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SKU: HBG8ZY-516X134
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Conquest 5/16" x 1-3/4" Grade 8 Non-Serrated Flange Bolt - Zinc Yellow Cr+6

Regular price $069
Ships today when you order in the next 13 hours and 44 minutes

Description

5/16" x 1-3/4" Conquest Grade 8 Non-Serrated Flange Bolt With Yellow Zinc Finish

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.

The 5/16" Conquest Grade 8 Non-Serrated Flange Bolt is built for high-performance fastening in applications where strength, reliability, and surface protection matter. Crafted from high-strength Grade 8 steel and finished with a corrosion-resistant zinc yellow coating, this flange bolt is ready to perform in automotive, machinery, and structural settings.

Secure Fit. Surface-Safe. Built to Last.

The integrated flange eliminates the need for a separate washer by evenly distributing clamping force. The non-serrated head prevents marring on sensitive or finished surfaces, ideal for slotted or precision components.

Key Features

  • Grade 8 Steel: Provides exceptional tensile strength for demanding applications.
  • Zinc Yellow Coating: Offers corrosion resistance with a clean, professional appearance.
  • Flange Head Design: Spreads load evenly, reducing damage to joined surfaces.
  • Non-Serrated Underside: Suitable for use where surfaces must remain unmarred.
  • Thread Spec: Coarse thread, 18 threads per inch (TPI).

Common Applications

  • Structural steel framing and fabrication in construction or industrial settings
  • Heavy equipment assembly including loaders, lifts, and mechanical arms
  • Automotive chassis, suspension systems, and drivetrain components
  • Agricultural and industrial machinery installations
  • High-load bolting where vibration resistance and surface protection are critical

Installation Tips

  • Torque bolts to SAE J429 specifications to ensure proper preload and bolt performance
  • Use with Grade 8 nuts and hardened washers to maintain full tensile strength and load distribution
  • Avoid overtightening to protect mating surfaces, especially in slotted holes or precision applications
  • Inspect flange seating for flush contact to prevent loosening under vibration
  • Verify the bolt length provides full thread engagement without bottoming out

California Residents: WARNING

Specifications

Diameter: 5/16"
Length: 1-3/4"
Thread Length: 1.292"
Thread Type: Coarse
Threads Per Inch: 18
Head Type: Hex Head
Material: Alloy Steel
Finish: Zinc Yellow Cr+6
Type: Grade 8
Product Weight: 0.05 lbs.
Manufacturer Name: Conquest Fasteners
Quantity: 1 Bolt
Additional Info: • SAE J429
• X9- ASTM Equivalent: A354 Grade BD

Reviews
(12)

Customer Reviews

Based on 12 reviews
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(11)
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G
Giulio Forstall
Perfect bolts for an overkill project

I have a show engine in my 68 Camaro, so I am particular about the bolts I choose to use. Many of the factory spec bolts are boring, and replacements are hard to replicate. These guys made bolts that were perfect for my application, and I will be reaching out to them in the future as my work progresses.

J
John Tibbetts
Hardware

These bolts came real quick and they are just what I needed for my project

C
Curtis

Exactly what I ordered and delivered within a few days of placing the order!

Payment & Security

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1-2 day shipping

Fast, Same-Day Shipping

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.

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.

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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