Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Screws
Origin	-
Material Grade	Grade 10.9 High-Strength Alloy Steel
Head Style	Round Cup Pan Head with Hex Socket
Drive Type	Internal Hex (Allen)
Available Sizes	M2, M3, M4, M5, M6, M8, M10, M12
Surface Finish	Black Oxide Coating
Thread Type	Metric Coarse Thread
Tensile Strength	Minimum 1040 MPa
Yield Strength	Minimum 940 MPa
Application	Machinery, Automotive, and Structural Assembly
Packaging	Bulk Box or Custom Retail Packs

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

True to spec

As a mechanical engineer, I verify my hardware. These meet the actual Grade 10.9 specifications. Hardness and tensile strength are spot on.

Anonymous

Mar 29, 2026

Rating: 4/5

Solid bolts, fast shipping

Very strong screws. I deducted one star only because the packaging was a bit loose, but the product itself is top-notch for the price.

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect for heavy-duty projects

These screws are exactly what I needed for my automotive repair. The Grade 10.9 rating gives me confidence they won't shear under pressure. The hex socket fits perfectly without stripping.

Anonymous

Mar 25, 2026

Rating: 5/5

Great quality control

Ordered a mix of M4 and M6 sizes. Every single screw had clean threads and a consistent black finish. No defects found in the batch of 200.

Anonymous

Mar 22, 2026

Rating: 5/5

Best value for money

Bought these for assembling a custom workbench. They hold incredibly tight and the round head looks much cleaner than standard hex heads.

Anonymous

Mar 09, 2026

Rating: 5/5

Reliable supplier

This is my third order. Consistency is key for my production line, and these screws deliver every time. Highly recommended for industrial use.

5 FAQ

Q: Do these screws come with matching Allen keys?

A: No, these screws are sold as hardware only. Allen keys must be purchased separately to ensure you have the correct size for your specific application.

Q: Can I return opened boxes if I ordered the wrong size?

A: Yes, unopened boxes can be returned within 30 days. For opened boxes, please contact our support team first as restocking fees may apply depending on the condition of the items.

Q: Is there a bulk discount for orders over 1000 units?

A: Absolutely! We offer tiered pricing for bulk orders. Please reach out to our sales department with your specific quantity requirements for a customized quote.

Q: What is the thread pitch for the M8 size?

A: The M8 screws feature a standard metric coarse thread pitch of 1.25mm unless otherwise specified in a custom order.

Q: Are these suitable for outdoor use without rusting?

A: While the black oxide coating offers some resistance to corrosion, these are not stainless steel. For prolonged outdoor exposure, we recommend applying an additional sealant or choosing our stainless steel variant.

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