4-40 X 5/16″ Socket Cap Screws Button Head Hex Socket Drive Alloy Steel (200 / Pkg.) High Quality
Original price was: $21.95.$11.41Current price is: $11.41.
For orders under $150.00, a shipping fee of $12.99 applies.
Discover the Cap Screws Button Socket Alloy Steel 4/40 x 5/16 â€ââ⠚¬Â a compact, high-strength fastener engineered for precise assemblies. This button-head socket cap screw delivers a clean profile and reliable performance for electronics enclosures, machinery, and automotive applications.
Key Features
Material: Alloy steel for enhanced strength and durability.
Head Style: Button head (socket cap) for a sleek, low-profile finish.
Drive Type: Internal hex (Allen) drive for secure seating and easy installation.
Thread Size: 4-40 thread, a common fine-thread for small fastenings.
Length: 5/16 inch.
Recommended Uses: Electronics enclosures, precision machinery, and other assemblies where a neat, flush appearance matters.
Why Choose Alloy Steel Cap Screws
Alloy steel cap screws provide superior tensile strength, rugged performance, and long-lasting reliability in demanding environments. The button socket design minimizes protrusion while maintaining robust clamping force.
Specifications
Type: Cap screw, button socket head
Material: Alloy steel
Thread: 4-40
Length: 5/16 in
Drive: Internal hex (Allen)
Upgrade your fastener collection with these precision-capable, alloy steel cap screws. Order now to ensure a secure fit and dependable performance in your next project.





