[50 PKG] Hex Head Cap Screws Grade 5 Steel Zinc Plated 5/16-18 X 3-1/2

Mutual ScrewSKU: 3156CH5

Price:
Sale price$19.28per 50( $0.39 each)
Pieces 50
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 3-1/2
Material Steel
Grade Grade 5
Finish Zinc Plated
Head style Hex
Threads per inch 18
Thread style Partially Threaded
Weight 5.0 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

Hex Head Cap Screws Grade 5 Steel Zinc Plated 5/16-18 X 3-1/2 deliver dependable holding power in a compact, versatile package. Made from Grade 5 steel and zinc-plated for corrosion resistance, these screws are built to perform in harsh environments and demanding applications.

Overview

Designed for heavy-duty fastening, these hex head cap screws feature a durable Grade 5 steel body, with a protective zinc finish to resist rust and wear. The 5/16-18 coarse thread (UNC) provides reliable engagement in a wide range of materials and is ideal for automotive, machinery, and general construction projects.

Specifications

  • Head type: Hex head
  • Material: Grade 5 steel
  • Finish: Zinc plated
  • Thread size: 5/16-18 UNC (coarse)
  • Length: 3-1/2 inches
  • Drive type: External hex drive

Applications

  • Automotive assemblies and repairs
  • Industrial machinery and equipment
  • Construction and carpentry projects
  • General maintenance and fabrication

Benefits

  • High-strength Grade 5 steel for dependable performance
  • Corrosion resistance from zinc plating
  • Coarse 5/16-18 thread for easy assembly and removal
  • Appropriate length (3-1/2") for a wide range of joints

Whether you’re outfitting a workshop, repairing equipment, or completing a heavy-duty build, these Hex Head Cap Screws offer a reliable fastening solution that combines strength, durability, and ease of use.

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

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