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Five chrome carriage bolts with round heads and square necks

Zoro Select

Zoro Select MPB763 Carriage Bolt Chrome 7/16-14x3 Pk5

SKU CH-DAWA-W5Y75

Chrome-plated Grade 5 carriage bolts, 7/16-14 by 3 inches, pack of five

  • TypeBolts
  • Grade 5 steel delivers 120,000 psi tensile strength
  • Chrome plating resists corrosion on 7/16-14 UNC threads
  • Square neck locks into wood preventing bolt rotation
  • ASME B18.5 compliant dimensions ensure reliable fit
  • Pack of five supplies multiple fastening points

Chrome Carriage Bolts for Heavy-Duty Joints

Zoro Select MPB763 carriage bolts deliver Grade 5 strength with a chrome-plated finish. Each bolt measures 7/16-14 by 3 inches and features a square neck that locks into wood or metal. The pack contains five pieces for structural assemblies.

Upgrade from Standard Grade 2 Hardware

These bolts replace lower-grade fasteners when tensile loads approach 120 000 psi. The jump is worth it for trailer frames, timber connections or equipment mounts that see repeated stress cycles. They meet ASME B 18.5 dimensions for consistent fit.

Five-Bolt Pack Handles Medium-Span Connections

The 3-inch length and 0.907-inch head diameter suit joints up to the thread length. Square neck dimensions of 0.431 by 0.219 inches resist rotation in drilled holes. Drill size 29/64 inch clears the shank. Not for applications requiring finer thread pitch or longer grip lengths.

Highlights

  • Grade 5 steel delivers 120,000 psi tensile strength
  • Chrome plating resists corrosion on 7/16-14 UNC threads
  • Square neck locks into wood preventing bolt rotation
  • ASME B18.5 compliant dimensions ensure reliable fit
  • Pack of five supplies multiple fastening points

Specifications

BrandZORO SELECT
TypeBolts

Questions about this item

What drill size is needed for the 7/16-14 thread?

Use a 29/64 in drill bit to prepare the hole for the 7/16-14 UNC thread.

How do I keep the square neck from spinning while tightening?

Drive the square neck into a matching square hole or wood so the 0.431 in width locks against rotation.

When should these Grade 5 bolts be replaced?

Replace if the chrome plating is damaged, threads are stripped, or the bolt has been stretched beyond its 120,000 psi tensile limit.

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