Hertel K008583AS Straight Flute Tap 11/16-11 Uns Hss

Product Description

The HERTEL K008583AS is a straight-flute bottoming tap designed for cutting internal threads in through-holes and blind holes where full thread engagement near the bottom is required. Built from high speed steel with a bright uncoated finish, this tap produces right-hand 11/16-11 UNS threads in a single pass. It features 4 flutes and an H3 thread limit for consistent tolerance control on medium-fit thread classes. With an overall length of 4-1/32 inches and a thread length of 1-13/16 inches, it fits standard tap holders and is suited for use in manual or machine tapping operations across a range of materials.

This tap is used in machining, maintenance, and repair applications where 11/16-11 UNS internal threads are required. The bottoming chamfer style — typically 1 to 2 threads of lead — allows threading to within one or two thread pitches of the bottom of a blind hole. It is appropriate for use in metalworking shops, field maintenance, and production environments. Machinists, tool and die makers, and maintenance technicians working with ferrous and non-ferrous materials in light to medium duty tapping applications are the primary users.

Key Features

• Bottoming chamfer for threading close to the bottom of blind holes
• High speed steel construction for durability across a range of workpiece materials
• 4 straight flutes for clean chip formation in through-hole and short blind-hole applications
• H3 thread limit for medium-fit tolerance control
• Bright uncoated finish — suitable for use with cutting fluid on most common metals
• Right-hand thread direction; no coolant-through feature

Compatibility

Designed as a standard replacement or production tap for applications requiring 11/16-11 UNS right-hand internal threads. Compatible with tap holders sized for a 0.542-inch shank diameter and a 0.406-inch square drive.

Installation Notes

This tap is installed by licensed machinists or qualified maintenance technicians using a tap wrench, tapping head, or CNC tap holder matched to the 0.542-inch shank. Ensure the workpiece is securely fixtured and the tap is aligned perpendicular to the hole before engagement to prevent tap breakage. Apply an appropriate cutting fluid for the workpiece material before and during tapping. For blind holes, clear chips frequently to prevent packing, which can cause tap breakage or thread damage.