Value Collection JY4838280 Hand Tap 10-28 Uns Plug Hss

Product Description

The VALUE COLLECTION JY4838280 is a 10-28 UNS straight flute hand tap designed for cutting internal threads in a wide range of materials. Built from high speed steel (HSS) with a bright uncoated finish, this tap delivers consistent thread formation in ferrous and non-ferrous metals, plastics, and similar workpiece materials. The plug chamfer style features a gradual lead-in of approximately 3 to 5 threads, making it suitable for through-hole tapping where the tap can pass completely through the workpiece. The 4-flute straight flute geometry provides stability and reliable chip control in standard drilling and tapping operations. Overall length is 2.375 inches, fitting standard tap handles and machine tool collets used in machining and maintenance applications.

This tap is suited for machinists, maintenance technicians, and toolroom professionals performing thread repair or new thread creation in through-holes. The 10-28 UNS thread designation covers unified national special applications where 10-28 threading is specified. The Class 3B fit tolerance produces tight, accurate internal threads appropriate for close-tolerance assemblies. The H3 thread limit provides a controlled oversize tolerance to account for slight tap wear during cutting, making it a practical choice for production and job-shop environments alike.

Key Features

• 10-28 UNS thread form cuts unified national special internal threads to Class 3B fit
• Plug chamfer (3 to 5 thread lead) suited for through-hole tapping applications
• High speed steel construction provides hardness and wear resistance across common workpiece materials
• Bright uncoated finish allows direct inspection of tool condition and is compatible with standard cutting fluids
• 4-flute straight flute design delivers stable cutting geometry and consistent chip evacuation
• H3 thread limit compensates for normal tool wear to maintain thread accuracy over multiple uses

Compatibility

Designed as a standard hand tap for use in through-hole tapping operations requiring a 10-28 UNS thread form. Compatible with conventional tap handles and machine tapping chucks sized for this tap shank diameter.

Installation Notes

This tap is installed by a machinist or maintenance technician using a properly sized tap handle or tapping fixture. Secure the workpiece fully before tapping to prevent movement. Apply an appropriate cutting fluid for the workpiece material to reduce heat buildup and extend tool life. Advance the tap in short increments and periodically reverse direction to break chips and prevent tap breakage, particularly in deeper through-holes.