304 Stainless Steel UNC Countersunk Phillips Screws | 4 Sizes

$26.89 $30.40

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Dimensions

304 Stainless Steel UNC Cross Recessed Flat Countersunk Head Screws

Upgrade your fastening projects with these premium 304 Stainless Steel Cross Recessed Flat Countersunk Head Screws. Available in multiple UNC thread sizes — 10#-24, 3/16-24, 1/4-20, and 5/16-18 — these versatile bolts are ideal for woodworking, metalworking, electronics assembly, automotive applications, and general DIY construction. The flush-mount countersunk head design ensures a clean, professional finish on any surface.

Key Features

Material: High-grade 304 Stainless Steel — corrosion-resistant, durable, and built to last in demanding environments
Head Style: Flat Countersunk — sits flush with the surface for a neat, snag-free finish
Drive Type: Cross Recessed (Phillips) — compatible with standard Phillips screwdrivers and bits
Thread Type: UNC (Unified National Coarse) — widely used standard for secure fastening
Available Sizes: 10#-24 | 3/16-24 | 1/4-20 | 5/16-18
Customizable: Available for custom orders to meet your specific project requirements

Specifications

Specification	Details
Material	304 Stainless Steel
Thread Standard	UNC (Unified National Coarse)
Head Type	Flat Countersunk
Drive Type	Cross Recessed (Phillips)
Sizes Available	10#-24, 3/16-24, 1/4-20, 5/16-18
Country of Origin	Made in China

Why Choose These Screws?

Whether you're a professional tradesperson or a weekend DIY enthusiast, these 304 stainless steel countersunk screws deliver the strength, corrosion resistance, and precision fit you need. The 304 alloy grade provides excellent resistance to rust and oxidation, making these screws suitable for both indoor and outdoor use. The flush countersunk head eliminates protruding edges, enhancing both the safety and appearance of your finished work.

Note: Manual measurement may result in minor dimensional variations. Please refer to the actual product upon receipt. We appreciate your understanding.

Frequently Asked Questions

Q: What material are these countersunk screws made from?

A: These screws are manufactured from 304 Stainless Steel, a premium alloy known for its excellent corrosion resistance, strength, and durability. This makes them suitable for a wide range of applications including outdoor, marine-adjacent, and high-humidity environments.

Q: What thread standard and sizes are available?

A: These screws follow the UNC (Unified National Coarse) thread standard and are available in four sizes: 10#-24, 3/16-24, 1/4-20, and 5/16-18 — covering a broad range of fastening needs for DIY, construction, and industrial applications.

Q: Are these screws compatible with a standard Phillips screwdriver?

A: Yes, the cross recessed (Phillips) drive is fully compatible with standard Phillips screwdrivers and power drill bits, making installation quick and easy with tools you likely already own.

Q: Can these screws be used outdoors?

A: Absolutely. The 304 stainless steel construction provides strong resistance to rust and oxidation, making these countersunk screws an excellent choice for outdoor furniture assembly, decking, fencing, and other exterior applications.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.