Precision 5 Matched Pair 1 2 3 Blocks With 23 Holes 0.0002 Inch Accuracy Pro Grade Machinist Hardened Steel RC 55 62 Jig For Milling Machine Setup And Square Work For Precise Alignment Fixturing And Metalworking Projects TINVHY

Five-Piece Matched 1-2-3 Block Sets with 23 Holes
✔️ Includes 5 matched blocks with 23 holes,.0002 in per inch accuracy

These precision 1-2-3 blocks are hardened steel fixtures used in metalworking to set up, align, and square workpieces on milling machines, drill presses, and inspection benches. They come in matched pairs for consistent spacing across multiple setups, with holes sized for common fasteners. The 23-hole configuration includes five tapped 5/8-11 holes and eighteen untapped holes, designed for flexibility in fixturing.

✅ Material: precision-grade tool steel, hardened and ground on all six sides
✅ Accuracy: squareness on all sides within.0002 in per inch
✅ Holes: 5 tapped 5/8-11 holes and 18 untapped holes
✅ Design advantage: cross drilling reduces weight while keeping strength
✅ Contents: 5 matched pairs of 1-2-3 blocks

💡 What is a precision 1-2-3 block used for in metalworking?

It's a handy reference tool for establishing square and parallel setups in machining.

• Used to align fixtures and workpieces on milling machines
• Supports repeatable setup for drilling, milling, and inspection tasks
• Works with standard 1-2-3 block sizes and compatible fixtures