Hertel K014635AS 3/4-16 Unf Plug Tap 4 Flute Hss

Product Description

The HERTEL K014635AS is a straight-flute plug tap ground from high speed steel and finished bright/uncoated for general-purpose internal threading. It cuts a 3/4-16 UNF right-hand thread and carries 4 flutes for efficient chip evacuation in through-hole and moderate blind-hole applications. The plug chamfer — typically 3 to 5 threads of lead — allows the tap to start easily while still threading close to the bottom of a hole. With a 2-inch thread length and a 4.25-inch overall length, this tap fits standard tap wrenches and machine holders sized for a 0.590-inch shank. Licensed machinists, maintenance technicians, and tool-room operators are the primary users.

This tap is suited for threading ferrous and non-ferrous materials in both manual and CNC tapping operations where a bright, uncoated tap is appropriate. The H11 thread limit designates a tighter ground tolerance class, making it a common choice when thread fit and dimensional accuracy are critical. The oversize designation indicates the tap is ground 0.0050 inches over nominal to compensate for material spring-back in harder workpieces.

Key Features

• 3/4-16 UNF right-hand thread form with plug chamfer for easy starting
• 4 straight flutes for chip clearance in through-hole and shallow blind-hole threading
• H11 thread limit for tight tolerance thread production
• Ground oversize by 0.0050 inches to account for material spring-back
• High speed steel construction for durability across a range of workpiece materials
• Bright/uncoated finish compatible with most cutting fluids and tapping compounds

Compatibility

Designed as a standard replacement or toolroom tap for any machine or hand tapping setup that accepts a 0.590-inch diameter, 0.442-inch square-drive shank and requires a 3/4-16 UNF plug tap.

Installation Notes

Always secure the workpiece and use the appropriate tap wrench or machine holder before beginning the tapping operation. Apply a suitable cutting fluid or tapping compound to extend tool life and improve thread finish. Back the tap off periodically to break and clear chips, especially in blind-hole applications. Follow applicable shop safety procedures and ensure spindle speed is appropriate for the workpiece material when machine tapping.