Value Collection JY4862215 Hand Tap 1-1/8-20 Uns

Product Description

The VALUE COLLECTION JY4862215 is a straight-flute hand tap designed for cutting 1-1/8-20 UNS internal threads in through-holes and blind holes where full thread depth to the bottom of the bore is required. Manufactured from high speed steel with a bright, uncoated finish, this bottoming-chamfer tap is the final tap in a standard tapping sequence. It features six flutes for improved chip clearance and cutting efficiency in a range of ferrous and non-ferrous materials. Overall length is 4 inches, and the tap is ground to a Class 3B fit with an H4 thread limit for close-tolerance threading work.

This tap is suited for maintenance, repair, and production threading applications in machine shops, toolrooms, and fabrication environments. The UNS thread form and bottoming chamfer make it appropriate for situations where standard thread forms do not apply and full thread engagement to the bottom of a blind hole is necessary. Machinists, tool-and-die makers, and maintenance technicians are the primary users of this tap.

Key Features

• Bottoming chamfer allows threading to the bottom of blind holes
• Six-flute design improves chip evacuation and cutting stability
• High speed steel construction provides durability across a range of workpiece materials
• Bright, uncoated finish suitable for use with cutting fluids
• Class 3B fit with H4 thread limit for close-tolerance thread accuracy
• Right-hand thread direction; standard non-oversize geometry

Compatibility

Designed for cutting 1-1/8-20 UNS right-hand internal threads; intended as the bottoming tap in a hand-tapping sequence following taper and plug tap passes where applicable.

Installation Notes

This tap is intended for hand tapping and should be used with an appropriate tap wrench. Secure the workpiece before tapping, and apply a suitable cutting fluid to reduce friction and extend tool life. Advance the tap slowly and back off periodically to break chips. Inspect the tap for wear or chipping before each use; a damaged tap can cause thread damage or tap breakage in the bore.