3/8"-16 x 1-1/2" Conquest Grade 8 Non-Serrated Flange Bolt - Zinc Yellow
3/8"-16 x 1-1/2" Conquest Grade 8 Non-Serrated Flange Bolt - Zinc Yellow!
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Grade 8 Flange Bolts
3/8"-16 x 1-1/2" Conquest Grade 8 Non-Serrated Flange Bolt - Zinc Yellow
Specifications
• X9- ASTM Equivalent: A354 Grade BD
Conquest Grade 8 Non-Serrated Flange Bolt – Zinc Yellow
Built for strength. Designed for efficiency. The Conquest Grade 8 Non-Serrated Flange Bolt in a zinc yellow finish is engineered to hold tight under pressure. Whether you're securing structural assemblies, heavy-duty machinery, or automotive frames, this bolt is built to meet the moment.
Made from high-strength Grade 8 steel, it delivers superior tensile strength for high-load applications. The zinc yellow coating provides excellent corrosion resistance and a clean, professional finish. The built-in flange acts like a washer, spreading out the load and helping reduce the chance of damaging surfaces.
With no serrations under the head, it’s ideal for use where surface damage must be avoided or when used in slotted holes. It's a reliable choice when paired with hardened washers or precision fittings.
Features:
- Grade 8 Strength – Manufactured for critical applications requiring high tensile performance and reliability.
- Zinc Yellow Finish – Provides corrosion resistance while delivering a sharp, professional look.
- Flange Head Design – Built-in flange distributes clamping force evenly, eliminating the need for a separate washer.
- Non-Serrated Head – Safe for use on precision surfaces or components that require minimal marring.
- Available in Multiple Sizes – Choose the diameter and length that best fits your project requirements.
Applications:
- Structural steel fabrication
- Heavy equipment assembly
- Automotive chassis and suspension
- Agricultural and industrial machinery
- Construction and repair projects where vibration resistance matters
Installation Tips:
- Torque according to SAE J429 standards for Grade 8 fasteners.
- Pair with Grade 8 nuts and hardened washers for maximum performance.
- Do not overtighten to avoid stripping threads or damaging the mating surface.
These bolts are stocked in a wide range of diameters and lengths, ready to ship same day. Explore the available options to find the right fit for your build.
California Residents: WARNING
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Grade 8 Flange Bolts


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Conquest Hex Bolts - Ready for Anything
From framing and machinery to wood-to-steel connections, Conquest Hex Bolts are the go-to fastener when strength and versatility matter. Made from durable steel and engineered for reliable performance, these bolts handle a wide range of general-purpose applications with ease. Whether you're building it once or fixing it right, you’ll get the grip and durability to keep everything locked down.
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Heavy-Duty Strength You Can See
When strength matters most, Conquest Hex Bolts deliver the muscle to match. Built for demanding applications across construction, industrial, and structural projects, these bolts are engineered for a solid hold in the toughest conditions. From steel frameworks to heavy timber connections, they offer the reliability professionals count on, job after job.
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Conquest Hex Bolts: Trusted Across Trades
From factory floors to framing crews, Conquest Hex Bolts are the fastening solution professionals reach for. Whether it’s high-strength Grade 8 for the auto industry, structural connections on a jobsite, or general-purpose fastening in the shop, these bolts are engineered to perform. Available in a wide range of sizes, materials, and finishes, they’re built to meet the demands of any trade - reliably, securely, and every time.
Good quality products,as described ,fast shipping,good pricing,web site easy to navigate and descriptive.Recommend this seller. I will shop with them in the future.
Grade 8 flange bolts are hard to find, these are quality fasteners at a fair price.
works perfect


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