Spi 1/8 Spi 10 Pr Thin Parallel Set 20 Piece

Product Description

The SPI 1/8" SPI 10 PR is a 20-piece thin parallel set designed for precision machining setups and workholding applications. Each parallel measures 6 inches in length and 1/8 inch in thickness, with a maximum height of 1-5/8 inches. The set is hardened to 52-58 HRC for long-term wear resistance and dimensional stability. Parallelism and accuracy are held to 0.0002 inches, making these parallels suitable for tight-tolerance work on mills, surface grinders, and inspection fixtures. Machinists and toolroom technicians are the primary users of this type of precision ground tooling.

This parallel set is used in machine shop environments for supporting and leveling workpieces in vises, on surface plates, and under clamps during milling and grinding operations. The thin 1/8-inch profile allows use in setups where standard-width parallels cannot fit. The set ships as 10 matched pairs, ensuring consistent height pairing across each parallel pair for repeatable setup work. The 20-piece count provides coverage across a range of setup heights within the 1-5/8 inch maximum range.

Key Features

• 20 pieces sold as 10 matched pairs for consistent setup heights
• Thin 1/8-inch thickness for tight-clearance workholding applications
• 6-inch length accommodates standard milling vise and fixture setups
• 52-58 HRC hardness for wear resistance and long service life
• Parallelism and accuracy held to 0.0002 inches for precision work
• Maximum height of 1-5/8 inches with 1/8-inch height increments

Compatibility

Designed as a general-purpose thin parallel set for use in machine shop vises, surface grinders, and inspection fixtures requiring a 1/8-inch thick profile parallel.

Installation Notes

Parallels should be cleaned and inspected for burrs or debris before each use to maintain accuracy. Handle with care to avoid dropping, which can alter ground surfaces and compromise parallelism. No power source or code compliance is required for parallel sets, but proper storage in a case or protective holder is recommended to prevent damage to precision ground surfaces.