HSS Bottom Tap UNC 5/8″ x 11 – Somta Series 541

The SOMTA 5411593 – 5/8″ x 11 UNC HSS Bottom Tap is a high-precision tool designed for creating full-depth threads in blind holes. Manufactured from high-speed steel (HSS), this bottoming tap features a short chamfer (1–2 threads) that allows threading close to the base of the hole. It conforms to Unified National Coarse (UNC) standards, making it ideal for heavy-duty tapping in steel, cast iron, aluminum, and general-purpose metals.

Key Features Benefits

• Bottoming Chamfer – 1–2 lead threads for threading to the bottom of blind holes.
• UNC Thread Form – Standard 5/8″ diameter with 11 threads per inch for coarse-thread applications.
• Straight Flute Geometry – Provides efficient chip evacuation and steady cutting action.
• High-Speed Steel (HSS) – Offers excellent wear resistance and heat tolerance.
• Bright Finish – Reduces friction and enhances surface finish of threads.
• Manual or Machine Use – Compatible with hand tap wrenches or powered tapping systems.

Technical Specifications

• Part No: 5411593
• Thread Size: 5/8″ x 11 TPI
• Thread Standard: UNC – Unified National Coarse
• Tap Type: Bottoming (short chamfer for blind holes)
• Flute Style: Straight flute
• Cutting Direction: Right-hand
• Material Finish: High-Speed Steel (HSS), Bright
• Standard: ANSI / Unified Inch

Why Choose the SOMTA 5411593 UNC Bottom Tap?

• Optimized for Blind Holes – Ensures full thread engagement close to the base of the hole.
• Durable HSS Construction – Maintains performance in tough materials and repeated use.
• Accurate Coarse Threading – Complies with UNC standards for secure, load-bearing threads.
• Versatile Industrial Use – Ideal for mechanical, structural, and repair applications.

The SOMTA 5411593 bottom tap delivers clean, consistent 5/8″ UNC threads in demanding blind-hole applications. Built with quality HSS and a short chamfer, it’s a reliable choice for professionals in machining, assembly, and maintenance environments.