SKU: HBG8BPO-516X112

5/16" x 1-1/2" Conquest Grade 8 Indented Flange Bolt - Plain

5/16" x 1-1/2" Conquest Grade 8 Indented Flange Bolt - Plain!

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SKU: HBG8BPO-516X112

5/16" x 1-1/2" Conquest Grade 8 Indented Flange Bolt - Plain

$0.44
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Ships Feb 2 when you order now

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" 1/2" 5/8" 5-1/2" 6"

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Specifications

Diameter: 5/16"
Length: 1-1/2"
Finish: Plain
Head Type: Hex Head
Manufacturer name: Conquest Fasteners
Material: Alloy Steel
Product weight: 0.05 lbs.
Quantity: 1
Thread Length: 1.292"
Thread type: Coarse
Threads per inch: 18
Type: Grade 8
Additional Info: • SAE J429
• X9- ASTM Equivalent: A354 Grade BD
Description

5/16" x 1-1/2" Conquest Grade 8 Indented Flange Bolt

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 Indented Flange Bolt delivers strength and reliability where high tensile performance is required. Designed for precision, this bolt features a built-in indented flange head that distributes load and eliminates the need for separate washers, streamlining your assembly process.

Flange Bolts for Agricultural Equipement and Steel Connections

Made from premium alloy steel and built to Grade 8 specifications, it provides excellent durability in demanding environments. The plain finish keeps it cost-effective for indoor or low-corrosion areas, making it ideal for manufacturing, machinery repair, and heavy-duty builds.

Key Features

  • Grade 8 Alloy Steel: Engineered for superior strength and fatigue resistance under heavy loads.
  • Indented Flange Head: Spreads pressure evenly and helps reduce surface wear or distortion.
  • Plain Finish: Uncoated for cost-efficiency in protected or indoor applications.
  • Coarse Thread (18 TPI): For fast installation and strong thread grip in tapped holes.
  • Precision Machined: Threads ensure consistent performance in high-load assemblies.

Common Applications

  • Structural steel bolting in commercial and industrial construction
  • Assembly and maintenance of agricultural and heavy-duty machinery
  • Automotive frame, suspension, and chassis installations
  • Industrial machinery builds and repairs requiring high-strength fastening
  • OEM hardware replacement in equipment where tensile reliability is critical

Installation Tips

  • Always use with matching Grade 8 nuts to maintain load capacity and thread compatibility
  • Torque to spec per ASTM A354 or SAE J429 guidelines to prevent thread damage or bolt failure
  • Inspect threads before installation; clean and align properly to ensure smooth engagement
  • Do not overtighten, built-in flange provides proper load distribution without additional washers
  • Use in dry, protected environments to maximize bolt lifespan with plain finish

California Residents: WARNING

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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.

Customer Reviews

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t
todd sykes

Great prices! My go to place for bolts etc.

M
Marcos Gomez
Excellent service and great materials.

Definitely buying again from fastenersplus.com

L
Lewis Zampitella
Header bolts.

I couldn't find these bolts anywhere else and Fasteners Plus was the only one that had them. I checked all the go to places like Home Depot, Lowe's, local hardware stores but nobody had this size so thank you fasteners plus.