New Release 4-40 X 5/16″ Socket Cap Screws Hex Socket Drive Alloy Steel Black Oxide (300 / Pkg.)
Original price was: $17.76.$9.24Current price is: $9.24.
For orders under $150.00, a shipping fee of $12.99 applies.
Socket Head Cap Screws Alloy Steel Thermal Black Oxide 4-40 X 5/16 are high-strength fasteners designed for precise, secure assemblies. Crafted from alloy steel and finished in a thermal black oxide coating, these screws deliver dependable performance in tight spaces where a recessed, low-profile head is required. The 4-40 thread size with a 5/16 inch length makes them a versatile choice for a wide range of mechanical and electronics projects.
Key Features
Material: Alloy steel
Finish: Thermal black oxide
Head style: Socket head cap screw
Thread size: 4-40
Length: 5/16 in
Drive type: Hex socket
Applications
Ideal for precision machinery, electronics enclosures, and automotive components
Suitable for spaces where a flush, low-profile head is needed
Useful for maintenance and DIY projects requiring compact fasteners
Specifications
Material: Alloy steel
Finish: Thermal black oxide
Head style: Socket head
Drive type: Hex socket
Thread size: 4-40
Length: 5/16 in
Upgrade your toolkit with these dependable socket head cap screws and enjoy secure, durable fastening in a compact, low-profile design.





