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SKU: HBAHDG-38X6
(17)

Conquest 3/8" x 6" A307 Grade A Hex Bolt - Hot Dip Galvanized

Lengths

3/4" 1" 1-1/4" 1-1/2" 1-3/4" 2" 2-1/4" 2-1/2" 2-3/4" 3" 3-1/4" 3-1/2" 3-3/4" 4" 4-1/2" 5" 5-1/2" 6" 6-1/2" 7" 7-1/2" 8" 8-1/2" 9" 10" 11" 12"
$122
Ships Nov 11 when you order now

Description

3/8" x 6" Conquest A307 Grade A Hex Bolt - Hot Dip Galvanized

When pairing a nut with a hex bolt, the material and finish must match. If these do not match, the nut will not fit the bolt.

These 3/8" diameter Conquest A307 Grade A Hex Bolts are built from carbon steel and hot dip galvanized to withstand harsh outdoor conditions. With coarse threads and a hex head design, they’re ideal for wood-to-wood or wood-to-steel fastening in residential, commercial, and agricultural construction.

General-purpose structural fastening for High-Moisture and Outdoor Environments

Engineered to ASTM A307 Grade A specifications, these general-purpose bolts provide dependable tensile strength for framing, equipment anchoring, and structural assembly. The corrosion-resistant coating ensures long-term performance in decks, fencing, post-frame buildings, and more.

Key Features

  • 3/8" Diameter Carbon Steel: Delivers reliable strength for light to moderate structural applications.
  • Hot Dip Galvanized Finish: Protects against rust and moisture in outdoor environments.
  • ASTM A307 Grade A Compliant: Meets construction standards for non-critical structural fastening.
  • Coarse Thread Profile: Ensures strong grip in wood, concrete (with anchors), and steel connections.
  • Hex Head Design: Compatible with standard wrenches or sockets for fast, efficient installation.
  • Versatile Applications: Ideal for decks, pergolas, equipment mounting, and agricultural structures.
  • Available in Multiple Sizes: Wide selection of diameters and lengths for job-specific needs.

Common Applications

  • Outdoor decking and fencing installations
  • Wood-to-metal fastening for agricultural or utility structures
  • General construction in high-moisture environments
  • Repair and maintenance of outdoor wooden frameworks
  • Clamping multi-layer assemblies requiring full thread engagement

Installation Tips

  • Always pair with hot dip galvanized nuts and washers to maintain corrosion resistance and thread compatibility
  • Tighten bolts evenly across their full length to prevent misalignment or overtightening in softer materials
  • Inspect for coating buildup and clean threads if needed before installation for a smooth fit

California Residents: WARNING

Specifications
Diameter: 3/8"
Length: 6"
Thread Length: 1"
Thread Type: Coarse
Threads Per Inch: 16
Head Type: Hex Head
Material: Carbon Steel
Finish: Hot Dip Galvanized
Type: A307 Grade A
Product Weight: 0.19 lbs.
Measuring System: Standard SAE
Manufacturer Name: Conquest Fasteners
Quantity: 1 Bolt

Reviews
(17)

Customer Reviews

Based on 17 reviews
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(17)
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J
Jack McDaniel
Great Service

Great pricing and materials I ordered arrived super fast!! Highly recommend USCC.

t
thomas fugate
Overall experience

The bolts are great. This review is about my overall experience working with Fasteners Plus. I needed to make a change in my order and this company went way above and beyond to accommodate me. It was going to be more expensive to return some hardware that I ordered by mistake and they simply sent the correct hardware and told me to keep the bolts I ordered in error. Great to work with!

D
Doug
Great Product Selection, Even Better Service and Ship Speed

Love the selection of bolts, nuts, and all other related hardware at this place! You can find most everything here. The low Fastener part(s) prices usually offset the shipping costs with any volume of parts at all.... and that selection, very good. Shipping was incredibly fast and the call I had with their support yielded "above and beyond" support that I needed and really appreciated.

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Our multiple distribution centers allow us to reach nearly 80% of the U.S. within 1-2 business days for all in-stock items. With thousands of items in stock & ready to ship, orders placed before 4:00pm CST ship out the same day.

Shipping & Returns

Employee-owned

Industry-best Customer Service

As employee-owners, we take customer service very seriously. Our team members are dedicated, professionally-trained, and have decades of combined experience serving the industry. Always speak with a real person and never wait more than 1 business day.

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Manufactured in Iowa Headquarters

Custom Product Solutions

Our Iowa-based 23,000 square foot manufacturing facility was carefully crafted for the high quality, custom production of tie-down straps and chains, lifting slings, cargo nets, and more. Your vision brought to life.

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