Hex Head Cap Screws Grade 5 Steel Plain (USA Made) 5/16-18 x 2 1/4
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Hex Head Cap Screws Grade 5 Steel Plain (USA Made) 5/16-18 x 2 1/4

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[100 PKG] Hex Head Cap Screws Grade 5 Steel Plain (USA Made) 5/16-18 x 2 1/4

Mutual ScrewSKU: 3136CH5PDBB
Price:
$52.79 $58.65per 100( $0.53 each)
Pieces 100
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 2-1/4
Material Steel
Grade Grade 5
Finish Plain
Head style Hex
Threads per inch 18
Thread style Partially Threaded
Weight 5.52 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

Engineered for dependable performance in demanding assemblies, these Hex Head Cap Screws deliver strong clamping force with reliable durability. Crafted from Grade 5 steel and finished plain (uncoated), they are designed for rugged applications and long service life. Proudly made in the USA, these fasteners meet the needs of professional repairs and heavy-duty builds.

  • Material: Grade 5 steel
  • Finish: Plain (uncoated)
  • Head type: Hex
  • Size: 5/16-18 x 2 1/4 in
  • Thread: 5/16-18 UNC (coarse)
  • Origin: USA made

Ideal for a wide range of applications—from machinery assembly and automotive repairs to equipment mounting and general hardware projects—these hex head cap screws provide strong fastener performance with straightforward, tool-friendly installation. Pair with the appropriate nut and washer to ensure secure, vibration-resistant joints in metal-to-metal connections.

Choose these Grade 5, plain-finish hex head cap screws when you need reliable strength, readily available USA-made fasteners, and compatibility with standard 5/16-18 hardware. Upgrade your toolkit with fasteners that combine durability, consistency, and local manufacturing excellence.

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