Drillco 22MM-2.50 4FL Bottom Tap (28A220AB)
Drillco 28A220AB 22MM-2.50 4FL Bottom Tap is a precision-engineered straight flute hand tap designed to create clean, accurate threads in a wide variety of materials. Known for its versatility and reliability, this tap is commonly used in both manual and machine tapping operations. The bottoming geometry allows threading to the bottom of blind holes, making it ideal for applications where full thread depth is required. Made from premium grade high-speed steel and finished with a bright coating, it offers enhanced durability and smooth cutting performance. Featuring left-handed teeth rotated counterclockwise, it produces left-handed threads to meet specialized assembly needs. The standard square shank ensures easy compatibility with tap wrenches and powered machines, delivering efficient and precise thread cutting in demanding industrial environments.
Made from premium grade high-speed steel (HSS) for extended tool life
Geometry ideal for both through holes and blind holes
Available in taper, plug, and bottoming geometries for versatile applications
Bright finish enhances lubricity for smoother tapping
Left-handed teeth rotated counterclockwise to produce left-handed threads
Standard square shank compatible with standard sized tap wrenches
Enables precise thread forming in deep blind holes
Extended tool life with premium materials and coating
Suitable for both manual and production tapping applications
Capable of producing left-handed threads for specialized uses
Technical Specifications:
Type: 4-Flute Bottom Tap
Size: 22MM x 2.50
Geometry: Taper, Plug, and Bottoming
Material: Premium Grade High-Speed Steel (HSS)
Thread Direction: Left-handed
Shank: Standard Square
Application: General machine tapping for through and blind holes
Country of Origin: USA
Product identification
- Brand: Drillco
- Model / MPN: 28A220AB
