Value Collection MSC-04489308 Straight Flute Tap 1-1/8-7 Unc

Product Description

The VALUE COLLECTION MSC-04489308 is a straight flute tap designed for cutting 1-1/8-7 UNC internal threads in ferrous and non-ferrous materials. Built from high-speed steel with a bright/uncoated finish, this plug chamfer tap is suited for through-hole and moderate-depth blind-hole threading applications. The H4 thread limit provides controlled oversize tolerance for plated or tight-tolerance work. With 4 flutes and a right-hand thread direction, it delivers stable cutting action and reliable chip clearance in production and maintenance threading operations.

This tap is used in machine shop, maintenance, and fabrication environments where 1-1/8-7 UNC threads are required. The plug chamfer style, with its standard 3-5 thread lead-in, makes it appropriate for through-holes or blind holes with sufficient thread runout. It is commonly used in manual tapping machines, drill presses with tapping attachments, and CNC machining centers where a rigid tapping cycle is available. The 3B class of fit suits standard fastener assemblies requiring a free-running thread engagement.

Key Features

• 1-1/8-7 UNC thread form with right-hand cutting direction
• Plug chamfer provides 3-5 thread lead-in for through-hole and open blind-hole use
• H4 thread limit for controlled tolerance on plated or close-tolerance applications
• High-speed steel construction handles a wide range of workpiece materials
• Bright/uncoated finish suitable for general-purpose threading with appropriate cutting fluid
• 4-flute design promotes stability and chip clearance during cutting

Compatibility

Designed as a standard-shank straight flute tap for use in manual or machine tapping setups that accept tooling sized for 1-1/8-7 UNC plug taps.

Installation Notes

A licensed machinist or qualified maintenance technician should perform tapping operations. Always secure the workpiece and ensure the tap is properly aligned with the drilled hole before beginning. Use an appropriate cutting fluid for the workpiece material to reduce heat and extend tap life. Inspect the tap for wear or chipping before each use and never force a tap that has stopped turning freely.