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Home / Connectors and Fasteners / 304 Stainless Steel Hex Socket Screws Cup Head Bolts Extended Cylinder Head Screws M1.4 M3 M4 M5 M6 M8 M18

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material 304 Stainless Steel
Head Style Cylindrical Head (Cap)
Drive Type Hex Socket (Allen)
Thread Size Options M1.4, M3, M4, M5, M6, M8, M18
Surface Finish Plain / Polished
Strength Grade A2-70
Thread Standard Metric ISO
Package Contents 100 Pieces per Box
Application Machinery, Electronics, DIY Assembly
Country of Origin China

5 reviews

A

Anonymous

Apr 04, 2026

Rating: 4/5

Good but packaging loose

The screws themselves are excellent quality, but the plastic box arrived slightly cracked. Product inside was safe though.

A

Anonymous

Mar 27, 2026

Rating: 5/5

Great value for bulk

Bought the M6 size for machinery maintenance. Pricing is competitive compared to local hardware stores.

A

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect fit for my CNC project

Needed specific M5 extended-length screws for a custom build. These fit perfectly and the hex socket is well-formed without stripping.

A

Anonymous

Mar 15, 2026

Rating: 5/5

Exact specifications

Measured with calipers upon arrival. The thread pitch and diameter match the metric standards exactly. Very satisfied.

A

Anonymous

Feb 13, 2026

Rating: 5/5

High quality steel

No signs of rust after using them in a humid environment for three months. The 304 stainless steel quality is genuine.

5 FAQ

Q: What is the thread pitch for the M5 size?

A: The standard coarse thread pitch for M5 screws is 0.8mm unless specified otherwise as fine pitch.

Q: Do you sell matching nuts for these screws?

A: Yes, we carry matching 304 stainless steel hex nuts in our store. Please search for the corresponding metric size.

Q: Can I get an official invoice for this purchase?

A: Yes, an official invoice is provided with your shipment. You can also request a digital copy via customer service.

Q: Are these suitable for outdoor use?

A: 304 steel offers good corrosion resistance for most outdoor environments. For marine environments, 316 stainless steel is recommended.

Q: Is this material magnetic?

A: 304 stainless steel is generally non-magnetic or slightly magnetic depending on the manufacturing process. It is not strongly magnetic like iron.

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