Hertel K010348AS Thread Forming Tap 10-24 Unc Plug Hss

Product Description

The HERTEL K010348AS is a thread forming tap designed to cut 10-24 UNC internal threads using a plug chamfer profile. Unlike cutting taps, thread forming taps displace material rather than removing chips, producing stronger threads with a burnished finish. Made from high-speed steel with a bright, uncoated finish, this tap is suited for use in ductile metals and softer alloys where cold-forming is practical. It measures 2.375 inches overall length with a thread length of 0.875 inches and carries an H4 thread limit for controlled fit tolerance. A licensed machinist or tool and die technician is the typical installer.

This tap is intended for through-hole threading applications in production and maintenance machining environments. The plug chamfer with 3 to 5 chamfered threads provides a gradual lead-in that distributes forming load across multiple threads, making it well suited for CNC tapping centers and hand tapping where consistent thread form is required. Its compact shank diameter of 0.194 inches fits standard tap holders for this size range. Typical use cases include threading steel brackets, aluminum housings, and similar components in light manufacturing, HVAC equipment assembly, and general metalworking shops.

Key Features

• Thread forming design displaces material rather than cutting chips, producing stronger threads
• Plug chamfer with 3 to 5 chamfered threads for gradual thread engagement and reduced starting torque
• High-speed steel construction offers good wear resistance across a range of workpiece materials
• H4 thread limit provides controlled tolerance for consistent fit in production runs
• Right-hand thread direction, compatible with standard tap handles and CNC tapping attachments
• Bright uncoated finish suitable for use with standard tapping fluids and cutting oils

Compatibility

Designed as an OEM-style replacement or direct-use thread forming tap for 10-24 UNC through-hole applications in standard tap holders and CNC tapping heads accepting a 0.194-inch shank diameter.

Installation Notes

Thread forming taps require proper tapping fluid or cutting oil suited to the workpiece material to prevent galling and premature wear. Secure the workpiece and ensure the tap is driven straight and perpendicular to the hole centerline before applying torque. For CNC applications, verify spindle speed and feed rate are matched to the thread pitch and material. Always follow shop safety protocols and wear appropriate eye protection when tapping by hand or machine.