Value Collection MSC-04550281 Spiral Point Tap 1/4-28 Unf

Product Description

The VALUE COLLECTION MSC-04550281 is a spiral point tap designed for cutting internal threads in through-hole applications. Built from high speed steel (HSS) with a bright, uncoated finish, this tap drives chips forward ahead of the cutting zone, keeping the flutes clear and supporting consistent thread formation. It is configured with a plug chamfer, which provides a moderate lead-in suitable for most general-purpose through-hole tapping operations. With a 1/4-28 UNF thread size and a 1-inch thread length, it is suited for fine-thread work in metal fabrication, maintenance, and production environments.

This tap is used in through-hole tapping of ferrous and non-ferrous metals in light manufacturing, MRO maintenance, and machine shop applications. The right-hand thread direction and 2B class of fit make it compatible with standard fastener assemblies requiring UNF fine threads. The H4 thread limit accommodates plating allowances and tighter tolerance work where needed. It is typically operated in a drill press, CNC machining center, or tapping fixture, and is appropriate for use in both production and repair contexts.

Key Features

• Spiral point design pushes chips forward, ideal for through-hole tapping
• High speed steel construction provides durability across a range of metals
• Plug chamfer offers moderate lead-in for general-purpose through-hole use
• H4 thread limit supports applications requiring plating or tighter tolerances
• Bright, uncoated finish for direct use out of the box without additional prep
• Right-hand cutting direction, 2B class of fit for standard UNF fastener assemblies

Compatibility

Designed as a standard replacement or production tap for through-hole tapping applications requiring 1/4-28 UNF internal threads with a 2B class of fit.

Installation Notes

This tap should be installed and operated by machinists or qualified maintenance technicians familiar with tapping procedures and speeds for the workpiece material. Always ensure the workpiece is securely fixtured and that the correct pilot hole size for 1/4-28 UNF threads has been drilled before tapping. Apply appropriate cutting fluid to reduce heat and extend tap life. Do not force the tap or back-drive it under power without a torque-limiting or reversing tapping attachment.