Spi 630-42752 Angle Block Set 0.25 to 45 Deg 17 Pc

Product Description

The SPI 630-42752 is a 17-piece angle block set designed for precise angular measurement and setup work in machining, toolmaking, and inspection applications. The set covers a minimum angle of 0.25 degrees up to a maximum of 45 degrees, providing a wide range of angular reference values from a single kit. All blocks are hardened to 45-50 Rc, giving them the wear resistance needed for repeated use on surface plates, mill tables, and inspection fixtures. Two riser blocks are included to extend versatility during complex setups. This set is installed and used by machinists, tool and die makers, and metrology technicians.

This angle block set is suited for precision layout, part inspection, and workholding setups in both production and toolroom environments. The 0.25-degree minimum increment allows for fine angular adjustments that would be difficult to achieve with a standard sine bar alone. The 17-piece configuration provides enough block combinations to cover common angle requirements without requiring additional tooling. Typical use cases include grinding setups, CMM fixturing, and angular surface plate work in job shops and manufacturing facilities.

Key Features

• Angular range of 0.25 degrees to 45 degrees across 17 pieces
• Hardened to 45-50 Rc for long-term wear resistance
• Includes 2 riser blocks for extended setup configurations
• Compact 17-piece set covers a broad range of angular references
• Weighs 12 pounds, indicating solid, substantial steel construction

Compatibility

Designed as a general-purpose angle block set suitable for use on standard surface plates, magnetic chucks, and precision fixturing equipment common in toolroom and production machining environments.

Installation Notes

Angle blocks are set up and used by machinists and metrology technicians and require no permanent installation. Ensure the surface plate or work surface is clean and free of burrs before placing blocks to maintain angular accuracy. Handle hardened blocks carefully to avoid chipping ground surfaces. Store blocks in the provided case when not in use to protect lapped faces from damage and corrosion.