5/16-18 X 1-3/4" Flat Head Cap Screws | Alloy Steel Thermal Black Oxide (100 / Pkg.)
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5/16-18 X 1-3/4" Flat Head Cap Screws | Alloy Steel Thermal Black Oxide (100 / Pkg.)

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5/16-18 X 1-3/4" Flat Head Cap Screws | Alloy Steel Thermal Black Oxide (100 / Pkg.)

Mutual ScrewSKU: 3128CSFBB
Price:
$50.04per 100( $0.50 each)
Pieces 100
Measurement type Inch
Thread size 5/16-18
Length 1-3/4
Material Alloy Steel
Finish Thermal Black Oxide
Drive Hex Socket
Head style Flat
Thread style Fully Threaded
Weight 3.47 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 Alloy Thermal Black Oxide 5/16-18 x 1 3/4 delivers strong, reliable fastening for industrial and automotive applications. Built from high-strength alloy steel and finished in thermal black oxide, these socket cap screws combine durability with a sleek, low-profile appearance.

  • Size & Thread: 5/16-18 UNC
  • Length: 1-3/4 in
  • Head / Drive: Flat socket head cap screw with internal hex drive
  • Material: Alloy steel
  • Finish: Thermal black oxide
  • Typical Applications: Machinery, automotive assemblies, equipment fabrication, and other precision fastening needs

Why choose these cap screws? The alloy composition delivers robust shear and tensile strength, while the thermal black oxide finish protects against corrosion and wear in everyday environments. The flat socket head provides a clean, flush appearance once installed and accepts standard hex keys for quick, secure installation.

Tip: Pair with compatible nuts and washers for best performance. Store in a dry place to maintain finish and longevity.

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800-222-0324

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