#4-40 X 3/8" Machine Screws | Undercut Flat Head | Phillips Drive | 18/8 Stainless Steel Black Oxide (8000/Pkg.)
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Product details
| Management number | 242054186 | Release Date | 2026/07/19 | List Price | US$97.32 | Model Number | 242054186 | ||
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Premium Machine Screws Phil Undercut Flat 18/8 Stainless Black Oxide 4-40 x 3/8 are designed for precise, flush-fastening in electronics, cabinetry, and machinery. The combination of corrosion-resistant 18/8 stainless steel with a durable black oxide finish delivers long-lasting performance and a clean look in tight spaces.
Key specifications
- Thread size: 4-40
- Length: 3/8 inch
- Drive type: Phillips
- Head style: Undercut Flat
- Material: 18/8 stainless steel (AISI 304)
- Finish: Black oxide
- Type: Machine screw
Why choose these screws
- High corrosion resistance thanks to 18/8 stainless steel for durable performance in varying environments.
- Low-profile, flush-fit head reduces protrusion for clean assemblies.
- Undercut head design and Phillips drive provide reliable seating and easy drive with standard tools.
- Black oxide finish adds an extra layer of protection and a professional appearance on dark assemblies.
Ideal applications
- Electronics enclosures and panels
- Appliances, motors, and equipment assemblies
- Cabinetry, furniture, and machinery where a flush, secure fastener is required
Choose these 4-40 x 3/8 undercut flat machine screws when you need precise fit, sturdy hold, and a corrosion-resistant solution that blends with metallic surfaces while delivering a clean, professional finish.
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