Phillips Oval Head Machine Screws 316 Stainless Steel - 1/4ft-20 x 3

Our review of these Phillips oval head machine screws finds them best suited to projects where corrosion resistance and a finished appearance matter most. The package of 250 screws offers bulk quantity for larger jobs, and the 316 stainless construction is the single biggest reason to buy: it stands up to saltwater and damp environments far better than standard stainless. Reviewers looking for a decorative, tamper-resistant fastener that also works with nuts or tapped holes will appreciate the balance of form and function in these screws.

Key Features

• 316 Stainless Steel: Provides superior corrosion and rust resistance ideal for marine and humid environments.
• Phillips Oval Head: The countersunk bottom and raised domed top deliver a decorative finish while allowing the screw to sit neatly when used with a countersunk opening.
• 1/4'-20 x 3 size: A common machine screw dimension that fits many tapped holes and pairs with standard 1/4'-20 nuts for secure assemblies.
• Quantity 250: Supplied in bulk for production runs, maintenance supplies, or larger repair projects to avoid frequent reordering.
• Suitable with nuts or tapped holes: Versatile in application, these screws can be used through components with nuts or driven into threaded parts for a secure hold.

Who It's For

These screws are well suited to marine hardware installers, boat repair shops, exterior architectural trim, and anyone needing a corrosion-resistant, decorative fastener in volume. The raised oval head provides a more finished look than plain flat-head machine screws, making them a good choice where appearance is important as well as performance.

Those who need non-standard head styles (such as flat countersunk flush heads) or very fine thread sizes should look elsewhere, since these are specific 1/4'-20 machine screws with an oval head profile rather than a flush finish.

Pros & Cons

Pros

• Excellent corrosion resistance from 316 stainless steel, making them reliable in saltwater and damp conditions.
• Decorative oval head offers a finished appearance while still seating in a countersunk hole.
• Sold in bulk (250) which is convenient for repeat jobs and reduces the need to reorder frequently.
• Works with both nuts and tapped holes, adding installation flexibility.

Cons

• Oval head is not fully flush when countersunk, so it may not suit applications requiring a completely flat surface.

Specifications

Brand	RAW PRODUCTS CORP
Material	316 Stainless Steel
Head Type	Phillips Oval Head (countersunk bottom, raised top)
Thread Size	1/4'-20
Length	3 in
Pack Quantity	250
Typical Use	Used with nuts or driven into tapped holes; suitable for saltwater environments

Our Verdict

For anyone needing a corrosion-resistant, decorative machine screw in quantity, these 1/4'-20 x 3 Phillips oval head screws represent a practical, cost-effective choice. The 316 stainless construction and bulk pack make them particularly good value for marine and outdoor projects where rust resistance and appearance both matter.

Frequently Asked Questions

Are these screws suitable for marine use?
Yes. The 316 stainless steel construction resists corrosion and is ideal for saltwater and moist environments.

Can these screws be used with nuts?
Yes. They are machine screws designed to be used with nuts or driven into tapped holes.

Will the oval head sit flush in a countersunk hole?
The bottom of the head is countersunk, but the raised domed top means the head will not be fully flush like a flat countersunk screw.