Drillco 5/8-11 HSS Left Hand Bottom Tap (23A140CB)
Drillco 23A140CB 5/8-11 HSS Left Hand Bottom Tap is engineered for cutting precise counterclockwise (left-hand) threads, making it ideal for applications where right-hand threads may loosen due to vibration, reverse torque, or rotational forces. The bottoming chamfer design allows the tap to cut threads close to the bottom of a blind hole, making it an excellent choice for applications requiring maximum thread depth. Manufactured from premium-grade high-speed steel (HSS) and finished with a black oxide coating, this tap delivers exceptional durability, wear resistance, and smooth cutting performance in both CNC and manual operations.
5/8-11 left-hand bottoming tap for precise threading in blind holes
Constructed from premium-grade high-speed steel (HSS) for superior strength and longevity
Bottoming chamfer design enables threading close to the hole bottom
Standard square shank fits tap wrenches and machine holders for easy use
Black oxide finish enhances wear resistance and reduces friction
Made in the USA to meet strict quality and performance standards
Prevents loosening of fasteners in vibration-prone or reverse-rotation environments
Provides maximum thread depth in blind hole applications
Durable construction ensures a longer service life
Reliable for both manual and CNC tapping operations
Technical Specifications:
Thread Size: 5/8-11
Thread Direction: Left-hand
Tap Type: Bottoming
Material: Premium-grade high-speed steel (HSS)
Finish: Black oxide
Shank: Standard square
Application: Cutting left-hand threads in blind holes for maximum thread depth
Product identification
- Brand: Drillco
- Model / MPN: 23A140CB
