[100 PKG] Hex Head Cap Screws Grade 8 Steel Plain (USA Made) 5/16-18 x 3/4

Mutual ScrewSKU: 3112CH8PDBB

Price:
Sale price$32.64 Regular price$36.27per 100( $0.33 each)
Pieces 100
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 3/4
Material Steel
Grade Grade 8
Finish Plain
Head style Hex
Threads per inch 18
Thread style Partially Threaded
Weight 2.46 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 heavy-duty fastening, our Hex Head Cap Screws Grade 8 Steel Plain (USA Made) 5/16-18 x 3/4 deliver exceptional strength and reliability for demanding assemblies. Made in the USA from hardened steel, these screws offer robust torque resistance and long-lasting performance in rugged environments.

Key features

  • Material: Grade 8 steel with a plain, uncoated finish for versatile compatibility across fasteners and coatings.
  • Head type: Hex head cap screw designed for secure driving with common wrenches or sockets.
  • Thread size: 5/16-18 standard coarse thread for robust engagement.
  • Length: 3/4 inch overall length suitable for a range of joining thicknesses.
  • Finish: Plain finish; ready for additional coatings if needed.
  • Origin: USA made, supporting domestic manufacturing.

Why choose Grade 8 hex screws

Grade 8 fasteners are engineered for high-strength assemblies and demanding environments. The hardened steel construction provides superior torque tolerance and fatigue resistance, making these screws ideal for automotive, machinery, and industrial equipment applications. Pair with compatible nuts and washers for a secure, long-lasting connection.

Specifications

  • Thread size: 5/16-18
  • Length: 3/4 in
  • Material: Grade 8 steel
  • Finish: Plain
  • Head style: Hex head
  • Type: Cap screw
  • Origin: USA

Add these Grade 8 hex cap screws to your cart for reliable, high-strength fastenings in a wide range of projects.

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800-222-0324

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