[25 PKG] Hex Head Cap Screws Grade 8 Steel Zinc Yellow Bake Fine Thread 9/16-18 x 4 1/2"" (PT)

Mutual ScrewSKU: 5772CH8

Price:
Sale price$70.03per 25( $2.80 each)
Pieces 25
Measurement type Inch
Thread size 9/16-18
Diameter 9/16
Length 4-1/2
Material Steel
Grade Grade 8
Finish Yellow Bake
Head style Hex
Threads per inch 18
Thread style Partially Threaded
Weight 8.79 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 assemblies, these Hex Head Cap Screws are Grade 8 steel with a zinc yellow baked finish that resists corrosion in demanding environments. Featuring a fine thread of 9/16-18 and a long 4 1/2 in length, they deliver reliable torque and a secure hold in thick components.

Key specifications

  • Drive type: Hex head for high torque and smooth installation
  • Material: Grade 8 steel
  • Finish: Zinc yellow baked for corrosion resistance
  • Thread: Fine thread 9/16-18
  • Length: 4 1/2 inches

Ideal applications

These screws are suited for heavy equipment, automotive assemblies, machinery, and construction projects that require strong, dependable fasteners with precise thread engagement.

Why choose these hex head cap screws?

With Grade 8 strength and a protective zinc finish, they stand up to high-load applications while resisting corrosion. The fine thread provides superior pull for thick material and improved grip in tight tolerances. Pair with compatible nuts and tapped holes for a secure, durable fastening solution.

Ready to equip your project? Add these hex head cap screws to your cart for reliable performance on rugged builds.

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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