Value Collection 637-7036 Precision Parallel Set 8 Pc

Product Description

The VALUE COLLECTION 637-7036 is an 8-piece tool steel precision parallel set sold as 4 matched pairs, designed for layout work, machine setup, and workholding applications in metalworking environments. Each parallel is 6 inches long and 1/2 inch thick, with heights ranging from 1 inch to 1-3/4 inches in 1/4-inch increments. The parallels are manufactured from fine-quality tool steel that has been stress relieved, precision ground, and hardened to 55-62 RC for dimensional stability and resistance to distortion. Holes are incorporated into each piece to ease handling and setup. The set is stored and shipped in an included plastic case.

This parallel set is suited for use in machine shops and tool rooms where consistent, repeatable workpiece elevation and alignment are required. Typical applications include milling machine setup, surface grinding, inspection, and precision layout work. The four height increments allow machinists and tool makers to accommodate a range of workpiece and fixture configurations without stacking. Each pair provides matched height within tight tolerance, making them appropriate for use as precision standards and setup references.

Key Features

• 8 pieces (4 matched pairs) covering heights of 1 inch, 1-1/4 inches, 1-1/2 inches, and 1-3/4 inches
• Uniform 1/2-inch thickness across all pairs
• 6-inch length suitable for standard vise and fixture setups
• Tool steel construction, stress relieved and precision ground for distortion resistance
• Hardened to 55-62 RC for long-term dimensional stability
• Parallelism tolerance of 0.0003 inches; accuracy to 0.0010 inches
• Holes in each parallel for easier handling and setup positioning
• Includes plastic storage case to protect ground surfaces

Compatibility

Designed as a general-purpose precision parallel set for use with standard milling vises, surface grinders, inspection fixtures, and layout plates in metalworking and tool room applications.

Installation Notes

Precision parallels are a hand-placed workholding accessory and require no mechanical installation. Machinists should clean all mating surfaces before placing parallels to prevent contamination from chips or coolant from affecting setup accuracy. Ground surfaces should be protected from impact and stored in the included case when not in use to preserve flatness and parallelism tolerances. Periodic inspection against a known flat reference is recommended to verify surfaces remain within tolerance.