Metric DIN 557 Regular Square Nuts

DIPTI METAL INDUSTRIES is a trusted manufacturer and global exporter of DIN 557 Square Nuts. Engineered to precision with wide surface area and high resistance to vibration, our square nuts are ideal for mechanical assemblies, structural frameworks, and heavy-duty applications.

What Are DIN 557 Square Nuts?

Metric DIN 557 Square Nuts are four-sided, internally threaded nuts offering a larger contact surface than hex nuts. This design ensures better grip, load distribution, and vibration resistance—especially when mounted against wooden or metal surfaces.

Key Features

• Square geometry for enhanced torque resistance
• Metric coarse threading
• Optional countersinks and beveled edges
• Compatible with carriage bolts and channel assemblies

Applications

• Structural steel and metal assemblies
• Machinery mounting and baseplates
• Wooden construction and furniture
• Scaffolding systems and handrails
• Automotive and heavy vehicles

Material Options

• Stainless Steel: A2 and A4 grades (corrosion resistant)
• Carbon Steel: Property classes 4.6 to 12.9 (quenched and tempered)
• Finishes: Zinc plated, hot-dip galvanized, black oxide, self-color

Size Range

Standard sizes available from M5 to M16. Custom dimensions available on request.

Mechanical Properties

Standards & Compliance

• Manufactured to DIN 557 standard
• Stainless options per DIN EN ISO 3506
• RoHS & REACH compliant finishes

Why Choose DIPTI METAL INDUSTRIES?

• ISO 9001:2015 certified manufacturing
• In-house quality testing & inspection
• Global exports to 25+ countries
• OEM customization available
• On-time delivery with secure packaging

Get in Touch

Looking for a reliable supplier of DIN 557 Square Nuts? Contact our technical sales team today for bulk inquiries, specifications, or product catalogs.

Frequently Asked Questions (FAQs)

1. Are you a manufacturer or a trading company?

We are a direct manufacturer of Metric DIN 557 Square Nuts, based in India. All products are made in-house with stringent quality control and tested to international standards.

2. Do you export DIN 557 Square Nuts internationally?

Yes. We regularly export to over 25 countries including the USA, UAE, Germany, UK, Canada, Australia, and many others across Europe, the Middle East, and Asia.

3. What materials do you offer for DIN 557 Square Nuts?

We manufacture square nuts in Stainless Steel (A2, A4), Carbon Steel, and Alloy Steel. Finish options include zinc plating, black oxide, hot-dip galvanizing, and custom coatings.

4. Can you supply DIN 557 nuts with custom specifications or packaging?

Absolutely. We offer OEM/ODM services, laser logo engraving, and customized export packaging, including barcoding, carton marking, and palletization.

5. Do you provide material test certificates (MTC)?

Yes, we provide EN 10204 3.1 MTCs along with test reports for tensile strength, hardness, chemical composition, and compliance certifications like ROHS and REACH upon request.

6. What is your minimum order quantity (MOQ)?

MOQ varies by size and grade, but we support both bulk export quantities and pilot sample orders for initial evaluation.

7. How long is your delivery lead time?

For stock sizes, dispatch is typically within 3–5 working days. For custom or large volume orders, lead time is 2–4 weeks depending on production load and destination country.

8. How do you handle quality assurance and inspection?

Each batch undergoes dimensional checks, mechanical property testing, and visual inspection before dispatch. Third-party inspection is available upon request (e.g., SGS, BV, TUV).

9. What are your payment terms for international buyers?

We accept T/T (bank transfer), L/C at sight, and select UPI methods for domestic clients. Flexible payment terms may be extended for regular buyers upon mutual agreement.

10. How can I request a quote or sample?

You can fill out the inquiry form on our contact page or email us directly at sales@diptimetal.com. Please include product size, material, quantity, and destination port for accurate pricing.