Description

Drillco 28A390AT 39MM-4.00 6FL Taper Tap features straight flute “hand taps,” known for their versatility and popularity in general machine tapping operations. This taper tap is designed for efficient use in both production and hand tapping across a wide variety of materials, including steel, aluminum, brass, and plastics. The 6-flute design improves chip evacuation, while the taper geometry facilitates easy thread starting. Engineered for precision and durability, this tap ensures clean threads and reliable performance in demanding applications.

Features:

Made from general purpose high-speed steel (HSS) for versatile application
118° conventional point for rapid penetration and smooth threading
Bright finish optimized for drilling in non-ferrous materials such as aluminum
Jobber length designed for a wide range of tapping tasks
6-flute design enhances chip removal during tapping
Standard square shank for use with standard tap wrenches

Benefits:

Effective thread cutting with smooth engagement and minimal wear
Optimized for both through and blind hole tapping
Bright finish reduces friction and prevents galling in softer metals
Durable design extends tool life in production or hand use

Technical Specifications:

Model: 28A390AT
Size: 39MM x 4.00
Type: 6-Flute Straight Flute Taper Tap
Material: General Purpose High-Speed Steel (HSS)
Point Angle: 118° Conventional
Finish: Bright
Flutes: 6
Shank: Standard Square
Application: General machine tapping in various materials, especially non-ferrous
Country of Origin: USA