Spi 21-245-6 Cone Contact Point Dial Indicator 4-48

Product Description

The SPI 21-245-6 is a cone-style contact point designed for use with dial indicators. It features a 4-48 thread size and a contact point length of 7/8 inches (0.8750 inches decimal). The contact tip diameter measures 1/64 inch, making it suited for precise measurement tasks in tight or angled contact surfaces. Constructed from black oxide steel, this contact point offers corrosion resistance and durability under repeated use. It meets AGD Group 1 industry designation standards, which define the dimensional and functional requirements for dial indicator accessories used in precision measurement applications.

This contact point is intended for use by machinists, quality control technicians, and tool and die professionals working with AGD Group 1 dial indicators. The cone geometry allows reliable contact on angled surfaces, edges, and small features where a flat or ball-style point would lose consistent contact. It is a direct-thread replacement contact point suitable for bench setups, surface plates, and fixture-mounted indicator applications common in manufacturing and inspection environments.

Key Features

• Cone contact point style for consistent contact on angled and irregular surfaces
• 4-48 thread size compatible with AGD Group 1 dial indicators
• Contact point length of 7/8 inches (0.8750 inches decimal)
• Tip diameter of 1/64 inch for fine-point measurement applications
• Black oxide steel construction for corrosion resistance and durability
• Meets AGD Group 1 industry designation standards

Compatibility

Designed for use with dial indicators requiring a 4-48 threaded contact point, conforming to AGD Group 1 industry designation standards.

Installation Notes

Installation is performed by machinists or metrology technicians using standard contact point installation tools for dial indicators. Thread the contact point carefully by hand first to avoid cross-threading the 4-48 thread. Do not overtighten, as the fine thread on precision indicator stems can be damaged by excessive force. Ensure the dial indicator is removed from active measurement setup before changing contact points.