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Thread Sizes, Materials, & Tips
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Precision Block
Thread Size
- 11-hole blocks feature 5 tapped holes (5/16"-18 for the EG02-0405) for clamping, with 6 untapped through-holes.
- 23-hole blocks include 5 tapped holes (3/8"-16 for EG06-0411 & EG02-0412, and 5/8"-11" for EG06-0415 & EG02-0416) for clamping, plus 18 untapped holes.
- The drilled hole size for EG02-0406 is 0.500-0.501".
- The cross-drilling design ensures minimal weight while maintaining maximum strength.
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Accusize Precision Block
Materials
- Constructed from hardened steel, with a hardness rating of HRC 50–60 on all six sides.
- Each block is precision ground and hardened on all sides for superior durability and accuracy.
- These precision blocks are highly versatile and ideal for precision layout, grinding, and setup work.
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Benefits of
More Holes
The hole configurations of our precision blocks offer unmatched flexibility. The more holes a block has, the more configuration possibilities you can create by bolting blocks together.
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Benefits of
Less Holes
For milling applications where chips, abrasives, coolant, and other debris can enter the holes, blocks with fewer holes or no holes provide a more efficient solution, enhancing productivity by reducing downtime and the need for frequent cleaning.
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Setup Tools
For Milling
Our 1-2-3 Precision Blocks are precision ground to exact measurements of 1 inch by 2 inches by 3 inches, while the 2-3-4, 2-4-6, and 25-50-75mm blocks are equally accurate in their dimensions. These blocks are the go-to standard for machinists when setting up, doing fixturing, or touching off tools.
They are ideal for use with a wide range of milling machines' setup tools, including height gauges and test indicators, for calibration and precision measurement during inspections.
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Feature
Solid Construction
Constructed from hardened steel, with a hardness rating of HRC 50–60 on all six sides.
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Feature
Come in pairs
Each set has two matched blocks, ensuring perfect alignment and accuracy in every application.
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Feature
More Hole Counts Provide More Configurations
The more holes a block has, the more configuration possibilities you can create by bolting blocks.
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Feature
Feedback on Accuracy
Users praised the blocks for their accuracy
Some Inspiring Usage Scenarios
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Inspection
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For professional machine shop, complex projects
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For Miniature Hobbyist
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For Woodworking
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General Usage
Use precision blocks for setup, layout, and calibration tasks in machining operations. These hardened, precision-ground blocks ensure exact alignment and positioning for fixturing, measuring, and clamping workpieces. They're essential tools for achieving accurate, repeatable results in metalworking.
Auxiliary Tools
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Precision Block for Highly Precise Machining Tasks
- Squareness and parallelism of ±0.0001".
- Height accuracy in pairs within ±0.0001".
- Hardened steel construction with a hardness rating of HRC 56-60.
- Tapped and untapped holes for versatile setup.
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Clamping Tool Kit
58 pcs Deluxe Steel Clamping Kits, Table Slot 5/8", Stud Size 1/2"-13, #4230-2626
The Accusize Ultra Precision 1-2-3 Block Set offers ±0.0001" squareness and parallelism, with height accuracy within ±0.0001". Made from hardened steel (HRC 56-60), it includes tapped and untapped holes for versatility, making it ideal for extreme precision or calibration laboratory standards.
Ian S
2025-05-11 20:34:08
As a pair of general-use blocks, they've been great. I haven't used them for any highly accurate work, though, so I can't comment in that respect, but they've been perfect general-use 123 blocks for the shop.
Customer
2024-12-03 19:00:01
satisfied.
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