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Cup Hd Bolt 5\16UNC x 1.1\2 304 x 1

Stock Code:
3160815
Price:
$1.77

Cup Head Bolt 5⁄16" UNC × 1½" – 304 Stainless Steel

This 5⁄16" UNC × 1½" Cup Head Bolt is precision-made from premium 304 stainless steel, providing reliable strength, corrosion resistance, and a smooth polished finish. The domed cup head with a square neck design prevents rotation during tightening and offers a secure, flush fit — ideal for timber construction, marine fittings, fencing, decking, and general engineering applications.

The Unified National Coarse (UNC) thread ensures strong engagement and easy installation, while the 304-grade stainless steel guarantees long-term resistance to rust, pitting, and staining. Perfect for indoor, outdoor, and coastal environments, this bolt delivers dependable performance and a clean, professional appearance.

Key Features

  • Size: 5⁄16" UNC × 1½" (7.9mm diameter × 38mm length)

  • Thread type: Unified National Coarse (UNC)

  • Material: 304 stainless steel

  • Domed cup head with square neck for anti-rotation hold

  • Excellent corrosion and weather resistance

  • Smooth polished finish for neat appearance

  • Ideal for timber joints, fencing, marine fittings, and general fabrication

A high-quality 304 stainless steel cup head bolt offering strength, corrosion resistance, and a professional finish — perfect for marine, construction, and outdoor fastening applications.

Details

  • Diameter:
    5\16UNC
  • Length:
    1.1\2
  • Thread Pitch:
    18 TPI
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