Drillco 20E156FS 7/8-14 HSS Tap Set H-4 is a comprehensive straight flute hand tap set designed for a broad range of threading tasks. This set includes taper, plug, and bottoming taps to cover every stage of the tapping process. Made from premium high-speed steel (HSS) with H-4 hardness, these taps provide enhanced strength and wear resistance. The bright finish helps reduce friction and improves chip flow for smoother operation. Featuring a standard square shank, each tap is compatible with most common tap wrenches. Manufactured in the USA, this set is reliable for both machine and manual tapping in various materials.
Features:
- Includes taper, plug, and bottoming taps for full-thread coverage.
- Constructed from premium HSS with hardness class H-4 for durability.
- Straight flute design suitable for diverse general-purpose applications.
- Bright finish reduces friction and enhances chip evacuation.
- Standard square shank compatible with most tap holders and wrenches.
- Effective across a wide range of material groups.
Benefits:
- Versatile tap set covering all tapping stages.
- Reliable in both hand and production tapping environments.
- Improved tool longevity due to premium material and finish.
- Easy to integrate with standard tooling setups.
Technical Specifications:
- Model: 20E156FS
- Thread Size: 7/8-14
- Type: Tap Set (Taper, Plug, Bottoming)
- Material: High-Speed Steel (HSS)
- Finish: Bright
- Shank: Square
- Hardness Class: H-4
- Country of Origin: USA








