3/8″ x 4″ 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 3/8″ Conquest Grade 8 Indented Flange Bolt is a high-performance fastener designed for serious structural and mechanical applications. Precision-engineered from tough Grade 8 alloy steel, it offers exceptional tensile strength and durability where reliability is non-negotiable.

Flange Bolts for Structural Connections

This bolt features an integrated indented flange head that acts as a built-in washer, distributing clamping force more evenly and reducing the need for additional hardware. The plain finish offers a cost-effective option for indoor or low-exposure environments, where corrosion resistance isnt critical.

Key Features

• Grade 8 Alloy Steel: Provides superior tensile and yield strength for high-load demands.
• Indented Flange Head: Expands the load area, reducing surface damage and eliminating washer needs.
• Plain Finish: Ideal for interior use or protected installations where coating isnt necessary.
• Coarse Thread (16 TPI): Enables quick, reliable fastening with excellent grip.
• Precision Machined Threads: Ensures smooth thread engagement and consistent holding power.

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