Machinist Grade 1 2 3 Block Set With Matched Pair 1 by 2 by 3 Inches, 23 Holes Including Five Tapped Three Eighths Inch and Eighteen Untapped, 0.0002 Inch Per Inch Accuracy, Hardened And Ground On All Sides, Cross Drilled For Quick Clamping
✔️ Matched pair of blocks: 23 holes, 5 tapped 3/8-16, cross-drilled
These precision machinist blocks are hardened and ground reference tools designed to provide true, square surfaces for setup, inspection, and fixturing in milling, drilling, and assembly work. This matched pair ensures consistent reference points in dual-bench setups.
✅ Block size: 1" x 2" x 3" (25.4 x 50.8 x 76.2 mm)
✅ Pack: matched pair for dual-block setups
✅ Holes: 23 total, including 5 tapped 3/8-16 and 18 untapped
✅ Accuracy: squareness within 0.0002 in per inch
✅ Hardened and ground on all six sides for long life
✅ Cross drilled design for lightweight, strong hold
💡 What is a machinist block used for in precision setups? Handy blocks provide accurate references for squaring, layout, and fixture work in metalworking.
- Right-angle reference for milling and drilling layouts
- Quick clamping and secure positioning with tapped holes
- Consistent transfer of square references between machines
- Hardened, ground surfaces maintain long-term accuracy