Value Collection JY99522757 Hand Plug Tap 8-32 Unc 4 Flute

Product Description

The VALUE COLLECTION JY99522757 is a 4-flute plug hand tap designed to cut internal threads to the 8-32 UNC standard. Made from high-speed steel with an oxide finish, this tap delivers reliable thread cutting performance in metal, plastic, and similar materials. The plug chamfer — typically 3 to 5 threads of taper — makes it suited for through-holes and moderately deep blind holes where a starting taper is acceptable. With an overall length of 6 inches and an H3 thread limit, it produces threads with the tolerance class required for standard fastener fits. Machinists, tool-and-die workers, and maintenance technicians commonly use this tap for hand tapping operations with a tap wrench or tap handle.

This tap is intended for hand tapping applications where an 8-32 UNC thread is required. The UNC thread form is one of the most common inch-series thread standards and is widely used in general mechanical assembly, light fabrication, and repair work across industrial, HVAC, electrical, and plumbing trades. The H3 thread limit is appropriate for standard class 2B fits used in most commercial fastener applications. The 4-flute design provides good chip clearance and balanced cutting action during manual threading operations.

Key Features

• 8-32 UNC thread form for common inch-series fastener applications
• Plug chamfer with 3 to 5 threads of taper — suitable for through-holes and moderate blind holes
• 4-flute geometry for balanced cutting and chip clearance during hand tapping
• High-speed steel construction for durability across a range of workpiece materials
• Oxide finish provides light corrosion resistance and reduces friction during cutting
• H3 thread limit for standard class 2B thread fits

Compatibility

Designed as a standard hand tap for use with any tap wrench or tap handle that accepts the appropriate square drive shank for an 8-32 UNC plug tap.

Installation Notes

This tap is installed by a machinist or maintenance technician using a tap wrench or T-handle tap wrench with the workpiece securely fixtured or clamped. Apply a suitable cutting fluid for the workpiece material to reduce heat and extend tool life. Back the tap off periodically during threading to break chips and prevent tap breakage. Inspect the tap for wear or chipping before each use, as a damaged tap can result in broken fasteners or stripped threads.