5/16″-18 X 1″ Machine Screws Flat Head Slotted Drive Silicon Bronze (25/Pkg.) Buy Direct

Machine Screws Slotted Flat Silicon Bronze 5/16-18 x 1 are precision-engineered fasteners designed for dependable performance in metal and wood assemblies. Crafted from silicon bronze, these flat-head screws offer excellent corrosion resistance and non-magnetic properties, making them ideal for marine, electrical, and cabinetry applications.

With a slotted drive for easy installation, these machine screws feature a 5/16 inch diameter, 18 threads per inch (5/16-18 UNC), and a length of 1 inch. The flat (countersunk) head sits flush in the assembly, providing a clean, professional finish.

Why choose silicon bronze machine screws?

Excellent corrosion resistance in outdoor and humid environments

Non-magnetic copper alloy for sensitive electrical or magnetic applications

Strong, durable threads that resist galling in many materials

Versatile for metal-to-metal, wood with nut, or tapped-hole assemblies

Slotted drive simplifies insertion and removal with common screwdrivers

Specifications

Material: Silicon Bronze

Head Type: Flat (countersunk)

Drive Type: Slotted

Diameter: 5/16 in (0.3125 in)

Thread: 18 TPI (UNC)

Length: 1 in

Upgrade your hardware projects with these high-quality silicon bronze machine screws and enjoy reliable performance, a clean finish, and long-lasting corrosion resistance.