Value Collection JY4879094 Straight Flute Tap 2-12 Uns

Product Description

The VALUE COLLECTION JY4879094 is a straight flute tap designed for cutting 2-12 UNS internal threads in through-holes and blind holes where a bottoming chamfer is required. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, this tap delivers reliable performance in a wide range of ferrous and non-ferrous materials. The 6-flute configuration provides additional cutting edges for a cleaner, more stable thread form and helps distribute cutting forces evenly. With an overall length of 5 inches and a thread length of 2 inches, the tap is sized for production and maintenance threading operations on larger-diameter workpieces.

This tap is suited for machine tapping and hand tapping applications in manufacturing, maintenance, and repair environments. The bottoming chamfer — featuring only 1 to 2 lead threads — allows threading to be completed as close to the bottom of a blind hole as possible, making it the correct choice when full thread depth is required right to the base of the hole. The H6 thread limit designation indicates an oversize tolerance appropriate for use with standard tapping fluids and typical production fits. It is used by machinists, tool-and-die makers, and maintenance technicians across general metalworking applications.

Key Features

• 2-12 UNS thread form for non-standard unified thread series applications
• Bottoming chamfer enables threading to within 1-2 pitches of the bottom of a blind hole
• 6 flutes provide additional cutting edges for improved thread finish and cutting stability
• High-speed steel construction offers good wear resistance across a broad material range
• H6 thread limit supports standard production tolerances without oversizing
• Bright, uncoated finish suitable for use with cutting oils and standard tapping fluids
• Right-hand thread direction for standard machine and hand tapping setups

Compatibility

Designed as a standard replacement or production tap for any application requiring a 2-12 UNS internal thread with a bottoming chamfer finish. Compatible with standard tap holders, tap wrenches, and CNC tapping attachments sized for 2-inch nominal diameter taps.

Installation Notes

This tap should be installed by a qualified machinist or maintenance technician familiar with threading operations and proper tapping procedures. Ensure the workpiece is securely fixtured and the tap is correctly aligned with the pre-drilled hole before applying torque to avoid tap breakage. Always apply an appropriate cutting fluid or tapping oil during operation to reduce heat and extend tool life. Follow applicable shop safety procedures and consult tooling manufacturer guidelines for recommended cutting speeds when used in CNC or machine tapping applications.