Hss bottoming tap details
Drillco 1"-8 HSS Bottoming Tap (20A164CB)
Drillco 20A164CB 1"-8 HSS Bottoming Tap – 2000 Series is engineered for precision threading in blind holes where maximum thread depth is required. This bottoming tap, part of the Straight Flute “Hand Taps” product line, features a short chamfer lead designed to thread close to the bottom of holes. Made from general-purpose high-speed steel (HSS) with a black oxide finish, it offers enhanced wear resistance and durability for both hand and machine tapping applications across a wide range of materials.
Made from general-purpose high-speed steel (HSS) for strength and durability
Straight flute design suitable for hand and machine tapping
Bottoming chamfer with 1–2 thread lead for threading near hole bottoms
Black oxide surface treatment improves tool life and reduces friction
118° conventional point for rapid penetration
Jobber length ideal for most standard applications
Ideal for blind holes requiring full thread depth
Reliable performance across a variety of low- and medium-strength materials
Durable and long-lasting tool for industrial and workshop use
Provides smooth, accurate threading with minimal effort
Technical Specifications:
Thread Size: 1"-8 UNC
Type: HSS Bottoming Tap
Material: High-Speed Steel (HSS)
Flute Type: Straight Flute
Shank Type: Round
Tip Style: Bottoming Chamfer
Surface Treatment: Black Oxide
Point Angle: 118° Conventional
Product identification
- Brand: Drillco
- Model / MPN: 20A164CB
