Value Collection JY4840757 1/4-80 Plug Hand Tap Hss

Product Description

The VALUE COLLECTION JY4840757 is a 1/4-80 straight flute hand tap designed for cutting internal threads in through-holes and blind holes. It is a plug chamfer style, meaning it has a moderate lead-in that suits general-purpose hand tapping in a variety of materials. Manufactured from bright high speed steel, this tap provides solid wear resistance for threading ferrous and non-ferrous metals. The 4-flute straight flute design channels chips efficiently during the cut. The overall length is 2.5 inches. Right-hand cutting direction and a 3B tolerance class ensure thread fit within standard UNS specifications for precision assemblies.

This tap is suited for machine shops, toolrooms, maintenance facilities, and field repair applications where a 1/4-80 UNS thread is required. The plug chamfer style makes it a practical choice for most standard through-hole and moderate-depth blind-hole threading jobs. Machinists, toolmakers, and maintenance technicians typically use this tap with a standard tap wrench or tap handle. Its compact 2.5-inch overall length fits comfortably in hand-tapping setups across a wide range of workpiece sizes.

Key Features

• 1/4-80 UNS thread form with right-hand cutting direction
• Plug chamfer style for general-purpose through-hole and blind-hole threading
• 4-flute straight flute geometry for efficient chip clearance
• Bright high speed steel construction for wear resistance across common metals
• 3B tolerance class for standard UNS thread fit
• H2 tap limit for controlled thread tolerance

Compatibility

Designed as a standard hand tap for use in any application requiring a 1/4-80 UNS internal thread. Verify workpiece material hardness and tap drill size against published UNS threading charts before use.

Installation Notes

Hand tapping should be performed by a machinist or qualified technician using a properly sized tap wrench. Ensure the tap is started square to the workpiece to avoid thread misalignment or tap breakage. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Back the tap off periodically during threading to break and clear chips, especially in blind-hole applications.