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SKU: HBG8BPO-12X412
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Conquest 1/2" x 4-1/2" Grade 8 Indented Flange Bolt - Plain

Diameters

1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4"

Lengths

1/2" 5/8" 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" 5-1/2" 6"
$321
Ships Nov 11 when you order now

Description

1/2" x 4-1/2" 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 1/2" Conquest Grade 8 Indented Flange Bolt is engineered for high‑strength performance in demanding structural and industrial applications. Manufactured from premium Grade 8 alloy steel, this bolt delivers superior tensile strength and reliability where failure isn’t an option. The built‑in indented flange spreads load evenly, eliminating the need for separate washers and reducing setup time.

High‑Strength Fastening With Built‑In Load Distribution

Designed with a precision machined coarse thread (13 TPI) and plain finish, this flange bolt offers secure clamping force and smooth engagement. The indented flange helps reduce surface damage compared to standard flanged bolts, making it ideal for assembly, repair, and OEM replacement jobs in controlled environments where corrosion resistance is not required.

Key Features

  • Grade 8 Alloy Steel: High tensile strength for critical load‑bearing applications.
  • Indented Flange Head: Acts like an integrated washer, spreading clamping force evenly.
  • Plain Finish: Cost‑effective solution for indoor or low‑exposure environments.
  • Coarse Thread (13 TPI): Provides reliable engagement and secure hold.
  • Precision Machined Threads: Ensures smooth installation and strong clamp force.

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

Specifications
Diameter: 1/2"
Length: 4-1/2"
Thread Length: 1.731"
Thread Type: Coarse
Threads Per Inch: 13
Head Type: Hex Head
Material: Alloy Steel
Finish: Plain
Type: Grade 8
Product Weight: 0.31 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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(12)
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M
Mark Henderson
Flange bolts are great

I use flange bolts for almost every application. The additional clamping power and not digging into softer metals.

D
Dusty Chavis
Fast and easy

Well, this is the first time I really has ever ordered boats online and it was such an easy process through this company that I wouldn’t go. Any anywhere else to purchase anything but right here. Thank you for such a well organized and customer oriented company.

t
todd sykes

Great prices! My go to place for bolts etc.

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