Accupro T1620502B Spiral Point Tap 3/8-24 Vanadium Hss

Product Description

The ACCUPRO T1620502B is a spiral point tap designed for cutting internal threads in through-hole applications. It features a 3/8-24 UNF thread form with a plug chamfer and a 2B class of fit, making it suitable for standard fastener-thread tolerances. Manufactured from 3% vanadium high speed steel with an oxide finish, it offers improved wear resistance and lubricity compared to standard M2 HSS taps. The tool has an overall length of 2.9375 inches and a 24 mm thread length. Licensed machinists and maintenance technicians use this tap in manual and CNC tapping operations where consistent thread quality is required.

This tap is commonly used in job shop, maintenance, and production environments where 3/8-24 UNF threads are required in ferrous and non-ferrous materials. The vanadium HSS construction makes it particularly well-suited for stainless steel applications, where toughness and edge retention are critical. The spiral point design pushes chips forward ahead of the cutting action, making it effective in through-hole tapping on manual machines, drill presses, and CNC machining centers.

Key Features

• 3/8-24 UNF thread form with 2B class of fit for standard tolerance thread cutting
• 3% vanadium high speed steel construction for increased toughness and wear resistance
• Spiral point geometry pushes chips forward, reducing clogging in through-hole applications
• Plug chamfer provides a gradual lead-in, balancing cutting load across multiple threads
• Oxide finish improves lubricity and helps reduce heat buildup during cutting
• Right-hand thread direction; compatible with standard tapping attachments and holders

Compatibility

Designed for cutting 3/8-24 UNF internal threads in stainless steel and similar materials. Fits standard tap holders and tapping attachments accepting a 9.68 mm shank diameter.

Installation Notes

This tap should be installed in a properly aligned tap holder or floating tapping attachment to prevent side loading and tool breakage. Apply appropriate cutting fluid rated for the workpiece material, particularly when tapping stainless steel. Ensure the workpiece is securely fixtured before operation. Inspect the tap for wear or damage before each use and replace when thread quality degrades.