Value Collection 637-7507 Two Face Parallel Tool Steel

Product Description

The VALUE COLLECTION 637-7507 is a two face parallel used in precision machining and workholding setups. Manufactured from hardened tool steel, it holds a parallelism tolerance of 0.0003 inches across its 6-inch length, making it a reliable reference and support tool for milling, grinding, and inspection operations. The parallel measures 6 inches long, 1-3/4 inches high, and 3/16 inches thick. Hardness is rated at 55-62 HRC, ensuring resistance to wear and deformation under repeated clamping loads. Machinists and toolroom professionals use these to level workpieces, establish reference surfaces, and support parts in vises or on surface plates.

This two face parallel is suited for toolroom, job shop, and production machining environments where accurate workpiece positioning is required. It supports setups in vertical milling machines, surface grinders, and inspection fixtures. Sold as an individual unit, it can be added to an existing parallel set or used as a standalone reference tool where its specific thickness or height is the required stack dimension.

Key Features

• Parallelism of 0.0003 inches ensures consistent, repeatable workholding accuracy
• Hardened tool steel construction at 55-62 HRC resists wear and maintains dimensional stability
• Two face ground parallel surfaces provide reliable reference contact on both sides
• Accuracy to 0.001 inches suits a wide range of precision setup applications
• Squareness of 0.0003 inches per 6 inches supports use as a right-angle reference surface
• Compact 3/16-inch thickness useful for tight-clearance vise setups

Compatibility

Designed as a standard two face parallel for use in machinist vises, surface grinders, and inspection fixtures common to toolroom and production machining environments.

Installation Notes

Parallels are installed by machinists and toolroom technicians as part of workholding setup. Clean the vise jaw faces and parallel surfaces before use to prevent debris from affecting seating accuracy. Do not use parallels as striking surfaces or pry tools, as this can damage the ground faces and compromise parallelism. Inspect periodically for nicks or surface damage that could affect workpiece support accuracy.