3/8" x 3-1/2" Conquest A307 Grade A Hex Bolt - Hot Dip Galvanized
3/8" x 3-1/2" Conquest A307 Grade A Hex Bolt - Hot Dip Galvanized!
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A307 Hex Bolts
Specifications
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.
Conquest A307 Grade A Hex Bolts are built to deliver dependable performance in general-purpose structural fastening. Designed with durability in mind, these bolts are hot dip galvanized for superior corrosion resistance—ideal for outdoor and high-moisture environments.
Whether you're securing wood-to-wood or wood-to-steel connections, these hex bolts are a staple in residential, commercial, and industrial construction. The coarse thread profile and hex head make installation efficient with standard tools, and the variety of available diameters and lengths ensures the right fit for your specific needs.
Perfect for contractors, builders, and dedicated DIYers, these bolts meet ASTM A307 Grade A specifications, ensuring reliable tensile strength and performance where it matters most.
Features:
- A307 Grade A Carbon Steel: Delivers consistent tensile strength for general structural use.
- Hot Dip Galvanized Finish: Provides enhanced corrosion protection for long-term outdoor performance.
- Hex Head Design: Easy to install using common wrenches or sockets.
- Available in Multiple Sizes: Wide range of diameters (1/4" – 1") and lengths (1-1/4" – 13") to suit various applications.
- Meets ASTM Standards: Conforms to A307 Grade A for confidence in quality and compliance.
Applications:
- Deck and porch framing
- Outdoor pergolas and pavilions
- Wood-to-concrete anchoring with appropriate washers and nuts
- Light-duty structural steel assemblies
- Agricultural buildings and fencing
- General-purpose construction, including residential and commercial framing
California Residents: WARNING
Add the Essentials
Complete your order with these essentials, compatible with:
3/8" x 3-1/2" Conquest A307 Grade A Hex Bolt - Hot Dip Galvanized
Continue Browsing
A307 Hex Bolts








Add the Essentials
Complete your order with these essentials, compatible with:
3/8" x 3-1/2" Conquest A307 Grade A Hex Bolt - Hot Dip Galvanized
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Complete Hex Bolt Connections
Pair grade A hex bolts with compatible nuts and washers to create secure, properly assembled connections. A complete fastening setup helps distribute clamping force and provides dependable performance across a range of projects.
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Grade A Hex Bolts
Grade A hex bolts are a versatile choice for general construction, fabrication, and industrial applications. Available in multiple sizes and finishes, they provide a practical solution for everyday fastening needs.
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Steel-to-Steel Connections
Commonly used to join steel plates, brackets, frames, and other metal components, Grade A hex bolts feature a durable design that provides secure fastening for construction and industrial assemblies.
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.
Correct product - arrived in a timely matter worked as it should.
This was my second order from Fasteners Plus and they quickly and accurately fulfilled my order. My new go-to supplier for my hardware.
very good company to order bolts, nuts and washers from. even with shipping more than all the items l bought, it was many dollars lower than going to Lowes or Home Depot. will buy from again if l need fasteners. very good and quick service.
Fasteners Plus ensures an excellent Customer experience. I ordered my fasteners through their website, and within a few days, they arrived at my front door. This is my second order with Fasteners Plus, but they are becoming my go-to place for a good value and excellent service.
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We are on a mission to expand our national reach—offering more product selection and faster delivery times. So far we’ve made remarkable progress in our expansion efforts, effectively doubling our capacity by adding a new 47,000 sq. ft. warehouse in Simpsonville, South Carolina, in addition to our existing 60,000 sq. ft. facility in Urbana, Iowa.
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We pride ourselves on delivering a user-friendly, high quality experience online and over the phone. Our knowledgeable team of experts is readily available via phone to assist with product questions and custom pricing inquiries. We’re available Monday thru Friday from 7:00 AM – 5:00 PM CST. We look forward to supporting you on your next job.
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We partner with trusted manufacturers in the fasteners industry to bring our customers a selection of over 10,000 different products. Fasteners Plus is one of only four Certified Platinum E-Commerce Vendors of Simpson Strong-Tie products, one of the largest suppliers of high-quality structural building products in the world.
