5/8″-11 X 4″ Machine Screws Flat Head Slotted Drive Plain Steel (25/Pkg.) Order Now

Our Machine Screws Slotted Flat Plain Steel 5/8-11 x 4 are precision-machined fasteners designed for secure, flush mounting in metal-to-metal assemblies. Made from plain (low-carbon) steel, these slotted flat-head machine screws offer reliable strength for everyday equipment, enclosures, and hardware projects. The 5/8″-11 thread size is a coarse thread ideal for many tapped holes and nuts, while the 4″ length provides versatile reach for multi-layer assemblies.

Key specifications

Size: 5/8″-11 x 4

Thread: 5/8″ diameter, 11 threads per inch (coarse)

Length: 4 inches

Head style: Flat head (countersunk)

Drive: Slotted

Material: Plain steel (low-carbon)

Finish: Uncoated

Applications: For use with tapped holes or nuts in metal panels, enclosures, and machinery

Why choose these screws

Choose these screws when you need a flush, low-profile mount with dependable strength. Their plain steel construction provides solid performance in non-corrosive environments and is suitable for general-purpose hardware assemblies.

Installation tips

Ensure your mating hole is clean and properly sized. If mating holes are not pre-tapped, pair with a corresponding nut. Use appropriate torque to avoid thread damage, and consider washers for load distribution when mounting through panels.