4-40 X 1/2″ Socket Cap Screws Button Head Hex Socket Drive Alloy Steel Zinc Plated (400 / Pkg.) Budget

Cap Screws Button Socket in alloy steel with a zinc finish delivers strong, reliable fastening in a compact, low-profile design. Sized at 4/40 x 1/2, these cap screws are ideal for applications requiring a smooth, rounded button head and a secure socket drive.

Designed for precision assemblies, these button socket cap screws combine durable alloy steel with a corrosion-resistant zinc coating, providing lasting performance in indoor environments, machinery, electronics enclosures, and furniture hardware. The socket drive ensures a flush seating and clean aesthetic while delivering dependable torque transfer.

Key features

Head style: Button (domed) socket cap screw

Drive type: Socket (hex) drive for secure tightening

Material: Alloy steel for strength and durability

Finish: Zinc plating for corrosion resistance

Thread size: 4/40

Length: 1/2 inch

Applications

Perfect for general-purpose fastening where a low-profile head is desired, including electronics enclosures, automotive interior components, machinery assemblies, and furniture hardware. The combination of strength, precision, and a clean finish helps ensure both performance and aesthetics in your projects.

Specifications

Head: Button (domed) socket cap

Drive: Socket hex

Material: Alloy steel

Finish: Zinc plated

Thread size: 4/40

Length: 1/2 in