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Home / Screws / M2 M3 M4 M5 M6 M8 Stainless Steel 304 Ultra-Thin Head CM Large Flat Head Flat C Head Extremely Low Profile Socket Head Cap Screws

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material Stainless Steel 304
Head Style Ultra-Thin Flat Head (C-Head)
Drive Type Socket (Allen/Hex)
Available Sizes M2, M3, M4, M5, M6, M8
Thread Pitch Standard Coarse Metric
Finish Polished Silver
Profile Height Extremely Low Profile
Application Precision Electronics and Machinery
Corrosion Resistance High (Indoor and Mild Outdoor)
Package Content Assorted Kit with Storage Case

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 3/5

Sizes run slightly small

The quality is good, but I noticed the M5 screws were a bit tight in standard M5 tapped holes. Had to tap the holes out slightly. Otherwise, they work well.

A

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for tight spaces

These screws are exactly what I needed for my custom keyboard build. The ultra-thin head allows them to sit completely flush without protruding, which was critical for the case clearance.

A

Anonymous

Mar 22, 2026

Rating: 5/5

Great assortment kit

Having all these sizes in one box is super convenient. The organizer case keeps them sorted, and the variety covers almost all my repair needs for laptops and cameras.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Essential for drone frames

Used the M3 and M4 sizes for my racing drone frame. They are incredibly lightweight yet strong enough to hold the motor mounts securely. Highly recommended for RC applications.

A

Anonymous

Mar 14, 2026

Rating: 4/5

Good quality steel

The 304 stainless steel feels durable and hasn't shown any signs of rust after a few months in my workshop. The socket depth is adequate, though you need a precise hex key to avoid stripping.

A

Anonymous

Mar 14, 2026

Rating: 5/5

Clean aesthetic finish

I use these for visible hardware on modern furniture projects. The polished finish looks very premium, and the low profile keeps the design sleek and minimal.

5 FAQ

Q: Is the thread full length or partial?

A: These screws feature full threading from just under the head to the tip, maximizing grip strength in thinner materials.

Q: Do these come with a hex key included?

A: This specific bulk kit does not include hex keys. It contains only the screws and the storage organizer. Keys must be purchased separately.

Q: Are these screws compatible with aluminum threads?

A: Yes, these stainless steel screws are commonly used with aluminum components. However, we recommend using an anti-seize compound to prevent galling between the dissimilar metals.

Q: Can these be used outdoors in rainy conditions?

A: While 304 Stainless Steel offers good corrosion resistance, it is best suited for indoor or sheltered outdoor use. For constant exposure to saltwater or harsh chemicals, 316 grade would be more appropriate.

Q: What is the exact height of the M4 head?

A: The M4 ultra-thin flat head has a profile height of approximately 1.5mm, making it significantly lower than standard socket cap screws.

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