Matched 1 X 2 X 3 Precision Parallel Blocks Set For Milling And Jig Fixtures Pro Grade 23 Hole Zero Point Zero Zero Zero Two Inch Tolerance Alloy Steel 40Cr 1 Pair For High Accuracy Machining Timunr

Precision 1x2x3 Parallel Blocks Set, 2-Piece, 23-Hole 40Cr
✔️ Size 1x2x3; 23 holes (5 threaded 3/8-16, 18 untapped 9mm); HRC55-62

These precision parallel blocks are matched 1 x 2 x 3 inch inserts crafted from 40Cr alloy steel. Ideal for milling and jig fixtures, they clamp securely and offer exact squareness for accurate setups in metalworking and woodworking shops.

✅ Size: 1" x 2" x 3" (25.4 × 50.8 × 76.2 mm); 23 holes, 5 threaded (3/8-16), 18 untapped (9 mm)
✅ Material: 40Cr alloy steel, hardened to HRC55-62
✅ Squareness: 0.0003"/1" tolerances; size tolerance 0.0002"
✅ Pack: 2 blocks per set, wax-paper wrapped for rust resistance

💡 What is a precision parallel block used for in milling and fixture setups with 40Cr steel?

They’re handy for quick, repeatable workholding and accurate alignment in metalworking and woodworking.

- handy for precise alignment and clamping in machining setups - supports repeatable squareness for accurate milling and drilling - compatible with standard fixtures and clamp systems