Which screw is harder, M3.5 or M4?M5?

They're both hard, but the M4 and M5 model is harder.

How do I determine if I need to pre-drill holes in my wood?

When your wood is very hard, please pre-drill holes in the boards to prevent them from cracking.

Is this a brass screw?

No,They're made of carbon steel. and yellow zinc plated screws, which are harder than brass screws. But brass screws are more beautiful. Their ability to resist rust is the same.

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🛠️ Screw it right, screw it tight — the pro’s choice for lasting builds!

POWER READY - High-strength Philips flat head perfectly compatible with manual and electric screwdrivers for effortless driving.
BUILT TO LAST - Thicker zinc coating ensures unbeatable rust resistance for over 72 hours in salt spray tests.
PRECISION FIT - 3.5x16mm fine thread screws designed for a flawless grip in wood, plasterboard, and more.
DAMAGE RESISTANT - Heat-treated alloy steel construction minimizes head damage, keeping your project flawless.
VERSATILE PERFORMANCE - Ideal for home improvement and engineering projects—wood, concrete, plastic, and beyond.

These 3.5x16mm yellow zinc galvanized flat head wood screws combine heavy-duty corrosion resistance with heat-treated high tensile strength. Designed for precision and durability, they excel in a variety of materials including wood, plasterboard, and concrete, making them the ultimate fastener for professional and DIY projects alike.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

₨299

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Manufacturer	Zhengzhou HP Ltd
Part number	ZZWLSA08078
Item Weight	100 g
Manufacturer reference	ZZWLSA08078
Size	3.5x16mm
Colour	Yellow
Finish	Zinc Plated
Material	alloy_steel，Carbon Steel， Zinc Passivated
Shape	cylindrical
Head Style	Cross Flat Head
Cutting Diameter	3.5 Millimetres
Measurement System	Metric
Special Features	Others
Specific uses	home and engineering use
Batteries included?	No
Batteries Required?	No
Item diameter	3.5 Millimetres

3.5x16mm Screws for Wood,Flat Head Wood Screws,Fine Thread and Yellow Zinc Galvanized (100pcs)

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