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Home / Screws / 304 Stainless Steel Screw M3 Round Head Bolt, Cross Pan Head Screw M3*4 to M3*22, National Standard Fastener

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material 304 Stainless Steel
Head Type Round Pan Head
Drive Type Cross (Phillips)
Thread Size M3
Length Range 4mm to 22mm
Standard National Standard (GB)
Surface Finish Polished
Thread Pitch 0.5mm (Coarse)
Application Electronics, Machinery, DIY Projects
Corrosion Resistance High (Rust Resistant)

6 reviews

A

Anonymous

Mar 31, 2026

Rating: 5/5

Exactly as described

National standard sizing fits my imported equipment perfectly. Very happy with the purchase and will buy again when I run out.

A

Anonymous

Mar 29, 2026

Rating: 4/5

Good value, fast shipping

Great set of screws for the price. The heads are well-formed and the cross drive works smoothly with my screwdriver. One length was slightly off, but overall satisfied.

A

Anonymous

Mar 18, 2026

Rating: 5/5

High quality 304 steel

I tested these with a magnet and they show very low attraction, confirming genuine 304 stainless steel. No rust after a month in a humid environment.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Essential for hobbyists

Having a variety of lengths from 4mm to 22mm in one pack is incredibly convenient. The threads are clean and consistent across all sizes.

A

Anonymous

Mar 11, 2026

Rating: 4/5

Solid fasteners

Used these to assemble a custom keyboard case. They held up well under torque and didn't snap. The pan head sits flush nicely.

A

Anonymous

Mar 05, 2026

Rating: 5/5

Perfect for my electronics project

These M3 screws are exactly what I needed. The stainless steel quality is excellent, and they fit perfectly without stripping. Highly recommended for precision work.

5 FAQ

Q: Can these be used in outdoor applications?

A: Yes, 304 stainless steel offers good corrosion resistance for most outdoor environments, though 316 grade is recommended for marine or highly saline conditions.

Q: Is the head diameter standard for M3 pan heads?

A: Yes, the head diameter follows the national standard for M3 pan heads, ensuring compatibility with standard washers and countersinks.

Q: What is the hardness rating of these screws?

A: These 304 stainless steel screws typically have a hardness of approximately 70-80 HRB, suitable for general mechanical assembly.

Q: Are these screws compatible with metric M3 nuts?

A: Yes, these are standard metric M3 screws with a 0.5mm pitch, fully compatible with any standard M3 nut.

Q: Do you sell these in bulk quantities over 1000 pieces?

A: Yes, we offer bulk discounts for orders over 1000 pieces. Please contact our sales team via the 'Contact Seller' button for a quote.

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