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1/2" x 2-1/2" Carriage Bolt, 18-8 SS

1/2" x 2-1/2" Carriage Bolt, 18-8 SS

Your Price: $1.36
Part Number:12820
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  • 1/2"-13 Carriage Bolts have a 1/2" square shoulder below a 1-1/16" diameter round head. 
  • The fastener length is measured under the head including the square shoulder. 
  • Carriage Bolts up 6" long are typically fully threaded. Carriage Bolts longer than 6" usually have 6" of thread. 
  • 18-8 Stainless Steel for general construction, industrial and marine applications.

18-8 Stainless Steel Carriage Bolts


A carriage bolt, coach bolt or round head square neck bolt is distinguished from other bolts by its shallow mushroom head and that the shank cross-section of the bolt is circular for most of its length, as usual, but the portion immediately beneath the head is formed into a square section.

This makes the bolt self-locking when placed through a square hole in a metal strap, or a round hole in most wood. This allows the fastener to be installed with only a single tool, a spanner or wrench, working from one side.

The head of a carriage bolt is usually a shallow dome. The squared section is of the same size as the diameter of the bolt shank, with a plain unthreaded shank.

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