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U.S. Flange Bolts

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3/8"-16 x 2" Grade 5 Hex Head Flange Bolts
$45.74
5/16"-18 x 2" Grade 5 Hex Head Flange Bolts
$31.31
5/16"-18 x 3/4" Grade 5 Hex Head Flange Bolt
$28.55
3/8"-16 x 1-1/4" Grade 5 Hex Head Flange Bolt
$43.67
3/8"-16 x 1-1/2" Grade 5 Hex Head Flange Bolt
$44.61
5/16"-18 x 1" Grade 5 Hex Head Flange Bolts
$31.86
5/16"-18 X 1-1/4" Grade 5 Hex Head Flange Bolts
$34.55
5/16"-18 X 1-1/2" Grade 5 Hex Head Flange Bolt
$38.32
1/4"-20 X 3/4" Grade 5 Hex Head Flange Bolt
$15.63
1/4"-20 X 1" Grade 5 Hex Head Flange Bolt
$17.88
1/4"-20 X 1-1/4" Grade 5 Hex Head Flange Bolt
$20.74
1/4"-20 X 1-1/2" Grade 5 Hex Head Flange Bolt
$18.78
3/8"-16 x 1" Grade 8 Hex Head Flange Bolt
$49.34
1/2"-13 x 2" Grade 8 Hex Head Flange Bolt
$59.55
5/8"-11 x 1-1/2" Grade 8 Hex Head Flange Bolt
$82.08
5/8"-11 x 2" Grade 8 Hex Head Flange Bolt
$86.62
5/8"-11 x 2-1/2" Grade 8 Hex Head Flange Bolt
$101.37
5/8"-11 x 3" Grade 8 Hex Head Flange Bolt
$111.63
5/8"-11 x 5" Grade 8 Hex Head Flange Bolt
$79.36
1/2"-20 x 1-3/4" Grade 8 Hex Head Flange Bolt
$117.02
U.S. Flange Bolts

U.S. flange bolts are designed for strong, secure fastening in automotive, industrial, and general mechanical applications. With a built-in flange under the head, these bolts help distribute clamping force more evenly and can reduce the need for a separate washer. If you need durable flange bolts in a variety of sizes and grades, ROGO Fastener has a great selection.

What Flange Bolts Do

Flange bolts are commonly used when a dependable hold and even load distribution are important. The flange beneath the hex head provides a wider bearing surface, which helps protect the material being fastened and improves grip during installation. U.S. flange bolts are ideal for applications that require strength, consistency, and ease of assembly. These bolts offer benefits such as:

  • Even distribution of clamping force
  • Reduced need for a separate washer
  • Strong holding power in high-stress applications
  • Reliable performance in automotive and industrial settings

At ROGO Fastener, we carry U.S. flange bolts in a wide range of diameters, thread sizes, and lengths to suit your project needs. Our selection includes Grade 5 and Grade 8 hex head flange bolts, making it easy to choose the right fastener for light-duty or heavy-duty applications.

When You Need Flange Bolts

Flange bolts are a smart choice when you need a secure fastener that offers both strength and stability. They are often used in assemblies where vibration resistance, load support, and efficient installation matter most. You may need U.S. flange bolts when:

  • Securing automotive components and assemblies
  • Working on machinery, equipment, or structural projects
  • Replacing standard bolts where added bearing surface is needed
  • Choosing between Grade 5 and Grade 8 bolts for different strength requirements

Browse Our Selection of U.S. Flange Bolts Today

ROGO Fastener offers a wide selection of U.S. flange bolts in popular sizes such as 1/4", 5/16", 3/8", 1/2", and 5/8", with multiple lengths available. If you have questions or need assistance, call us at (845) 692-7646 or submit our online contact form.