Drillco bottoming tap details
Drillco 7/8-9 Nitro Bottoming Tap (20N156CB)
Drillco 20N156CB 7/8-9 Nitro Bottoming Tap is a robust and precise tool engineered for threading close to the bottom of blind holes. Its bottoming geometry makes it ideal for applications where maximum thread depth is essential. Designed for professional machinists and advanced DIY users, this tap combines high-speed steel construction with a Nitro treatment to deliver superior durability, wear resistance, and performance. Whether used in production environments or field work, it ensures clean, accurate threads in a wide variety of materials.
Bottoming geometry allows threading near the base of blind holes
High carbon content high-speed steel ensures long-lasting durability
Nitro treatment enhances hardness and wear resistance
Straight flute design aids in chip removal during tapping
Bright finish improves lubricity and reduces heat buildup
Standard square shank is compatible with common tap wrenches
Manufactured in the USA for premium quality and reliability
Ideal for threading close to the bottom in blind hole applications
Delivers consistent, clean threads with minimal risk of breakage
Suited for both hand tapping and machine tapping operations
Technical Specifications:
Thread Size: 7/8-9
Tap Type: Bottoming
Flute Type: Straight
Material: High-Speed Steel (HSS)
Treatment: Nitro
Shank Type: Square
Product identification
- Brand: Drillco
- Model / MPN: 20N156CB
