Value Collection JY4879151 Hand Tap 2-16 Uns Bottoming Hss

Product Description

The VALUE COLLECTION JY4879151 is a 2-16 UNS bottoming hand tap machined from high speed steel and finished bright uncoated. It is designed for cutting full threads to the bottom of blind holes in metal workpieces, making it the right tool when thread depth is critical and clearance is minimal. The tap features 6 straight flutes, a right-hand thread direction, a Class 3B fit, and an H6 thread limit for consistent tolerance control. Overall length is 5 inches. Licensed machinists and tool-and-die tradespeople use this tap in manual tapping operations on the bench or in a tapping fixture.

This tap is suited for threading 2-16 UNS holes in production and maintenance machining environments. The bottoming chamfer - typically 1 to 2 threads of lead - allows threading to the very bottom of a blind hole, a requirement common in threaded fastener bosses, jig fixtures, and tooling plates. It is appropriate for use in ferrous and non-ferrous metals where a high speed steel cutting tool provides adequate tool life. The bright uncoated finish makes it easy to inspect for wear during service.

Key Features

• Bottoming chamfer for threading to the bottom of blind holes
• 6-flute straight flute geometry for chip control in through and blind applications
• High speed steel construction provides hardness and wear resistance across common workpiece materials
• Bright uncoated finish allows direct visual inspection of cutting edges
• Class 3B fit with H6 thread limit for controlled tolerance output
• Right-hand thread direction, standard UNS thread form

Compatibility

Designed as a standard 2-16 UNS bottoming hand tap for use in manual tapping handles and tapping fixtures that accept straight-shank taps of this size and thread specification.

Installation Notes

Installation is performed by machinists or toolmakers using a tap wrench or tapping fixture. Ensure the workpiece is securely fixtured and the tap is aligned square to the hole before applying torque. Apply an appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Back the tap off periodically to break chips and prevent tap breakage in blind holes.