Irwin Hanson 1452 Straight Flute Tap 5/8-11 Unc Plug Chamfer

Product Description

The IRWIN HANSON 1452 is a straight flute tap designed to cut internal threads in through holes and shallow blind holes. It is ground to a 5/8-11 UNC thread form with a plug chamfer, which provides a gradual lead-in of 3 to 5 threads to ease starting and reduce torque demand. The 4-flute design offers good chip clearance in a range of ferrous and non-ferrous materials. Built from carbon steel with a bright, uncoated finish, this tap suits general-purpose threading work. Overall length is 3.8125 inches with a thread length of 1.813 inches and a shank diameter of 0.480 inches. Machinists, maintenance mechanics, and trade professionals use this tap in hand-tapping and low-speed machine applications.

This tap is intended for production and maintenance threading of 5/8-11 UNC holes in carbon steel, alloy steel, aluminum, and similar machinable materials. It is well suited for repair threading, fixture fabrication, and general shop work where a standard UNC thread form is required. The plug chamfer makes it a practical first choice when threading a clean, pre-drilled hole. It is sized for use in a standard tap wrench, T-handle, or drill press tapping head.

Key Features

• 5/8-11 UNC thread form with 2B class of fit for standard tolerance internal threads
• Plug chamfer (3-5 thread lead-in) for easier starting in pre-drilled through holes
• 4-flute configuration promotes chip clearance and cutting stability
• Carbon steel construction suited for general-purpose threading applications
• Bright, uncoated finish - no coating buildup to affect thread tolerance
• Right-hand thread direction, standard for the majority of fastener applications

Compatibility

Designed as a standard straight flute plug tap for general-purpose hand and machine tapping of 5/8-11 UNC internal threads in a variety of machinable materials.

Installation Notes

Always use the correct drill size for a 5/8-11 UNC thread before tapping - an undersized hole increases torque and risk of tap breakage. Power down any machine and secure the workpiece before beginning the tapping operation. Apply a cutting fluid appropriate to the workpiece material to reduce heat and extend tap life. Back off periodically when hand tapping to break chips and prevent tap seizure.