Hertel K014568AS Hand Tap 5/16-24 Unf Plug 4-flute Hss

Product Description

The HERTEL K014568AS is a 5/16-24 UNF straight-flute hand tap designed for cutting right-hand internal threads in a wide range of materials. Built from high speed steel (HSS) with a bright, uncoated finish, this tap runs a plug chamfer for general-purpose through-hole and blind-hole tapping. It carries an H11 thread limit, placing it in the oversize range at 0.005 inches above nominal - a specification critical for applications requiring plated or coated threads where the finished hole must hold tolerance after processing. With 4 flutes and a 2-23/32-inch overall length, the K014568AS is suited for hand tapping operations in production and maintenance environments.

This tap is used in machining, fabrication, and maintenance applications where 5/16-24 UNF threads are required. The plug chamfer makes it effective for starting threads in through holes or for following a taper tap in blind-hole work. The H11 oversize designation makes it particularly useful when threads will receive electroplating, powder coating, or similar surface treatments that add material inside the thread form. Typical users include machinists, tool-and-die workers, and maintenance technicians working with steel, aluminum, and similar machinable materials.

Key Features

• 5/16-24 UNF right-hand thread form for standard unified fine-pitch applications
• H11 thread limit with 0.005-inch oversize for plated or coated thread applications
• Plug chamfer - 3 to 5 thread lead - suitable for through holes and following in blind holes
• 4-flute straight-flute geometry for chip control in a variety of materials
• High speed steel construction for durability across general-purpose tapping
• Bright, uncoated finish - no additional coating buildup on the cutting edges

Compatibility

Designed as a general-purpose hand tap for 5/16-24 UNF threaded holes in standard tapping fixtures, T-handle tap wrenches, and similar hand-tapping toolholders.

Installation Notes

This tap is intended for hand tapping using a tap wrench and should be aligned perpendicular to the workpiece surface before starting the thread. Use a cutting fluid appropriate for the workpiece material to extend tool life and improve thread finish. Back off the tap periodically to break chips when working in blind holes. Never force a tap through resistance - back it off to clear chips before continuing.