---
product_id: 18893939
title: "Precision 2-4-6 Blocks"
brand: "all industrial tool supply"
price: "$348.07"
currency: USD
in_stock: true
reviews_count: 8
url: https://www.desertcart.us/products/18893939-precision-2-4-6-blocks
store_origin: US
region: United States of America
---

# Precision 2-4-6 Blocks

**Brand:** all industrial tool supply
**Price:** $348.07
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Precision 2-4-6 Blocks by all industrial tool supply
- **How much does it cost?** $348.07 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/18893939-precision-2-4-6-blocks)

## Best For

- all industrial tool supply enthusiasts

## Why This Product

- Trusted all industrial tool supply brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

2-4-6 Blocks 23 Holes Matched Pair Ultra Precision .0006" Machinist 246 Jig

## Features

- Our part # ALL-55540     Heat treated and case hardened to HRC 57-62     Made of precision-grade tool steel hardened and ground on all 6 sides of block     5 Tapped holes size: 5/8"-11    ›See more product details

## Images

![Precision 2-4-6 Blocks - Image 1](https://m.media-amazon.com/images/I/61lNliU6BDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Not Case Hardened?
  

*by Y***T on Reviewed in the United States on December 10, 2016*

The blocks I received came with a couple of small dents in the edges. The dents caused slight bulges in the adjacent faces, which I was able to (easily) file away. The blocks are advertised as case hardened, but I don't believe they are. I shouldn't have been able to file them, and they probably shouldn't have dented in the first place.Edit: The seller assured me that the blocks are case hardened. I did some simple comparison tests with a regular file. The blocks do seem to be harder than some hardware-store steel stock that I had lying around. They feel slightly softer than a cheap chisel I own, and definitely softer than a set of Brown & Sharpe 1-2-3 blocks that I recently purchased. So, I've changed my opinion. I suspect that they actually are hardened, just not as hard as I expected.

### ⭐⭐⭐⭐ 







  
  
    Good geometry, kind of soft
  

*by R***Y on Reviewed in the United States on September 13, 2019*

Checked on a surface plate with a LVDT against gage blocks. Blocks are matched to 0.0002", and are not more than 0.0002" from nominal 2" 4" 6". Very flat and parallel - <0.0001". I assume these are pretty square.Minus a star for low hardness and a slight waviness (<<0.0001") in the grind. One of the blocks got loose from the flimsy product box in shipping and banged up the other one, so I had to stone a couple places right off the bat.I totally recommend these as a great value. Maybe order them by themselves - they are a dense 18 pounds!

### ⭐⭐⭐⭐ 







  
  
    GREAT VALUE, if you are on a budget
  

*by A***R on Reviewed in the United States on April 6, 2022*

PRO:Ground to w/in .001" on size, flatness, and parallelism to opposing side.Shipped wrapped/coated in wax paper (no rust).Very good quality, for such a bargain!CON:Not as hard as I'm used to (dings easily, but can also be stoned off easily).Overall:MUST-HAVE. I would recommend to anyone, but the most discriminating of Machinists.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-22*