Value Collection 630-4301 Angle Block 1 Degree 55 Hrc

Product Description

The VALUE COLLECTION 630-4301 is a hardened steel angle block used for precision setup, inspection, and machining operations. It holds a fixed 1-degree angle and measures 3 inches in overall length. With a hardness rating of 55 HRC and an angular accuracy of 20 arc seconds, this block delivers repeatable positioning performance on surface plates, milling machines, and inspection fixtures. Machinists, toolmakers, and quality technicians use angle blocks like this one to set compound angles, check workpiece geometry, and establish reference planes during part setup.

This angle block is suited for general precision metrology and machining applications in job shops, production environments, and tool rooms. The 1-degree fixed angle makes it useful for applications requiring slight angular offsets that standard square or sine bar setups do not easily achieve. It is sold individually and is appropriate wherever a compact, shop-grade angle reference is needed for low-angle positioning tasks.

Key Features

• Fixed 1-degree angle for low-angle setup and inspection work
• 55 HRC hardness for wear resistance and long service life
• 20 arc second angular accuracy for repeatable precision positioning
• 3 inch overall length fits standard surface plates and fixture setups
• Sold as a single unit, no minimum multi-pack required

Compatibility

Designed as a general-purpose angle reference block for use with surface plates, magnetic chucks, milling machine tables, and inspection fixtures in standard machine shop and metrology environments.

Installation Notes

Angle blocks are positioned and clamped by hand or secured with straps and clamps on a surface plate or machine table — no special tooling is required for basic setup use. Keep mating surfaces clean and free of burrs before placing the block to maintain angular accuracy. Handle hardened blocks carefully to avoid chipping edges on hard surfaces. Consult applicable shop standards or ASME B89 metrology guidelines for formal inspection setups.