Holes Hardened Steel Parallel Clamping Blocks

Achieve ultimate precision in your workshop with this matched pair of 23-hole parallel clamping blocks. Ground and hardened on all six sides to an incredible 0.0001" accuracy, these 1x2x3 blocks (25.4 x 50.8 x 76.2mm) are essential setup, layout, and inspection tools for machinists, toolmakers, and CNC operators. Features

Extreme Machining Accuracy: Precision ground on all 6 sides with parallelism and squareness held to within 0.0001" (0.0002mm).

Hardened Steel Construction: Heat-treated to HRC 57–62 hardness for exceptional durability, wear resistance, and long-term stability.

Versatile 23-Hole Pattern: Features 23 cross-drilled holes for easy clamping, bolting, and mounting workpieces on machine tables or vises.

Matched Pair Performance: Supplied as a matched set of two blocks to ensure identical height and alignment during complex setups.

Multi-Tool Compatibility: Ideal for milling machines, lathes, surface grinders, drill presses, and inspection setups. Specifications

Dimensions: 1" x 2" x 3" (approx. 25.4mm x 50.8mm x 76.2mm)

Material: Hardened Tool Steel

Hardness Rating: HRC 57 – 62

Precision / Accuracy: 0.0001" (0.0002mm)

Hole Count: 23 Holes per block

Quantity: 2 Blocks (Matched Pair) Package Includes

2 x 23-Hole Precision Parallel Clamping Blocks Usage & Care Tips

Keep blocks lightly coated with machine oil to prevent corrosion when not in use. Wipe clean of metal chips and grit before clamping onto reference surfaces to preserve ultra-precise tolerances. Shipping & Store Information

Dispatch: Orders dispatched within 1–2 business days directly from our supplier warehouse.

Pickup: Strictly NOT available.

Transit Protection: We take full responsibility for items lost or damaged during transit.

Payment & Invoicing: Payment required within 7 days. Official GST tax invoice provided upon request.