Kennametal 5416892 Spiral Point Tap 5/16-24 Unf Hss-e

Product Description

The KENNAMETAL 5416892 is a spiral point tap designed for through-hole threading in production and maintenance machining environments. It cuts a 5/16-24 UNF right-hand internal thread and is manufactured from HSS-E (high-speed steel with cobalt) with an oxide coating to reduce friction and extend tool life. The plug chamfer provides a gradual lead-in suitable for through-hole applications. The tap measures 2.72 inches overall length with a thread length of 0.69 inches and carries an H3 thread limit for a 3B class of fit. Machinists, toolroom technicians, and production operators in metalworking shops are the primary users.

This tap is suited for threading steel, stainless steel, and cast iron workpieces in through-hole configurations. The spiral point design pushes chips forward ahead of the cutting action, making it well matched to CNC tapping cycles and hand-feed tapping in production settings where chip evacuation ahead of the tap is practical. The T820 series designation indicates KENNAMETAL KSP39 material grade. It is applicable in both manual and machine tapping operations where a 5/16-24 UNF thread form is required.

Key Features

• Spiral point geometry pushes chips forward, reducing chip packing in through-hole applications
• HSS-E construction provides increased toughness and heat resistance compared to standard HSS
• Oxide coating reduces friction and provides corrosion resistance during storage and use
• Plug chamfer with 3-4 thread lead-in for smooth entry into through-hole workpieces
• H3 thread limit produces a 3B class of fit for standard UNF tolerance requirements
• Right-hand thread direction compatible with standard tapping equipment and tap handles

Compatibility

Designed for through-hole threading in steel, stainless steel, and cast iron. Compatible with standard 5/16-24 UNF through-hole tapping applications using tap handles, tapping heads, or CNC rigid tapping cycles. Shank diameter is 0.318 inches with a neck length of 0.45 inches.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician familiar with tapping speeds and feeds for the workpiece material. Secure the tap in a properly sized tap wrench, floating tap holder, or rigid tapping chuck before use. Ensure the starting hole is drilled to the correct tap drill size for a 5/16-24 UNF thread before beginning the tapping operation. Apply appropriate cutting fluid for the workpiece material and never force the tap against resistance to avoid breakage.