Value Collection 420-5420 V-block Set 90 Degree Hardened Steel

Product Description

The VALUE COLLECTION 420-5420 is a matched 2-block V-block set machined from hardened steel for precision workholding in layout, inspection, and grinding operations. Each block features a 90-degree V-angle and accepts round stock from 1/8 inch minimum up to 0.575 inch maximum capacity. Overall dimensions are 1-3/8 inches long by 1-3/8 inches wide by 1-3/16 inches tall. The set holds V parallelism to 0.0002 inch and squareness to 0.0002 inch, making it suitable for close-tolerance work on the surface plate or machine table. A clamp and wooden storage case are included.

This V-block set is used in machine shops, tool rooms, and metrology labs for holding cylindrical workpieces during scribing, drilling, grinding, and inspection. The matched pair allows a shaft or pin to be supported at two points simultaneously, ensuring accurate alignment. Typical users include machinists, tool-and-die makers, and quality control technicians who need repeatable, low-runout workholding for cylindrical parts up to 0.575 inch in diameter.

Key Features

• Hardened steel construction for wear resistance and long service life
• 90-degree V-angle accommodates a wide range of cylindrical workpiece diameters
• Maximum capacity of 0.575 inch; minimum capacity of 1/8 inch
• V parallelism held to 0.0002 inch for precise, repeatable positioning
• Squareness tolerance of 0.0002 inch supports accurate layout and inspection work
• Includes matching clamp and wooden case for organized storage and protection
• Sold as a 2-block matched set for dual-point workpiece support

Compatibility

Designed as a general-purpose matched V-block set suitable for use on standard surface plates and machine tables where cylindrical workpieces between 1/8 inch and 0.575 inch diameter require precise support and alignment.

Installation Notes

Place both blocks on a clean, flat surface plate or machine table and verify seating before clamping a workpiece. Secure the workpiece using the included clamp to prevent movement during layout or machining operations. Inspect block faces and the V-groove for burrs or debris before use, as contamination will affect precision. Store blocks in the included wooden case to protect ground surfaces between uses.