Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Washers
Origin	-
Material	Carbon Steel
Surface Treatment	White Zinc Plated
Component Type	Nut with Integrated Spring and Flat Washer
Available Sizes	M2, M3, M4, M5, M6, M8, M10, M12, M16, M20, M24, M30, M36
Hardness Grade	Grade 8.8 / Class 8
Thread Standard	ISO Metric Coarse Thread
Washer Design	Thickened Flat Washer with Enlarged Spring Washer
Corrosion Resistance	Moderate (Suitable for indoor use)
Sales Unit	Sold by Weight (kg/lb)
Application	General Machinery, Automotive Assembly, Structural Fastening

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Perfect for automotive repairs

Used these M10 units on a suspension repair. The thickened flat washer provides great load distribution, and the spring washer keeps everything tight under vibration.

Anonymous

Mar 24, 2026

Rating: 5/5

Excellent quality for the price

Ordered 5kg of M8 nuts for a workshop project. The zinc plating is even, and the integrated washers save a ton of assembly time. Highly recommended for bulk jobs.

Anonymous

Mar 20, 2026

Rating: 3/5

Mixed sizes in the batch

I ordered specifically M5, but found a few M6 nuts mixed in the batch. It wasn't a huge issue for my usage, but quality control on sizing could be stricter.

Anonymous

Mar 04, 2026

Rating: 4/5

Solid construction

These are heavy-duty nuts. The combination of the spring and flat washer is very convenient. Just make sure you have the right torque wrench as they are quite strong.

Anonymous

Mar 04, 2026

Rating: 4/5

Good product, packaging could be better

The nuts themselves are solid carbon steel and fit perfectly. However, the bag arrived slightly torn, causing some minor spillage. The product quality makes up for it though.

Anonymous

Mar 04, 2026

Rating: 5/5

Fast shipping and great value

Buying by weight is much more economical than buying individual packs. The white zinc finish looks clean and professional. Will order again for our factory line.

5 FAQ

Q: Are these nuts suitable for outdoor applications?

A: While the white zinc plating offers some corrosion resistance, these are best suited for indoor or dry environments. For prolonged outdoor exposure, we recommend stainless steel alternatives.

Q: Do the washers stay attached during installation?

A: Yes, the spring washer and thickened flat washer are pre-assembled and seated securely within the nut design to prevent falling off during handling and initial threading.

Q: Is there a certificate of material compliance included?

A: For bulk orders over 50kg, a material test report (MTR) confirming the carbon steel grade and zinc plating thickness can be provided upon request at checkout.

Q: Can I order a specific count instead of by weight?

A: Currently, this specific SKU is only available sold by weight to ensure competitive pricing for bulk buyers. Please contact our sales team for custom count orders which may incur different rates.

Q: What is the thread pitch for the M36 size?

A: The M36 nuts feature a standard coarse thread pitch of 4.0mm, adhering to ISO metric standards unless otherwise specified in custom orders.

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