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SKU: HBFG8BPO-58X3

5/8" x 3" Conquest Grade 8 Indented Fine Thread Flange Bolt - Plain

5/8" x 3" Conquest Grade 8 Indented Fine Thread Flange Bolt - Plain!

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SKU: HBFG8BPO-58X3

5/8" x 3" Conquest Grade 8 Indented Fine Thread Flange Bolt - Plain

$4.09
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Specifications

Diameter: 5/8"
Length: 3"
Finish: Plain
Head Type: Hex Head
Manufacturer name: Conquest Fasteners
Material: Alloy Steel
Product weight: 0.35 lbs.
Quantity: 1
Thread Length: 2.273"
Thread type: Fine
Threads per inch: 18
Type: Grade 8
Additional Info: • SAE J429
• X9- ASTM Equivalent: A354 Grade BD
Description

5/8" x 3" Conquest Grade 8 Indented Fine Thread Flange Bolt With Plain 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.

5/8" Grade 8 Indented Flange Bolts - Fine Thread, High Strength, No Washer Needed

Conquest Grade 8 Indented Flange Bolts in 5/8" diameter are engineered for maximum strength and superior vibration resistance. With a fine thread profile (18 TPI), indented hex head, and an integrated flange, these bolts offer unmatched holding power in high-load applications, without the need for a separate washer.

h2>5/8" Grade 8 Indented Flange Bolts - Fine Thread, High Strength, No Washer Needed

Manufactured from high-strength, heat-treated alloy steel and built to SAE Grade 8 standards, these flange bolts deliver outstanding tensile strength and shear resistance. The fine thread increases surface contact, reduces the chance of loosening under vibration, and is ideal for torque-critical assemblies.

Key Features

  • 5/8" Diameter Grade 8 Alloy Steel: Built for strength, longevity, and high-load performance.
  • Indented Hex Head: Provides positive tool engagement for easy installation and removal.
  • Integrated Flange: Eliminates need for separate washers while evenly distributing clamping force.
  • 18 TPI Fine Thread: Improves torque retention and vibration resistance in demanding assemblies.
  • Plain Finish: Cost-effective and ideal for dry or lubricated environments where corrosion isn't a concern.
  • Torque-Ready: Designed for automotive, heavy machinery, suspension systems, and industrial rigs.
  • Washer-Free Installation: Flange seats flush to spread load and simplify hardware selection.

Common Applications

  • Heavy machinery assembly and maintenance
  • Automotive engine, frame, and suspension components
  • Industrial manufacturing equipment and fixtures
  • Agricultural and off-highway vehicle repairs
  • Structural assembly where high tensile strength is required

Installation Tips

  • Always torque to manufacturer specifications using a calibrated wrench
  • Pair with fine-thread nuts for optimal strength and engagement
  • Skip the washer, the integrated flange head handles pressure distribution

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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L
Lisa

I thought they were quality made and worked as stated