Precision Ground 1 Inch By 2 Inch By 3 Inch Steel 1 2 3 Blocks With 23 Holes For Setup Layout And Inspection, Case Hardened On All Sides, Squareness Within 0.0002 Inch Per Inch, Includes 5 Tapped 3 8 16 Holes And 18 Plain Holes, Ideal Machining Reference

Precision ground 1x2x3 inch steel inspection blocks pair
✔️ Matched pair, ground to.0001", six-sided case hardened, 23 holes

These precision ground steel blocks are used as reliable references for setup, layout, and inspection in machine shops and manufacturing environments. Paired blocks ensure accurate squareness and repeatable positioning in fixtures and tooling jaws.

✅ Size: 1 in x 2 in x 3 in (25.4 mm x 50.8 mm x 76.2 mm); pack: matched pair
✅ Hole count: 23 holes total; 5 tapped 3/8-16 and 18 plain
✅ Tolerances: ground to.0001 in; squareness within.0002 in per inch
✅ Surface treatment: case hardened on all six sides
✅ Material and use: steel blocks for setup, layout, and inspection in machining

💡 What is a precision ground steel block used for in machining setups? This handy reference helps ensure accurate alignment and repeatable measurements.

- Handy for aligning parts in fixtures and jigs - Improves squareness and parallelism during inspection - Works with tapped and plain hole patterns for fixturing