Spi 91-316-0 Adjustable Angle Block Tool Steel

Product Description

The SPI 91-316-0 is a precision adjustable angle block machined from tool steel and hardened to 50-55 Rc for long-term dimensional stability under shop conditions. The block adjusts from 0 to 60 degrees with a 90-degree V-angle and delivers 10-minute angular accuracy, making it suitable for layout, inspection, and setup work on surface plates or machine tool tables. It measures 3.75 inches long by 1.1875 inches wide by 2 inches high and weighs 5 pounds. Machinists, toolmakers, and metrology technicians use this block when precise angular reference is required for part setup or inspection fixtures.

This angle block is suited for precision metalworking environments including tool and die shops, machine shops, and quality control departments. It serves as a reliable angular reference for milling, grinding, and inspection setups where repeatable angle positioning is critical. The hardened tool steel construction resists wear from repeated use in production and job-shop settings alike.

Key Features

• Adjustable angle range of 0 to 60 degrees for versatile setup configurations
• 10-minute angular accuracy for precise layout and inspection work
• Tool steel construction hardened to 50-55 Rc for wear resistance and long service life
• 90-degree V-angle for stable workpiece referencing
• Compact block profile at 3.75 x 1.1875 x 2 inches fits standard surface plates and magnetic chucks

Compatibility

Designed as a general-purpose adjustable angle reference block for use with standard surface plates, sine bars, and machine tool setups in precision metalworking applications.

Installation Notes

This block is a metrology and setup tool, not a permanently installed component. Position it on a clean, flat surface plate or machine table, ensuring contact surfaces are free of burrs and debris before use. Handle hardened steel blocks with care to avoid edge chipping. No power lockout procedures are required, but always secure the workpiece and block assembly before initiating any machining operation.