#4-40 X 1/2" Flat Head Cap Screws | Alloy Steel Thermal Black Oxide (100 / Pkg.)

Mutual ScrewSKU: 0408CSFBB

Price:
Sale price$9.01per 100( $0.09 each)
Pieces 100
Measurement type Inch
Thread size #4-40
Length 1/2
Material Alloy Steel
Finish Thermal Black Oxide
Drive Hex Socket
Head style Flat
Threads per inch 40
Thread style Fully Threaded
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 Flat Socket Alloy Thermal Black Oxide 4-40 x 1/2 inch are precision fasteners designed for reliable, high-strength assemblies. Built from sturdy alloy steel and finished with a thermal black oxide, these screws deliver durable performance with a low-glare appearance suitable for electronics, machinery, and professional enclosures.

  • Material: Alloy steel for excellent strength and part integrity.
  • Finish: Thermal black oxide provides corrosion resistance and a sleek, non-reflective surface.
  • Thread size: 4-40 UNC, a common precision thread standard for small hardware.
  • Length: 1/2 inch, ideal for compact assemblies and clean fits.
  • Drive type: Internal hex (Allen) socket drive for secure tightening.
  • Head type: Cap screw with flat socket design for streamlined profiles in tight spaces.
  • Applications: Electronics enclosures, precision machinery, instrumentation, and hobby projects requiring dependable fasteners with a clean finish.

Engineered for dependable performance across demanding environments, these cap screws simplify assembly and deliver consistent torque with minimal wear. Ideal for replacements or new builds that require 4-40 x 1/2 inch socket cap screws with a durable alloy core and a discreet finish.

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