Value Collection 08904146 Counterbore Pilot Carbon Steel

Product Description

The VALUE COLLECTION 08904146 is a counterbore pilot used to guide counterboring tools during precision machining and metalworking operations. The pilot features a 7/32 inch head diameter and a 3/16 inch shank diameter, allowing it to seat accurately in pre-drilled holes and keep the counterbore concentric with the pilot bore. Constructed from carbon steel with a bright, uncoated finish, this pilot is suited for general-purpose shop use. It is commonly installed by machinists, maintenance mechanics, and tool-and-die workers performing countersinking and socket-head fastener seat preparation on metal workpieces.

This counterbore pilot is appropriate for use in manual mill operations, drill press setups, and bench machining applications where consistent hole alignment is required. It is sized to work with standard counterbore sets calling for a 3/16 inch shank and a 7/32 inch head. Typical applications include preparing seats for socket-head cap screws and similar fasteners in steel and general ferrous materials. The bright finish indicates no additional surface treatment, making it a straightforward mechanical fit component.

Key Features

• 7/32 inch head diameter for accurate counterbore seat alignment
• 3/16 inch shank diameter for standard counterbore tool compatibility
• Carbon steel construction suitable for general ferrous machining applications
• Bright, uncoated finish for consistent dimensional tolerances out of the box
• Compact and lightweight at 0.6 pounds for easy handling in tool storage or rotation

Compatibility

Designed as a replacement or spare pilot for standard counterboring tool sets requiring a 3/16 inch shank diameter and a 7/32 inch head diameter. No specific tool family or system compatibility was stated in the product data.

Installation Notes

Installation is performed by machinists or maintenance personnel with standard machine shop tooling. Ensure the milling machine, drill press, or similar equipment is fully powered down and the spindle is locked before seating or removing the pilot. Verify shank and head diameters match the counterbore body specifications before use to avoid runout or pilot damage. Refer to applicable shop safety standards and tool manufacturer guidelines for proper pilot retention and tool speeds.