Seachoice – Phillips Machine Screw – Flat Head, 5/16-18 X 5 – 00317

Description

Seachoice Phillips Machine Screw Flat Head, 5/16″-18 x 5″ 00317

Reliable Fastening with a Low-Profile Finish

The Seachoice Phillips Machine Screw – Flat Head, 5/16″-18 x 5″ – 00317 is built to deliver solid fastening with a clean, flush finish. Whether youre assembling structural components or replacing hardware in marine or industrial settings, this long 5-inch stainless steel screw provides the strength and corrosion resistance you need.

With its flat head design and Phillips drive, this machine screw is ideal for countersunk applications where appearance and alignment are critical.

Key Features

Thread Size & Length: 5/16″-18 thread, 5″ long

Head Type: Flat head for smooth, flush surface alignment

Drive Style: Phillips for easy, secure installation

Material: Made from marine-grade stainless steel for lasting durability

Quantity: Sold individually

Compatibility

Perfect for use with pre-tapped holes in metal or composite surfaces

Ideal for marine hardware, industrial builds, RV applications, and repair jobs

Works with standard nuts and washers in matching thread size

Ideal Use Cases

Mounting or repairing marine deck plates and access covers

Fastening structural components on trailers, docks, or workstations

Countersunk applications in marine cabinetry, electronics, and hull fittings

DIY or professional upgrades where corrosion resistance and long length are required

Why Flat Head Stainless Screws Matter

Choosing a flat head stainless screw ensures your fastener sits flush with the material surface, preventing snags and preserving clean aesthetics. In marine environments, stainless steel construction helps fight corrosionmaking these screws a dependable choice for strength and long-term reliability.

Frequently Asked Questions

Is this screw suitable for saltwater exposure?

Yes. Its stainless steel composition is specifically suited for both saltwater and freshwater environments.

Can I use this screw in wood or fiberglass?

Yes, but pre-drilling is recommended for precise countersinking and to prevent splitting.

Do I need a specific tool for installation?

A standard Phillips screwdriver or bit driver is all you need for a secure and flush fit.