[25 PKG] Hex Head Cap Screws Grade 8 Steel Zinc Yellow Bake Fine Thread (USA Made) 9/16-18 x 5 1/2

Mutual ScrewSKU: 5788CH8DBB

Price:
Sale price$87.72 Regular price$97.46per 25( $3.51 each)
Pieces 25
Measurement type Inch
Thread size 9/16-18
Diameter 9/16
Length 5-1/2
Material Steel
Grade Grade 8
Finish Yellow Bake
Head style Hex
Threads per inch 18
Thread style Partially Threaded
Weight 10.54 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 high-strength performance, these Hex Head Cap Screws are crafted from Grade 8 steel and finished with a durable zinc yellow baked coating. Made in the USA, they combine exceptional strength with reliable corrosion resistance for demanding industrial applications.

  • Material: Grade 8 steel for maximum tensile strength
  • Finish: Zinc yellow baked coating for corrosion resistance and an identifiable yellow finish
  • Thread: Fine thread (18 TPI) for precise adjustment and strong clamp
  • Head: Standard hex head for easy wrenching and consistent torque
  • Size: 9/16-18 x 5 1/2 (USA-made)
  • Made in USA: Domestic manufacturing ensures quality control

Applications

Ideal for automotive assemblies, machinery installations, construction equipment, and heavy equipment maintenance where high strength fasteners are required with precise thread engagement and reliable locking power.

Why choose this screw?

Combining Grade 8 strength, a durable zinc finish, and a precise fine thread, these hex cap screws deliver dependable performance in tough environments, making them a trusted choice for professionals 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

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