1/2-20 X 1-1/4" Flat Head Cap Screws | Fine Thread | Alloy Steel Thermal Black Oxide (100 / Pkg.)

Mutual ScrewSKU: 5120CSFBB

Price:
Sale price$120.59per 100( $1.21 each)
Pieces 100
Measurement type Inch
Thread size 1/2-20
Length 1-1/4
Material Alloy Steel
Finish Thermal Black Oxide
Drive Hex Socket
Head style Flat
Thread style Fully Threaded
Weight 7.12 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

Cap Screws Flat Socket Fine Thread Alloy Thermal Black Oxide 1/2-20 x 1 1/4 deliver superior strength and a durable finish for precision assemblies. Crafted from high-strength alloy steel and finished with a thermal black oxide coating, these socket head cap screws provide reliable performance in demanding environments while maintaining a sleek, low-profile appearance.

Key Features

  • Drive Type: Socket head (Allen) for secure, high-torque installation
  • Size (Diameter x Thread): 1/2-20
  • Length: 1 1/4 in
  • Thread Type: Fine thread, 1/2-20 (20 TPI)
  • Material: Alloy steel for high strength
  • Finish: Thermal Black Oxide for corrosion resistance and a clean aesthetic

Benefits & Applications

Designed for assemblies requiring precision alignment and robust torque retention, these cap screws are ideal for machinery, automotive builds, equipment assemblies, and other high-stress fastening tasks. The combination of an alloy steel core and a protective black oxide finish helps resist wear, corrosion, and galling, while the fine 1/2-20 thread provides precise clamping in tight tolerances.

Installation & Care

  • Use a properly sized Allen key to achieve recommended torque without over-tightening.
  • Inspect threads before installation; apply a light anti-seize lubricant if necessary to facilitate future removal.
  • Store with clean threads to prevent corrosion and ensure easy future reuse.

Enhance your project with these reliable, high-quality cap screws. Add to cart and secure durable fastening for your engineering, automotive, or industrial applications.

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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