Value Collection JY4840484 Straight Flute Tap 1/4-48 Uns

Product Description

The VALUE COLLECTION JY4840484 is a straight flute tap designed for cutting internal threads to a 1/4-48 UNS specification. It is manufactured from high-speed steel and carries a bright, uncoated finish. With 4 flutes and a plug chamfer, this tap is suited for through-hole and moderately deep blind-hole threading applications. The H3 thread limit and 3B class of fit make it appropriate for standard tolerance threaded assemblies. Overall length is 2.5 inches. This tap is used by machinists, maintenance technicians, and tool-and-die professionals working with precision threaded components.

This tap is used in applications requiring fine-pitch UNS threading at 1/4 inch diameter. The plug chamfer style — typically featuring 3 to 5 chamfered lead threads — makes it well suited for starting threads in through-holes or for continuing threads after a taper tap has been used. Right-hand thread direction covers the vast majority of standard fastener applications. It is commonly used in machine shops, maintenance and repair operations, and light manufacturing environments where non-standard UNS thread forms are specified.

Key Features

• 1/4-48 UNS thread form for non-standard fine-pitch threading requirements
• High-speed steel construction provides durability across a range of ferrous and non-ferrous materials
• 4-flute design provides good chip clearance and thread form accuracy
• Plug chamfer allows use as a starting tap in through-holes or a follow-up tap in blind holes
• H3 thread limit with 3B class of fit for standard tolerance threaded assemblies
• Bright, uncoated finish — no coating interference with tight-tolerance thread dimensions

Compatibility

Designed as an OEM-style replacement or direct-use straight flute tap for applications requiring 1/4-48 UNS right-hand internal threads in standard 3B fit tolerances.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tap wrench, tapping head, or CNC tapping cycle. The workpiece should be properly fixtured and a correctly sized tap drill hole prepared before use. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Never force the tap — back it off periodically to break chips and prevent tap breakage.