Metal Roofing Screws #10 x 3 in 300-PCS - Rust Resistant Roofing

In this review the LIONMAX metal roofing screws are examined for homeowners and installers wanting a durable, leak-resistant fastener for metal-to-wood applications. The bottom line: these #10 x 3 in screws stand out for their corrosion-resistant Ruspert coating and EPDM sealing washer, making them a reliable choice when longevity and weather protection are the priority. The package of 300 plus a magnetic hex socket and storage box also makes them convenient for larger DIY or maintenance jobs.

Key Features

• Ruspert anti-corrosion coating: The coating is designed to withstand long-term exposure and passed 1000-hour salt spray testing for improved rust protection outdoors.
• Sharp 17 type point: The sharp point is intended to penetrate metal and wood without pre-drilling, reducing prep time on many common roofing panels.
• Aggressive thread design: High and low threads provide strong holding power to keep panels and siding tight against wind uplift and vibration.
• EPDM rubber washer: The leak-proof washer offers resistance to moisture and chemicals and helps create a durable seal in heavy rain or snow.
• Practical package: 300 screws, a 5/16 in hex head size, a free magnetic hex socket and a plastic storage box simplify jobsite organization and repeat installations.

Who It's For

This set is well suited to homeowners, contractors, and DIYers installing metal roof panels, corrugated roofing, tin sheds, pole barns, or siding where the metal thickness does not exceed 2 mm. The combination of rust protection and EPDM sealing makes it a strong option for coastal, wet, or seasonal climates where corrosion and leaks are concerns.

Those who need self-drilling performance through very thick gauge metal or who require specialized coatings or stainless steel fasteners for extreme chemical exposure should consider alternate fasteners. Also, customers who expect guaranteed self-drilling through very heavy gauge steel may encounter mixed results based on customer feedback about drill performance.

Pros & Cons

Pros

• Excellent corrosion resistance thanks to the Ruspert coating for long outdoor life.
• EPDM washer creates a reliable seal to help prevent roof leaks in bad weather.
• Good holding power from aggressive thread form and a practical package size for larger projects.
• Included magnetic 5/16 in hex socket and storage box add convenience on the job.

Cons

• Some users report mixed drill-through performance; they may not self-drill through very thick metal as consistently as expected.
• Not intended for metal thicker than about 2 mm or specialized stainless applications.

Specifications

Brand	LIONMAX
Size	#10 x 3 in
Quantity	300 pieces
Head type	5/16 in hex head
Coating	Ruspert corrosion-resistant coating (1000-hour salt spray)
Washer	EPDM rubber leak-proof washer
Included tool	1 magnetic 5/16 in hex socket

Our Verdict

For general metal roofing and siding jobs up to 2 mm metal thickness, these screws offer strong value through durable rust protection and a reliable EPDM seal; the included socket and storage box add practical convenience. Installers who need consistent self-drilling in very thick steel or who require stainless fasteners for extreme corrosion environments should evaluate alternative fasteners, but for most residential and light-commercial roofing tasks these screws are a sensible, cost-effective choice.

Frequently Asked Questions

Can these screws be used without pre-drilling?
They are designed with a 17 type sharp point to penetrate metal and wood without pre-drilling on thinner gauges, though performance may vary with thicker metal.

How well do they resist rust?
The Ruspert coating is rated to withstand 1000-hour salt spray testing, providing improved corrosion resistance for outdoor use.

Is the washer effective at preventing leaks?
The EPDM rubber washer is intended to form a watertight seal and resists moisture and chemicals, helping reduce roof leaks in heavy rain or snow.