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Home / Connectors and Fasteners / 304 Stainless Steel Cup Head Cylinder Head Hex Socket Screws, Bolts M2 M3 M4 M5 M6 M8 M10 M12 M16-M20

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material 304 Stainless Steel
Head Style Socket Cap Head
Drive Type Internal Hexagon
Thread Standard Metric ISO
Strength Grade A2-70
Surface Finish Plain Polished
Available Sizes M2, M3, M4, M5, M6, M8, M10, M12, M16, M20
Corrosion Resistance High
Application Machinery, Furniture, Automotive
Package Type Secure Plastic Box

5 reviews

A

Anonymous

Apr 19, 2026

Rating: 5/5

Fast shipping

Arrived earlier than expected. The packaging kept all the sizes organized. Will buy again for future automotive repairs.

A

Anonymous

Apr 06, 2026

Rating: 5/5

Perfect for my CNC project

These screws fit perfectly into my machine parts. The hex socket is deep enough for good torque without stripping. Highly recommend for precision work.

A

Anonymous

Mar 28, 2026

Rating: 5/5

Exactly as described

Used for furniture assembly. The head sits flush and looks professional. Great assortment of sizes available in the store.

A

Anonymous

Mar 27, 2026

Rating: 4/5

Good value

Threads are clean and consistent. The only reason for 4 stars is that the plastic box arrived slightly cracked, but the screws inside were fine.

A

Anonymous

Feb 22, 2026

Rating: 5/5

High quality steel

I used these for an outdoor garden structure. No signs of rust after three months of exposure to rain. The 304 stainless steel is genuine.

5 FAQ

Q: Is this material magnetic?

A: 304 Stainless Steel is generally non-magnetic, though slight magnetism may occur due to cold working during threading.

Q: Can I use these in a marine environment?

A: Yes, 304 stainless steel offers good corrosion resistance, but 316 grade is recommended for prolonged direct saltwater exposure.

Q: What is the hardness rating?

A: These fasteners comply with the A2-70 strength class, suitable for most general industrial applications.

Q: Do you sell sizes larger than M20?

A: Currently, this listing supports sizes up to M20. Please contact us for custom bulk orders regarding larger sizes.

Q: What tool do I need to install these screws?

A: You will need a metric Allen key or hex driver matching the specific screw size purchased.

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