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Cup Head Bolts UNC Stainless Steel

Cup Head Bolts UNC Stainless Steel

Cup Head Square Neck Bolts – UNC 316 Stainless Steel for Heavy-Duty Timber Fastening

Our UNC cup head square neck bolts, also known as coach bolts, are crafted from 316 stainless steel for superior corrosion resistance and strength in demanding environments. Designed with a Unified National Coarse (UNC) thread, they’re ideal for applications requiring a secure hold and long-lasting performance.

The domed head and square neck design prevents rotation during installation, making them perfect for fastening timber to timber or timber to metal in outdoor, marine, and structural settings.

Key Features of 316 Stainless Steel UNC Cup Head Square Neck Bolts:

  • Made from marine-grade 316 stainless steel for maximum corrosion resistance

  • UNC (Unified National Coarse) thread for a strong, reliable fit

  • Square neck prevents spinning while tightening

  • Clean, tamper-resistant cup head design

  • Ideal for decks, fences, outdoor furniture, landscaping, and timber framing

  • Suitable for coastal, marine, and high-moisture environments

  • Available in popular UNC sizes (e.g., 1/4", 5/16", 3/8", 1/2")

  • Supplied in bulk or trade quantities, with fast shipping across Australia

Use 316 stainless steel UNC cup head square neck bolts for secure, corrosion-resistant fastening in timber construction and structural projects.