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Home / Screws / Extended Panel Self-Tapping Screws Shanghai High-Strength Blue-White Zinc Plated Cross Recessed Countersunk Flat Head Wood Screws M4 M5

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Head Type Countersunk Flat Head
Drive Style Cross Recessed (Phillips)
Material High-Strength Carbon Steel
Surface Finish Blue-White Zinc Plated
Thread Type Self-Tapping
Available Sizes M4, M5
Application Wood, Extended Panels, Furniture Assembly
Origin Shanghai, China
Corrosion Resistance Moderate (Indoor Use Recommended)
Package Content Bulk Box of Screws

6 reviews

A

Anonymous

Mar 25, 2026

Rating: 4/5

Good strength, sharp threads

Very sharp self-tapping threads made drilling pilot holes unnecessary for softwood. The blue-white finish is distinct. One star off because the box was slightly dented on arrival, but the screws inside were fine.

A

Anonymous

Mar 20, 2026

Rating: 5/5

Perfect for furniture assembly

These screws worked flawlessly for assembling my new office desk. The countersunk head sits perfectly flush with the wood surface, and the zinc plating gives them a nice clean look.

A

Anonymous

Mar 20, 2026

Rating: 4/5

Solid choice for woodworking

Great screws overall. They drive smoothly into hardwood and softwood alike. The plating seems durable, though I wouldn't recommend them for outdoor use without extra sealant.

A

Anonymous

Mar 19, 2026

Rating: 5/5

Fast shipping and great product

Arrived quickly from Shanghai. The consistency in size and threading is impressive. I will definitely order more for my next workshop project.

A

Anonymous

Mar 18, 2026

Rating: 5/5

High quality industrial grade

I use these for custom cabinetry projects. The high-strength steel holds up well under torque without stripping the heads. Excellent value for the quantity provided.

A

Anonymous

Mar 04, 2026

Rating: 5/5

Exactly as described

Needed M5 screws for an extended panel project and these fit the bill perfectly. The cross recess is deep enough to prevent cam-out even with a power drill.

5 FAQ

Q: Are these screws suitable for outdoor decking?

A: While they are zinc-plated for some corrosion resistance, we recommend using stainless steel or heavily coated screws for prolonged outdoor exposure to ensure maximum longevity.

Q: Is the Phillips head compatible with Pozidriv drivers?

A: Yes, a standard Phillips driver will work, but for optimal torque transfer and to reduce slipping, a Pozidriv (PZ) driver is often preferred for this type of cross recess.

Q: What is the difference between M4 and M5 sizes?

A: M4 refers to a 4mm nominal diameter, while M5 is 5mm. Please check your project specifications to ensure you select the correct diameter for your load requirements.

Q: Can these be used with metal studs?

A: These are primarily designed for wood and extended panels. For metal studs, we recommend using screws specifically engineered with a different thread pitch for metal applications.

Q: Do I need to pre-drill holes for hardwood?

A: For very dense hardwoods, we suggest pre-drilling a small pilot hole to prevent the wood from splitting, although the self-tapping design works well on most standard woods without it.

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