Value Collection 637-7624 Tool Steel Parallel 9x1.5x0.75in Pair

Product Description

The VALUE COLLECTION 637-7624 is a matched pair of tool steel parallels used to support and position workpieces accurately on mill tables, surface plates, and magnetic chucks. Each parallel measures 9 inches long, 1-1/2 inches high, and 3/4 inches thick. The pair holds a parallelism tolerance of 0.0002 inches, making it suitable for precision setups where consistent height reference is critical. Hardened to 58 Rc, the steel resists wear and maintains dimensional stability through repeated use in machine shop environments. Machinists, toolmakers, and setup techs rely on parallels like these to establish flat, repeatable datum surfaces before clamping or indicating a part.

These parallels are suited for general-purpose and precision machining applications in job shops, toolrooms, and manufacturing cells. They function as workholding support under vise jaws, on surface plates for inspection setups, or on magnetic chucks for grinding operations. The matched-pair format ensures both pieces share the same verified height, which is essential when supporting a single workpiece across two contact points. Sold as a set of two, they are a standard addition to any machinist setup kit.

Key Features

• Parallelism tolerance of 0.0002 inches for precision workholding and inspection setups
• Hardened to 58 Rc for wear resistance and long-term dimensional stability
• Tool steel construction provides strength and resistance to deformation under clamping load
• Sold as a matched pair with verified equal height between both pieces
• Compact 3/4 inch thickness fits standard vise jaw clearances

Compatibility

Designed as a standard matched-pair tool steel parallel suitable for use with milling vises, surface plates, magnetic chucks, and similar workholding setups in general machining and toolroom applications.

Installation Notes

Parallels are placed by machinists and toolmakers during workpiece setup — no permanent installation is required. Clean contact surfaces on both the parallel and the vise jaw or chuck before placing to prevent false seating from chips or debris. Verify seating by lightly tapping the workpiece and listening for a solid tone with no rocking. Store parallels as a matched pair to preserve the verified tolerance relationship between the two pieces.