Blocks Set is backed by a comprehensive warranty that covers material defects and workmanship issues for a period of two years from the date of purchase. Our dedicated customer support team is available to assist with technical inquiries, provide guidance on optimal usage, and facilitate any necessary replacements or repairs.

Our manufacturing facilities adhere to ISO 9001 standards, ensuring that each production batch follows a documented quality management system. This systematic approach minimizes variability and enhances traceability, allowing us to quickly address any concerns that may arise in the field. By choosing Nakkaa, you are investing in a product that reflects a legacy of engineering excellence and a commitment to continuous improvement.

In addition to the core product, we offer a range of complementary accessories, including additional screw sizes, custom‑drilled blocks, and protective storage solutions, enabling you to expand your calibration toolkit as your needs evolve. Our focus on modularity and compatibility ensures that the Ultra Precision 1-2-3 Blocks Set can seamlessly integrate with existing measurement systems and workflows, providing a scalable solution for both small workshops and large manufacturing facilities.

Key Features

• Hardens steel blocks with HRC 56‑60 for long‑lasting durability and wear resistance
• 23 precisely drilled holes, including five tapped for versatile accessory mounting
• Matched screw pair enables quick, repeatable workpiece securing for faster setup
• Compact 1″ x 2″ x 3″ block dimensions provide portability without sacrificing accuracy
• Comes with a rugged plastic case and dedicated customer support for peace of mind

FAQ

What is the squareness tolerance of the blocks?

The blocks are manufactured to a squareness tolerance of ±0.0001″, ensuring that each face is perpendicular to the others within this extremely tight specification.

Can the blocks be used with other thread sizes?

Yes, while five of the holes are tapped to a 3/8‑16 thread, the untapped holes allow you to use adapters or custom screws of different sizes to suit a variety of applications.

What warranty does Nakkaa provide for this product?

Nakkaa offers a two‑year warranty covering any material or workmanship defects, and our support team is ready to assist with any technical questions or service needs you may have.