Value Collection 637-7502 Two Face Parallel Tool Steel

Product Description

The VALUE COLLECTION 637-7502 is a two face parallel used to establish precise, repeatable setups on milling machines, surface grinders, and inspection equipment. Ground from tool steel and hardened to 55-62 HRC, this parallel delivers a parallelism tolerance of 0.0003 inches across its 6-inch length. The 0.001-inch accuracy rating supports close-tolerance workholding tasks where consistent part positioning is critical. Machinists and tool room technicians reach for this type of parallel when stacking workpieces, indicating vise jaws, or setting up fixtures that demand flat, parallel reference surfaces.

This parallel is sized at 6 inches long, 1-1/2 inches high, and 1/2 inch thick, making it a standard choice for benchtop and knee-mill setups in job shops, production environments, and tool rooms. The two face design means both top and bottom surfaces are ground to tolerance, allowing the parallel to be flipped for use in tight clearance situations. It is sold and packaged as an individual piece.

Key Features

• Parallelism of 0.0003 inches across the full 6-inch length
• Accuracy rating of 0.001 inches for reliable reference surface performance
• Hardened tool steel construction at 55-62 HRC resists wear and deformation
• Two face ground design allows use on either surface
• Compact 1/2-inch thickness suits narrow vise and fixture gaps
• Sold as an individual parallel for targeted replacement or addition to existing sets

Compatibility

Designed as a standard two face parallel suitable for use with precision milling vises, surface grinder magnetic chucks, and inspection surface plates where a 6-inch ground reference surface is required.

Installation Notes

Parallels are placed by machinists or tool room technicians and require no fastening. Before placing the parallel, clean all mating surfaces of chips, coolant, and debris to prevent false seating. Never use parallels as a striking surface or pry tool, as this can damage the ground faces and compromise accuracy. Periodically stone the surfaces lightly and check for burrs to maintain tolerance over time.