Somta Series 541 – HSS Bottom Tap UNC 1″ x 8 TPI

SKU: 5412543

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Sale price$251.35

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Description

HSS Bottom Tap UNC 1″ x 8 – Somta Series 541

The SOMTA 5412543 – 1″ x 8 UNC HSS Bottom Tap is a heavy-duty threading tool designed for cutting full-depth threads in blind holes. Manufactured from high-speed steel (HSS), this bottoming tap features a short chamfer that allows threading close to the hole base—making it ideal for maintenance, production, and repair tasks requiring high-strength UNC threads. It conforms to Unified National Coarse (UNC) thread standards and delivers consistent performance in steel, cast iron, aluminum, and other metals.

Key Features Benefits

  • Bottoming Chamfer – Short 1–2 thread lead for threading to the bottom of blind holes.
  • Unified National Coarse (UNC) – Standard 1″ diameter with 8 TPI for compatibility with UNC fasteners.
  • Straight Flute Design – Supports smooth cutting and effective chip evacuation in hand or machine use.
  • High-Speed Steel (HSS) – Provides excellent durability, cutting edge retention, and heat resistance.
  • Bright Finish – Reduces friction and helps produce clean, accurate threads.
  • Versatile Use – Suitable for manual tapping with wrenches or powered operations with tapping heads.

Technical Specifications

  • Part No: 5412543
  • Thread Size: 1″ x 8 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 5412543 UNC Bottom Tap?

  • Perfect for Blind Hole Tapping – Bottoming lead enables full thread formation to the hole base.
  • Durable Construction – HSS material extends tool life even under high-load conditions.
  • Reliable Thread Form – Meets UNC thread standards for universal fit and compatibility.
  • Ideal for Industrial Use – Trusted by professionals for tooling, repair, and fabrication tasks.

The SOMTA 5412543 tap provides dependable threading for 1″ UNC applications in blind holes. Built from high-speed steel and engineered to deliver precision and repeatability, it’s a must-have tool for heavy-duty threading jobs.

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