Value Collection MSC-04488128 Tap Set 7/8-9 Unc Hss

Product Description

The VALUE COLLECTION MSC-04488128 is a 3-piece tap set designed for cutting 7/8-9 UNC internal threads in metal workpieces. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, these taps deliver reliable cutting performance across a range of ferrous and non-ferrous materials. The 4-flute geometry provides strong chip evacuation and thread form accuracy. With an overall length of 4-11/16 inches and a thread length of 2-7/32 inches, the set is sized for standard production and maintenance threading operations. The H4 thread limit designation ensures consistent fit within standard UNC tolerance classes.

This tap set is suited for machine shops, maintenance facilities, and fabrication environments where 7/8-9 UNC threaded holes are required. The right-hand thread direction makes it compatible with conventional CNC machining centers, drill presses, and manual tapping setups. A 3-piece set typically includes taper, plug, and bottoming taps, allowing machinists to start, advance, and finish threads in both through-holes and blind holes.

Key Features

• Thread size: 7/8-9 UNC, right-hand direction
• High-speed steel construction for durability across common work materials
• 4-flute design for improved chip clearance and thread accuracy
• Bright uncoated finish suitable for use with cutting fluids
• H4 thread limit for standard UNC fit tolerances
• Overall length of 4-11/16 inches with 2-7/32 inches of thread length

Compatibility

Designed for cutting 7/8-9 UNC internal threads in standard tapping applications on manual and CNC equipment. No specific machine model compatibility was provided by the manufacturer.

Installation Notes

Taps in this size range are typically installed by machinists using a tap wrench, tapping head, or CNC rigid tap cycle. Always use an appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Ensure the workpiece is securely fixtured before beginning the threading operation. Inspect the tap for wear or chipping before each use and replace if cutting edges are damaged.