Value Collection JY63328454 Spiral Flute Tap 3/4-10 Unc

Product Description

The VALUE COLLECTION JY63328454 is a spiral flute tap designed for cutting internal threads in blind holes and bottomed applications. Built from high-speed steel with a bright, uncoated finish, it cuts a 3/4-10 UNC thread profile with a bottoming chamfer that threads nearly to the bottom of a drilled hole. The tap runs 4.25 inches overall length, features 4 right-hand flutes with a fast flute style, and carries an H3 thread limit for consistent tolerance. A 45-degree helix angle moves chips up and out of the hole efficiently, making it well suited for gummy or ductile materials.

This tap is intended for use in aluminum, brass, copper, magnesium, and zinc die cast materials. The bottoming chamfer design makes it the right choice when a plug or taper tap has already started the thread and the job requires threading as close to the bottom of a blind hole as possible. It is used in machine shops, maintenance facilities, and field service environments wherever a 3/4-10 UNC fastener must be threaded into a blind bore.

Key Features

• Bottoming chamfer for threading to the bottom of blind holes
• High-speed steel construction handles a broad range of non-ferrous metals
• 45-degree helix angle promotes efficient chip evacuation in ductile materials
• H3 thread limit provides consistent tolerance control on 3/4-10 UNC threads
• Right-hand flute direction matches standard right-hand thread cutting
• Bright, uncoated finish — no coating buildup to interfere with close-tolerance work

Compatibility

Designed for cutting 3/4-10 UNC internal threads in aluminum, brass, copper, magnesium, and zinc die cast workpieces. Suitable for use with standard 3/4-10 tap holders and machine tool spindles sized for this tap body diameter.

Installation Notes

This tap is installed and operated by a qualified machinist or maintenance technician using a compatible tap holder, tapping head, or CNC machine. Always secure the workpiece and ensure the tap is aligned axially with the drilled hole before beginning the cut. Use an appropriate cutting fluid for the workpiece material to reduce heat and extend tap life. Back the tap out periodically to clear chips when working in blind holes, and do not exceed the recommended torque range for the tap size to avoid breakage.