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Five chrome-plated Grade 5 carriage bolts with round heads and square necks

Zoro Select

Zoro Select MPB760 Carriage Bolt 7/16-14 x 1 3/4 in Pack of 5

SKU CH-7GM6-4XHG5

Grade 5 steel carriage bolt with 7/16-14 UNC threads and 1 3/4 in length, chrome plated, pack of 5

  • Product typeBolts
  • Grade 5 steel delivers 120,000 psi tensile strength
  • Chrome plated finish resists corrosion in outdoor use
  • Square neck prevents rotation during tightening
  • ASME B 18.5 compliant for reliable dimensions
  • Pack of 5 covers multiple fastening jobs

Zoro Select MPB760 Carriage Bolt Pack

This pack contains five new carriage bolts made from medium carbon steel with a chrome-plated finish. Each fastener uses a Grade 5 rating and a right-hand UNC thread profile. The square neck design prevents rotation during tightening. They suit general fastening tasks that require this specific diameter and length.

Who These Bolts Fit

Builders needing a 7/16-14 thread size and a 1 3/4 inch length will find the correct dimensions here. The Grade 5 tensile strength of 120,000 psi meets standard structural requirements. Projects requiring a different diameter, thread pitch, length, or a higher grade such as Grade 8 should look at other options. Applications needing stainless steel or a different head style are not served by this pack.

Critical Specification: 7/16-14 UNC Thread

The defining specification is the 7/16-14 UNC coarse thread, which determines nut and tap compatibility. A 29/64 inch drill size matches the shank for proper clearance. The head measures 0.907 inch in diameter with a 0.219 inch height. The square neck width is 0.431 inch and height is 0.219 inch. Verify these figures against your hardware before ordering.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 63% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameZORO SELECT
Product typeBolts

Questions about this item

What size drill bit do I need to pre-drill for the 7/16-14 carriage bolt?

Use a 29/64 in drill bit to create the correct clearance hole for the 7/16 in diameter shank before installation.

Will these Grade 5 bolts work with the Grade 2 hex nuts I already have?

Yes, the manufacturer specifies these bolts are for use with Grade 2 nuts, so your existing hardware is compatible.

How can I confirm the bolt head is seated properly after tightening?

The round head should sit flush with a height of 0.219 in and the square neck of 0.219 in height by 0.431 in width should be fully embedded to prevent rotation.

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