[600 BULK] Frame Bolts Flange Black Phospohate 5/16-18 X 2 1/2

Mutual ScrewSKU: 3140BFKC

Price:
Sale price$551.68 Regular price$581.00per 600( $0.92 each)
Pieces 600
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 2-1/2
Material Steel
Grade Grade 8
Finish Black Phosphate
Head style Indented Hex
Threads per inch 18
Weight 40.0 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Frame Bolts Flange Black Phospohate 5/16-18 X 2 1/2 are robust flange bolts designed for secure, flush mounting in frame assemblies. With a built-in flange that distributes load and speeds installation, these fasteners deliver reliable performance in metal-to-metal connections.

Key Benefits

  • Flange head provides a wide bearing surface, reducing the need for a separate washer and ensuring a clean, secure fit.
  • Black Phospohate finish offers corrosion resistance and a subdued appearance suitable for metalwork.
  • Thread size 5/16-18 delivers strong, standardizable fastening for common frame hardware.
  • Length 2 1/2 inches fits typical frame thicknesses and mounting scenarios.
  • Materials are chosen for durability and long-lasting performance in demanding environments.

Specifications

  • Size: 5/16-18
  • Length: 2 1/2 in
  • Finish: Black Phospohate
  • Head: Flange
  • Material: Steel
  • Type: Frame bolts

Applications

Ideal for securing frame components, equipment mounts, and other metal assemblies where a flange bolt with a clean, low-gloss finish is required. These fasteners are suitable for a wide range of industrial, automotive, and construction projects.

Can We Help?

If you’re not sure that this product is right for you, give us a call!
800-222-0324

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