Value Collection JY4740288 1/4-28 Unf Plug Hand Tap Hss

Product Description

The VALUE COLLECTION JY4740288 is a 1/4-28 UNF straight-flute hand tap designed for cutting right-hand internal threads in a wide range of materials. Built from high speed steel (HSS) with a bright, uncoated finish, this tap delivers reliable performance in threading operations where manual or machine-assisted hand tapping is required. The plug chamfer (7-10 thread lead) makes it well-suited for through-hole applications, allowing the tap to start easily and cut progressively. With an H11 thread limit, it produces threads that are 0.0050 inches oversize, accommodating applications where plating or coating will be applied after threading. Overall length is 2.5 inches.

This tap is used in maintenance, repair, and manufacturing operations across metalworking, HVAC equipment fabrication, plumbing fixture work, and general mechanical assembly. It is appropriate for use in both shop and field environments where 1/4-28 UNF threads are required in through-hole configurations. Machinists, millwrights, pipefitters, and service technicians commonly use this style of tap when hand-threading steel, aluminum, brass, or similar materials. The 4-flute straight-flute design provides good chip clearance and consistent thread form in most machinable metals.

Key Features

• 1/4-28 UNF right-hand thread form for standard inch-series fine-thread applications
• Plug chamfer (7-10 lead threads) for easy starting in through-hole threading
• H11 thread limit produces threads 0.0050 inches oversize, suitable for post-threading plating or coating
• 4-flute straight-flute geometry provides consistent thread form and chip clearance
• High speed steel construction with bright, uncoated finish for general-purpose use
• 2.5 inches overall length fits standard tap wrenches and holders

Compatibility

Designed as a general-purpose hand tap for through-hole 1/4-28 UNF threading operations. Fits standard tap wrenches and holders sized for 1/4-inch tap shanks.

Installation Notes

This tap is intended for use by machinists, maintenance technicians, and trade professionals familiar with manual threading procedures. Ensure the workpiece is properly secured and the correct pilot hole diameter for a 1/4-28 UNF thread is drilled before tapping. Apply appropriate cutting fluid or tapping oil to extend tool life and improve thread quality. Advance the tap gradually, backing off periodically to break chips and prevent tap breakage.