Value Collection JY4838322 Hand Tap 10-30 Uns

Product Description

The VALUE COLLECTION JY4838322 is a straight-flute hand tap designed for cutting internal threads in a 10-30 UNS thread form. Built from high speed steel with a bright, uncoated finish, it delivers the hardness and edge retention needed for threading steel, cast iron, and similar materials by hand. The plug chamfer — with a moderate lead-in of approximately 3 to 5 threads — makes it well suited for through-holes and most standard threading applications. At 2.375 inches overall length, this tap fits standard tap wrenches used in bench and field work. The Class 3B fit and H3 thread limit produce close-tolerance threads appropriate for precision fastener applications.

This tap is intended for hand-tapping operations in maintenance, repair, and manufacturing environments. It suits technicians and machinists working with UNS 10-30 thread specifications, which appear in specialty fastener and instrumentation applications. The 4-flute straight-flute geometry provides chip clearance in through-hole and shallow blind-hole configurations. A right-hand cutting direction is standard for conventional forward-threading use.

Key Features

• High speed steel construction for hardness and wear resistance across a range of workpiece materials
• Bright, uncoated finish — no added coating to affect tolerance build-up at the cutting edge
• Plug chamfer lead-in for versatile use in through-holes and standard-depth blind holes
• 4-flute straight-flute design supports chip flow and thread form accuracy
• Class 3B fit with H3 thread limit for close-tolerance internal thread production
• Right-hand thread direction — standard forward-cut operation

Compatibility

Designed for hand-tapping applications requiring a 10-30 UNS internal thread. Fits standard tap wrenches and T-handles sized for small-diameter taps.

Installation Notes

This tap is installed by hand using a tap wrench — power driving is not recommended for hand tap classifications. Secure the workpiece firmly before threading and apply cutting fluid appropriate for the workpiece material to reduce heat and extend tool life. Back the tap off periodically to break chips and prevent tap breakage, especially in deeper holes. Follow applicable shop safety practices when working with sharp cutting tools.