Value Collection MSC-04473211 Straight Flute Tap 7/16-20

Product Description

The VALUE COLLECTION MSC-04473211 is a straight flute bottoming tap designed for cutting internal threads in pre-drilled holes where the tap must reach close to the bottom of a blind bore. Manufactured from high-speed steel with a bright, uncoated finish, this tap is suited for general threading applications in ferrous and non-ferrous metals. It cuts a 7/16-20 UNF right-hand thread, features 4 flutes for efficient chip clearance, and carries an H3 thread limit for consistent tolerance control. Overall length is 3-5/32 inches with a thread length of 1-7/16 inches.

This tap is used in machining and maintenance environments where 7/16-20 UNF threads are required in through or blind holes. The bottoming chamfer — typically 1 to 2 thread leads — allows threading to within a few threads of the bottom of a blind hole, making it the correct choice when plug or taper taps have already started the thread and full depth is needed. Typical applications include automotive, hydraulic component repair, and general industrial fabrication. This tap is sold individually and is appropriate for both production and repair threading operations.

Key Features

• Bottoming chamfer allows threading close to the bottom of blind holes
• 7/16-20 UNF thread form for fine-pitch threading applications
• 4 straight flutes promote chip evacuation in shorter-length cuts
• H3 thread limit provides controlled oversize tolerance for consistent fit
• High-speed steel construction offers durability across a range of workpiece materials
• Bright, uncoated finish suitable for use with cutting fluid on most common metals

Compatibility

Designed as an OEM-style replacement or standard tooling option for any application requiring a 7/16-20 UNF bottoming tap with a 4-flute straight flute geometry and H3 thread limit.

Installation Notes

This tap is installed and operated by machinists, toolmakers, or maintenance technicians using a tap wrench, tapping head, or compatible CNC tapping attachment. Always secure the workpiece firmly and align the tap perpendicular to the drilled hole before applying torque. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Back the tap out periodically to break chips when tapping blind holes.