Value Collection MSC-04489324 Straight Flute Tap 1-1/8

Product Description

The VALUE COLLECTION MSC-04489324 is a straight flute tap designed for cutting 1-1/8-7 UNC internal threads in a wide range of materials. Built from high-speed steel with a bright, uncoated finish, this tap delivers reliable performance in general-purpose threading applications. The taper chamfer eases entry into the workpiece, making it well-suited for through-hole threading operations. With 4 flutes and an H4 thread limit, it produces 3B class of fit threads that meet standard tolerance requirements. The overall length is 5.4375 inches, and the thread length is 2.5625 inches. Right-hand thread direction is standard. Machinists and maintenance professionals rely on this tap for production and repair threading tasks.

This tap is used in machine shops, manufacturing facilities, and maintenance environments where large-diameter UNC threading is required. The taper chamfer style makes it ideal for starting threads in through-holes. It is appropriate for use in manual tapping, drill press setups, and CNC tapping operations where a straight flute geometry is preferred. The 1-1/8-7 UNC size is commonly encountered in heavy equipment, structural fastener applications, and industrial machinery repair work.

Key Features

• 1-1/8-7 UNC thread size with 4 straight flutes for controlled chip flow
• Taper chamfer for easy thread entry in through-hole applications
• High-speed steel construction for durability across a range of work materials
• Bright, uncoated finish suitable for general-purpose threading
• H4 thread limit produces 3B class of fit threads
• Right-hand thread direction, no coolant-through feature

Compatibility

Designed as a standard straight flute tap for through-hole 1-1/8-7 UNC threading operations in general machining and maintenance applications.

Installation Notes

Tapping should be performed by a qualified machinist using appropriate cutting fluid or tapping compound for the workpiece material. Ensure the workpiece is securely fixtured and the tap is properly aligned before beginning the threading operation. For manual tapping, use a quality tap wrench sized for large-diameter taps and back off periodically to break chips. Inspect the tap for wear or damage before each use to avoid thread quality issues or tap breakage.