#4-40 X 3/16" Button Head Cap Screws | Steel Black Oxide (1 / Pkg.)

Mutual ScrewSKU: 0403CSBKC

Price:
Sale price$23.72per 100( $0.24 each)
Pieces 100
Measurement type Inch
Thread size #4-40
Length 3/16
Material Steel
Finish Black Oxide
Drive Hex Socket
Head style Button
Threads per inch 40
Weight 1.0 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

Cap Screws Button Socket Steel Black Oxide 4-40 x 3/16 offers a compact solution for precise fastening in tight spaces. The button head provides a low-profile look while delivering dependable clamping power in electronics, fixtures, and machinery.

Crafted from durable steel and finished in black oxide, these socket cap screws resist corrosion and provide a smooth, professional appearance in assembled projects. The 4-40 thread with a 3/16 inch length makes them ideal for small assemblies where space is at a premium.

Key specifications

  • Head style: Button (button socket) head for a low-profile, clean look
  • Material: Steel
  • Finish: Black oxide for a sleek appearance and added corrosion resistance
  • Thread size: 4-40
  • Length: 3/16 inch
  • Drive type: Internal hex (Allen) drive
  • Applications: Electronics, small assemblies, precision machinery, fixtures

These cap screws deliver reliable performance in a variety of projects. Ideal for electronics enclosures, hobbyist builds, and industrial fixtures where a low-profile, strong fastener is essential. Add them to your toolkit for fast, secure finishes on every task.

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