Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Screws
Origin	-
Material	304 Stainless Steel
Head Type	Cross Round Head with Integrated Washer
Drive Style	Phillips (Cross)
Point Type	Self-Drilling Drill Point
Available Sizes	M4.2, M4.8
Thread Type	Self-Tapping
Finish	Polished Silver
Corrosion Resistance	High (Suitable for Outdoor Use)
Application	Metal Sheets, Steel Frames, HVAC Ducts
Package Contents	Assorted Box of Screws

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Rust resistant as advertised

Installed these on my garden shed six months ago. Despite heavy rain and sun exposure, there is absolutely no sign of rust. The 304 stainless steel claim holds up.

Anonymous

Mar 25, 2026

Rating: 4/5

Good quality, slightly hard to drive manually

The build quality is excellent and they look very professional once installed. However, they are quite tough to drive in with a manual screwdriver; definitely use a power drill for best results.

Anonymous

Mar 21, 2026

Rating: 5/5

Saved me so much time

The self-drilling tip is sharp and effective. I was able to finish my fencing project in half the time it usually takes. The washer sits flat and tight every time.

Anonymous

Mar 21, 2026

Rating: 3/5

Good but limited size options in this pack

The screws themselves work well, but I wished this specific kit had more variety in lengths. The diameter options M4.2 and M4.8 are great, but check the length before buying.

Anonymous

Mar 06, 2026

Rating: 5/5

Perfect for metal roofing projects

These screws drilled right through the steel sheets without needing a pilot hole. The integrated washer provides a great seal, and the stainless steel quality seems top-notch. Highly recommended for outdoor construction.

Anonymous

Mar 03, 2026

Rating: 5/5

Bulk buy success

We ordered these for a large commercial job. Consistency in size and thread quality was perfect across the entire box. No stripped heads or broken tips encountered.

5 FAQ

Q: Is the washer removable or fixed?

A: The washer is integrated and fixed to the screw head. It is designed to rotate with the screw to ensure a tight, weather-resistant seal upon installation.

Q: Do I need to pre-drill holes before using these?

A: No, the drill point tip is designed to penetrate metal sheets directly without the need for pre-drilling pilot holes.

Q: What is the difference between M4.2 and M4.8 sizes?

A: The number refers to the nominal thread diameter in millimeters. M4.8 has a slightly thicker shaft and can handle higher load-bearing applications compared to M4.2.

Q: Are these suitable for marine environments?

A: While 304 Stainless Steel offers good corrosion resistance, for direct saltwater immersion or harsh marine coastal areas, 316 Stainless Steel is generally recommended for maximum longevity.

Q: Can these screws be used on aluminum sheets?

A: Yes, these self-drilling screws are suitable for aluminum sheets as well as steel, provided the material thickness is within the screw's capacity.

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