Value Collection JY8962565 Straight Flute Tap 7/8-9 Unc

Product Description

The VALUE COLLECTION JY8962565 is a straight flute tap designed to cut 7/8-9 UNC right-hand internal threads in a wide range of workpiece materials. Made from high-speed steel (HSS) with a bright, uncoated finish, this 4-flute tap features a plug chamfer with 3 to 5 chamfered threads, making it suited for through-holes and blind holes with adequate depth. At 4-11/16 inches overall length, it fits standard tap wrenches and machine spindles. The thread limit is H11, and the tap is manufactured oversize by 0.0050 inches to compensate for tool wear and produce threads within tolerance over an extended service life.

This tap is used in machine shops, maintenance facilities, and field repair applications where 7/8-9 UNC threads need to be cut or restored. Plug chamfer taps are the most common starting point for general tapping work, balancing entry ease with thread engagement. The tap is well suited for hand tapping or low-speed machine tapping in ferrous and non-ferrous materials. Machinists, maintenance mechanics, and tool-and-die trades are the primary users of this type of tooling.

Key Features

• 7/8-9 UNC thread form, right-hand cut, for standard unified coarse thread applications
• Plug chamfer (3 to 5 threads) provides a balance of easy starting and full thread engagement
• 4-flute straight flute geometry for strength and chip clearance in through and blind holes
• High-speed steel construction provides durability across a broad range of materials
• H11 thread limit with 0.0050-inch oversize allowance helps maintain tolerance over repeated use
• Bright, uncoated finish suitable for use with cutting fluids in general-purpose applications

Compatibility

Designed as a general-purpose replacement or stock tap for applications requiring 7/8-9 UNC straight flute tapping in standard tap wrench or machine tool holders.

Installation Notes

This tap should be installed in a properly sized tap wrench or machine tap holder before use. Always apply appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Secure the workpiece firmly and align the tap perpendicular to the hole before starting the cut. Follow applicable shop safety practices and wear eye protection when tapping.