All Industrial 55540 | 2-4-6 Blocks 23 Holes Matched Pair Ultra Precision 0.0006" Machinist 246 Jig

Description

The All Industrial 55540 precision 246 jig blocks are a matched pair made for ultra-accurate setup work. Each 2-4-6-block matched pair offers a 23-hole layout that supports tapped and untapped mounting patterns. These precision 2-4-6 blocks are heat treated and case hardened to HRC 57-62 for long service life in shop environments. Manufactured from precision-grade tool steel, the matched set is ground on all six sides to preserve parallelism and squareness. The 23-hole machinist 246 jig 0.0006 arrangement includes five tapped 5/8-11 holes and fifteen untapped ones. 630 holes per block for flexibility. With an accuracy and squareness within 0.0006", these 2-4-6 blocks support high-precision inspection and fixturing tasks. Cross-drilling design reduces weight while maintaining maximum rigidity for heavy-duty use. At the standard 2" x 4" x 6" dimensions, this matched set integrates easily into standard setup and inspection routines. Weighing 18.3 lbs, the paired blocks provide mass and stability while remaining portable for bench work. Technicians value the 0.0006" tolerance 2-4-6 blocks for setup, layout, inspection, and precision gauging. This precision 246 jig block matched set is ideal for toolrooms, QA labs and jigs where repeatability matters. The matched blocks are supplied as a pair to ensure consistent mating surfaces and predictable stack-up results. Use the All Industrial 55540 precision 246 jig blocks to square work, set tool heights, and create reference surfaces quickly. Maintenance is minimal due to hardening and ground finishing, keeping surfaces clean and protected for long-term accuracy. Choose this 23 hole matched 246 block pair to bring reliable, ultra-precision performance to everyday machinist workflows.

Product Features and Benefits

Hardened Tool Steel Construction

The All Industrial 55540 precision 246 jig blocks are heat treated to HRC 57-62 for durability under shop use.

Matched Pair Accuracy

This 2-4-6-block matched pair is supplied as matched components to ensure consistent alignment and predictable results.

23-Hole Versatility

The 23-hole machinist 246 jig pattern includes tapped and untapped locations for flexible fixturing and clamping.

Precision Ground Surfaces

All faces are precision ground on six sides, delivering the 0.0006" tolerance that high-precision machinist 246 jig tasks require.

Cross-Drilled Lightweight Strength

Cross drilling reduces overall weight while maintaining strength, making this precision 2-4-6 blocks set easy to handle and robust in use.

Frequently Asked Questions

What tolerance do the All Industrial 55540 blocks guarantee?

The All Industrial 55540 precision 246 jig blocks are manufactured to an accuracy and squareness within 0.0006”.

How many holes are on each block in the matched pair?

Each block in the 2-4-6 block matched pair contains 23 holes, including five tapped 5/8-11 holes and 15 untapped .630” holes.

What material are the 23-hole matched 246 block pair made from?

The blocks are made of precision-grade tool steel that is heat-treated and case-hardened to HRC 57-62.

How to use 2-4-6 blocks?

To use 2-4-6 blocks, position the matched pair on a flat surface, align the precision-ground faces to square or elevate the workpiece, and secure it through the 23-hole machinist 2-4-6 jig pattern for accurate setup within a 0.0006” tolerance.

What are common uses for the precision 246 jig blocks matched set?

These 2-4-6 blocks are commonly used for setup, layout, inspection, workholding and as reference surfaces in machinist shops.

Warning:

This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.

For more information, visit www.P65Warnings.ca.gov

Warning:

This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.

For more information, visit www.P65Warnings.ca.gov