Value Collection JY4843207 Straight Flute Tap 7/16-24 Uns

Product Description

The VALUE COLLECTION JY4843207 is a straight flute bottoming tap designed for cutting internal threads in through-holes and blind holes where threads must extend close to the bottom. Manufactured from high-speed steel with a bright/uncoated finish, this tap produces right-hand 7/16-24 UNS threads with 4 flutes and a thread limit of H3. The overall length is 3-5/32 inches. Bottoming chamfer geometry allows thread cutting to within one or two threads of the bottom of a blind hole, making this tap the final step in a standard two- or three-tap sequence. It is used by machinists, maintenance technicians, and tool-and-die professionals in metal fabrication and repair applications.

This tap is suited for threading steel, aluminum, and other machinable metals in production or maintenance environments. The 7/16-24 UNS thread form is a unified national special thread, commonly specified in aerospace, automotive, and precision mechanical assemblies where a fine pitch is required on a 7/16-inch diameter fastener. The H3 thread limit provides controlled oversize tolerance to account for tool wear and material springback, making it appropriate for tapping steel and other ferrous materials in moderate-tolerance applications.

Key Features

• Bottoming chamfer allows threading to the base of blind holes
• 4 straight flutes for chip clearance in through and blind hole applications
• High-speed steel construction provides durability across a range of machinable metals
• H3 thread limit provides controlled oversize tolerance for consistent thread fit
• Right-hand thread direction, compatible with standard tapping equipment
• Bright/uncoated finish — no coating thickness to account for in close-tolerance work

Compatibility

Designed as an OEM-style replacement or standard tooling selection for machines and fixtures requiring 7/16-24 UNS internal threads. Compatible with standard tap holders, tapping heads, and hand tap wrenches sized for 7/16-inch taps.

Installation Notes

Use of a bottoming tap requires a starter or plug tap to be run through the hole first to establish the thread form before the bottoming tap is applied. Secure the workpiece and ensure proper alignment to avoid tap breakage. Apply cutting fluid appropriate for the workpiece material to reduce friction and extend tap life. Follow all machine shop safety protocols, including the use of appropriate personal protective equipment when operating tapping equipment.