[1200 BULK] Hex Head Cap Screws Grade 5 Steel Zinc Plated Coarse Thread 5/16-18X1 1/8

Mutual ScrewSKU: 3118CH5OKC

Price:
Sale price$168.78per 1200( $0.14 each)
Pieces 1200
Measurement type Inch
Thread size 5/16-18
Diameter 5/16
Length 1-1/8
Material Steel
Grade Grade 5
Finish Zinc Plated
Head style Hex
Threads per inch 18
Thread style Partially Threaded
Weight 37.0 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

Engineered for strength and reliability, this Hex Head Cap Screw delivers high-performance fastening for heavy-duty projects. Crafted from Grade 5 steel and finished with a zinc coating, it resists corrosion while maintaining exceptional torque and durability. With a coarse thread and a 5/16-18 size, this screw is ideal for fast, secure assemblies in metal and wood applications. The 1-1/8 inch length provides strong engagement in a wide range of materials.

Features

  • Material: Grade 5 steel for high strength and toughness.
  • Finish: Zinc plated for corrosion resistance and long-lasting performance.
  • Thread: Coarse 18 threads per inch (5/16-18).
  • Size & Length: 5/16-18 x 1-1/8 inches.
  • Head Type: Hex head designed for easy driving with standard wrenches or sockets.
  • Application: Ideal for automotive, construction, machinery, and general hardware assemblies.

Specifications

  • Head style: Hex head
  • Material: Grade 5 steel
  • Finish: Zinc plated
  • Thread pitch: Coarse, 18 TPI
  • Example size: 5/16-18 x 1-1/8 in

Whether you're outfitting a new build, repairing machinery, or completing a maintenance project, these hex head cap screws provide reliable clamping power and repeatable performance. Stocked in standard size for quick procurement, they’re a dependable choice for professional installers and DIY enthusiasts alike.

Can We Help?

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

Recently viewed