Value Collection 30002 Sine Bar 5 Inch Hardened Steel

Product Description

The VALUE COLLECTION 30002 is a 5-inch sine bar used for precise angle measurement and setup in machining and inspection work. The bar measures 5 inches in length and 2 inches in width, with rolls spaced 5 inches center to center. Center-to-center accuracy is rated at 0.0002 inches, and parallelism tolerance holds to 0.0004 inches. Constructed from hardened steel, this tool is built to withstand repeated shop use without dimensional drift. Machinists, toolmakers, and quality technicians use sine bars when setting compound angles on surface plates or magnetic chucks. The included fitted case protects the bar and its precision surfaces during storage and transport.

This sine bar is suited for surface plate inspection setups, angle gauge block stacking, and machine tool setup in production and tool-room environments. It is appropriate for both layout work and quality control inspection where precise angular positioning is required. The 5-inch roll spacing is a standard dimension that simplifies sine calculations, making it compatible with standard gage block sets used in conventional trade and manufacturing shops.

Key Features

• 5-inch length with 5-inch center-to-center roll spacing for straightforward sine calculations
• Center-to-center accuracy of 0.0002 inches for reliable angle setup
• Parallelism tolerance of 0.0004 inches across the bar surface
• Hardened steel construction for dimensional stability and wear resistance
• Includes fitted case for protected storage of precision surfaces

Compatibility

Designed as a standard 5-inch sine bar for use with conventional gage block sets on surface plates in tool-room and inspection environments.

Installation Notes

Sine bars are set up by qualified machinists or metrology technicians on a clean, flat surface plate. Keep the precision surfaces free of burrs, chips, and oil film before use to maintain accuracy. Handle the bar with care to avoid dropping or striking the rolls, as impact damage will compromise accuracy. Store in the fitted case when not in use to prevent corrosion and surface wear.