SKU: CBHDG-516X312

Conquest 5/16" x 3-1/2" A307 Carriage Bolt - Hot Dip Galvanized

Conquest 5/16" x 3-1/2" A307 Carriage Bolt - Hot Dip Galvanized!

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Carriage Bolts

SKU: CBHDG-516X312

Conquest 5/16" x 3-1/2" A307 Carriage Bolt - Hot Dip Galvanized

$0.28
 
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Specifications

Diameter: 5/16"
Finish: Hot Dip Galvanized
Length: 3-1/2"
Material: Carbon Steel
Head type: Round Head, Square Neck
Manufacturer name: Conquest Fasteners
Measuring system: Standard SAE
Packaging type: Single
Quantity: 1 Bolt
Thread length: Fully Threaded
Thread type: Coarse
Threads per inch: 18
Description

Conquest A307 Carriage Bolts with a hot dip galvanized finish are designed for strength, durability, and corrosion resistance in outdoor and treated lumber applications. With a smooth, rounded head and square neck to prevent spinning during installation, these bolts are ideal for applications where both performance and appearance matter. Available in a range of lengths and diameters, they meet ASTM A307 specifications for general-purpose use, These coach bolts pair with compatible hot dip galvanized hex nuts and hot dip galvanized washers.

Whether you're building a deck, fencing in a pasture, or assembling structural wood frames, these galvanized carriage bolts offer long-lasting performance in demanding environments.

Key Features:

  • ASTM A307 Compliant: Manufactured for low-carbon steel applications, ensuring reliable tensile strength.
  • Hot Dip Galvanized Finish: Provides superior corrosion resistance, perfect for outdoor and treated lumber.
  • Square Neck Design: Keeps the bolt from spinning when tightening the nut.
  • Rounded Head Profile: Offers a smooth, finished look while improving safety.
  • Wide Range of Sizes Available: Select the appropriate length and diameter for your specific job.

Applications:

  • Deck construction
  • Outdoor fencing
  • Pergolas and timber framing
  • Marine and coastal projects
  • Any structural wood-to-wood or wood-to-metal connections requiring corrosion resistance

Installation:

  1. Drill a pilot hole through the materials being joined.
  2. Insert the bolt so the square neck sits flush in the wood to prevent spinning.
  3. Use a washer and nut on the opposite side to tighten securely.
  4. Torque to spec based on material and application needs.
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× WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects and other reproductive harm. For more information visit: www.P65Warnings.ca.gov.

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Carriage Bolts

× WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects and other reproductive harm. For more information visit: www.P65Warnings.ca.gov.

Customer Reviews

Based on 28 reviews
93%
(26)
7%
(2)
0%
(0)
0%
(0)
0%
(0)
J
James E Capachin
Excellent

About 1/2 way through my order every one perfect so far. Delivery was timely and price acceptable. My idea of a good source. Thanks

T
Travis Bindner
A+++

Phenomenal shipping.

D
Dan Gwinn
Better bolts, better price

These were exactly what we needed to complete our deck awning. Appreciated the value and quick shipping to get project finished. Thanks again

T
Tom Gleason
bolts

correct order came to my home

S
Steven Bickerton
Bolt Set Rating

The bolt set that was received was exactly what my project required. The complete order process was seamless and the items meet all specifications. The shipping cost was not cheap but the total cost and the product options made the Box store look foolish.