Machinist Grade 1 By 2 By 3 Hardened Steel Block Set Matched Pair With 23 Holes Including Five Tapped Three Eighths Inch By Sixteen TPI Holes And Eighteen Plain Holes Precision Ground On All Sides For Setups Layout And Inspection In Milling

2-pack: 1x2x3 Hardened Steel Layout Block Pair w/ 23 Holes
✔️ Matched pair, 23-hole block: 5 tapped 3/8-16, 18 plain for milling

These machinist-grade layout blocks are hardened steel blocks used for precise setup, layout, and inspection on milling machines and other tooling. Each matched pair provides consistent squareness and hole patterns for clamping and positioning.

✅ 23-hole design with 5 tapped 3/8-16 and 18 plain holes
✅ Matched pair ground to.0001" tolerances for precise setup
✅ Precision ground and case hardened on all six sides
✅ Squareness within.0002" per inch for reliable alignment
✅ Used for set-up, layout, and inspection in milling

💡 What is a machinist layout block used for in milling and inspection tasks?
They are handy for accurate setup and repeatable layouts.
- square, ground surfaces for repeatable alignment
- tapped and plain holes for clamps and fixtures
- six-sided hardness and tight tolerances for accuracy
- quick, handy reference for layouts and inspection checks