#4-40 X 1/4" Machine Screws | Indented Hex Head | Slotted Drive | Steel Black Oxide (10000/Pkg.)

Engineered for secure, durable fastening, the Machine Screws Slotted Indented Hex Washer Serrated Steel Black Oxide 4-40X1/4 is ideal for electronics, enclosures, control panels, and light machinery. This precision screw combines a slotted drive with an indented hex washer head to deliver a flush, snag-free installation in compact assemblies.

• Drive Style: Slotted for broad compatibility with standard screwdrivers.
• Head & Washer: Indented hex washer head with a serrated washer to grip the surface and resist loosening from vibration.
• Material & Finish: High-strength steel with a black oxide finish for reduced glare and mild corrosion resistance.
• Thread & Length: 4-40 thread size with a 1/4" length (small-diameter machine screw for precise fastening).

Designed for reliability in tight spaces, these machine screws provide a secure hold without protruding hardware. The serrated washer helps bite into panels and plates, while the black oxide finish preserves a clean appearance in interior applications.

Applications

• Electrical enclosures and control panels
• Machinery assemblies and instrument housings
• Electronics enclosures and dash panels

Choose these 4-40x1/4 machine screws when you need a compact, versatile fastener that pairs a traditional slotted drive with a robust indented hex washer design for enhanced grip and vibration resistance.