Description
Details
Precision Ground Steel Parallels Set – 18 pcs, 150 mm Length
Description:
A set of 18 precision ground steel parallels designed for use with milling vises and machine setups requiring highly accurate and stable workpiece support. Ideal for CNC machining, milling, and inspection tasks. Each parallel is manufactured to tight tolerances and heat treated for durability.
Key Features:
✅ Length: 150 mm
✅ Width (Height): 8 mm
✅ Thickness Range: 14 mm to 44 mm (in 2 mm increments)
✅ Number of Pieces: 18 (9 matched pairs)
✅ Material: 20CrMnTi Alloy Steel
✅ Hardness: HRC 58–62
✅ Precision Tolerance: ±0.003 mm
✅ Packaging: Supplied in a wooden storage case
✅ Total weight: 5.5kg
How to Use Precision Parallels – Beginner Guide
Precision parallels are hardened and ground steel blocks used to support and level workpieces in a machine vise during milling, drilling, or CNC machining. To use them, simply choose a matching pair with the desired height, place one on each side of the vise jaws, and rest the workpiece on top. This lifts the part off the vise floor, ensuring clearance for through-holes and allowing precise machining of edges and surfaces. Tighten the vise securely with the parallels in place, making sure they remain aligned and stable. After use, clean the parallels from chips and oil to preserve their accuracy and store them in the provided wooden case. Perfect for beginners and professionals alike, parallels improve setup accuracy, reduce errors, and are essential for any precise machining task.
Size
Included Sizes (Thickness × Width × Length):
- 14×8×150 mm – 2 pcs
- 16×8×150 mm – 2 pcs
- 20×8×150 mm – 2 pcs
- 24×8×150 mm – 2 pcs
- 30×8×150 mm – 2 pcs
- 32×8×150 mm – 2 pcs
- 36×8×150 mm – 2 pcs
- 40×8×150 mm – 2 pcs
- 44×8×150 mm – 2 pcs
(Each size comes as a matched pair)
Application:
Used for supporting and leveling workpieces in vises during precision machining or inspection. The ground surfaces and consistent height ensure repeatable and accurate setups.
Example
