Item #:
729857011686
UPC: #:
729857011686
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SOG-TAC Auto 3.43" Tanto Folding Knife D2 Steel Black TiNi

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The SOG-TAC Auto delivers instant blade deployment with premium D2 steel construction and tactical-grade reliability. This automatic folding knife combines a partially serrated tanto point with black titanium nitride coating for enhanced corrosion resistance and reduced friction during cutting tasks.

What Makes This Different

The SOG-TAC Auto features cryo-treated D2 tool steel that maintains its edge 3x longer than standard stainless steel blades. The black TiNi coating provides superior wear resistance while the micro-textured aluminum handle ensures secure grip even in wet conditions. Unlike basic automatic knives, this model incorporates SOG's proven spring-loaded mechanism rated for over 10,000 deployment cycles.

Key Features

  • 3.43-inch D2 steel blade with cryo treatment for extended edge retention
  • Partially serrated tanto point optimized for piercing and utility cutting
  • Black titanium nitride coating resists corrosion and reduces friction
  • Micro-textured anodized aluminum handle provides non-slip grip
  • Spring-loaded automatic deployment mechanism with safety lock
  • Removable pocket clip for tip-up or tip-down carry
  • Ambidextrous thumb stud for manual opening when needed
Field testing demonstrates consistent one-handed operation across temperature ranges from -20°F to 140°F. The D2 steel composition (1.5% carbon, 12% chromium) delivers Rockwell hardness of 60-62 HRC while maintaining chip resistance. Law enforcement and military personnel rely on this blade geometry for rope cutting, package opening, and emergency applications where quick deployment matters.

Technical Specs

  • Overall length: 8.0 inches open, 4.57 inches closed
  • Blade length: 3.43 inches
  • Blade steel: Cryo-treated D2 tool steel with TiNi coating
  • Handle material: 6061-T6 anodized aluminum with micro-texture
  • Weight: 4.2 ounces
  • Blade thickness: 0.125 inches
  • Country of origin: Taiwan
  • Limited lifetime warranty against manufacturing defects
Professionals choose the SOG-TAC Auto when automatic deployment and blade retention are non-negotiable requirements. The combination of premium materials and proven engineering makes this knife a reliable tool for demanding applications where failure isn't an option.