1-2-3 Blocks Set Matched Pair 23 Hole Hardened Steel 1x2x3 by Nakkaa

Description

Product Overview

The Nakkaa 1-2-3 Blocks Set is a matched‑pair of ultra‑precision setup blocks designed for the exacting demands of modern machining, woodworking, and metalworking shops. Each block measures 1″ × 2″ × 3″ and is fabricated from premium tool‑grade stainless steel that has been hardened to a Rockwell hardness of 56‑62 and case‑hardened on all six faces. This dual‑hardening process provides a surface that resists wear while maintaining the dimensional stability required for high‑accuracy work. The blocks feature 23 precisely drilled holes, five of which are tapped to 3/8‑16 UNC, allowing for quick and secure attachment of clamps, fixtures, and accessories. The remaining holes are untapped, offering flexibility for custom tooling or temporary setups.

The machining tolerances are exceptional: squareness is held to 0.0003″, parallelism to ±0.0002″, and the height match between the pair is within ±0.0002″. These specifications ensure that any workpiece or tool mounted on the blocks will sit true, eliminating cumulative errors that can arise from less accurate fixtures. The blocks are heat‑treated and then ground on all six sides, guaranteeing a flat, true surface that will not deform under typical shop loads.

Usage

These blocks excel in a wide range of shop environments. In a CNC machining center, they can be used to set up workholding plates, align spindle fixtures, or create reference planes for multi‑axis operations. Woodworkers will appreciate the ability to quickly locate and secure workpieces for planing, routing, or joinery tasks, especially when the tapped holes are used to attach clamps or dowel pins. Metalworkers can employ the blocks as a base for welding jigs, alignment fixtures, or as a reference for precision grinding and surface‑finishing operations.

Because the blocks are relatively lightweight (each weighs just over a pound) yet retain maximum strength, they can be moved easily around the shop floor without sacrificing stability. The compact dimensions allow them to fit into tight spaces, making them ideal for bench‑top setups, portable toolkits, or on‑site field work where space and weight are at a premium.

Why Choose Us

Choosing the Nakkaa 1-2-3 Blocks Set means investing in a product that combines rigorous engineering with practical shop‑floor usability. Nakkaa’s commitment to quality is evident in the meticulous heat‑treatment process, the precision grinding of every face, and the strict inspection regime that guarantees each block meets the advertised tolerances. The blocks are backed by a 12‑month limited warranty that covers material defects and workmanship, providing peace of mind for professional users.

In addition to the technical specifications, Nakkaa offers responsive customer support. Whether you need assistance selecting the right accessories, guidance on optimal setup techniques, or help with warranty claims, the support team is available via phone, email, and live chat. This level of service ensures that you can get the most out of your purchase and maintain peak performance throughout the product’s lifespan.

Key Features

• Ultra‑precise tolerances (0.0003″ squareness) guarantee true alignment for critical setups.
• Hardened steel construction provides long‑lasting durability and resistance to wear.
• 23 holes—including five 3/8‑16 tapped—offer versatile clamping and fixture options.
• Compact 1″×2″×3″ size and lightweight design enable easy handling and storage.
• Dedicated Nakkaa support and 12‑month warranty ensure reliable after‑sales service.

FAQ

What is the difference between the tapped and untapped holes?

The tapped holes (3/8‑16 UNC) are pre‑threaded to accept standard machine screws, making it quick to attach clamps, fixtures, or accessories without additional drilling. Untapped holes provide flexibility for custom tooling, allowing you to drill or tap them to suit specific applications.

Can these blocks be used for high‑temperature processes like welding?

Yes. The stainless‑steel composition and heat‑treated hardness allow the blocks to withstand typical welding temperatures without losing dimensional stability. However, prolonged exposure to extreme heat should be avoided to maintain long‑term accuracy.

How do I verify the squareness of the blocks after purchase?

Use a calibrated surface plate and a high‑precision dial indicator. Place the block on the plate, align one face with the reference surface, and measure the deviation on the adjacent face. The reading should be within 0.0003″ of true squareness, confirming the manufacturer’s specifications.

Are replacement blocks available if one becomes damaged?

Nakkaa offers replacement blocks that match the original specifications. Contact customer support with the serial number and purchase details, and they will arrange a replacement or provide guidance on compatible alternatives.

What accessories are recommended to get the most out of this set?

Consider adding a set of precision clamps, a magnetic base, and a set of dowel pins that match the tapped holes. These accessories enhance the versatility of the blocks, allowing for rapid setup of a wide range of workpieces and fixtures.