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2Pcs 2-4-6 Blocks 23 Holes Threaded Aperture 5/8'—11UNC Matched Pair Ultra Precision 0.0003' Machinist 246 (2'x4'x6'-23 Holes)

Free shipping on orders over $29.99

$72.78

$ 28 .99 $28.99

In Stock

About this item

  • Dimensions- 2" x 4" x 6"
  • Accuracy and squareness on all sides within .0002"-.0003"
  • Made of precision-grade tool steel hardened and ground on all 6 sides of block
  • Surface finish from 6 to 16 microinches
  • Heat treated and case hardened to HRC 55-62


Feature:
With 23 Holes
Squareness: 0.0003"/1"
Parallelism: ±0.0003"
Dimensional tolerance: ±0.0005" Don't worry, this is normal and won't affect usage
Hardness: HRC 55-62
Finished from 6-16 micro inches
5 holes tapped to 5/8"—11unc and others are untapped
Precision ground on all sides
Squareness on all sides
Surface finish
Oversize to allow nominal tapping
Package Includes :
1 * matched pair 2-4-6 blocks


Joshua D. Rimmer
Reviewed in the United States on September 18, 2024
These blocks were well finished, but as another reviewer mentioned, nowhere near .0002" dimension tolerance. Mine were at .0005" over nominal, out of tolerance by .0003", on all three faces. Also the tapped holes are M16-2, not 3/8-16!
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