Metric Standards |
Commonly seen ones include M3, M4, M5, M6, M8, M10, M12, M16, M20, M24, etc. |
Thread Specifications |
Such as 1/4 - 20, 5/16 - 18, 3/8 - 16, 7/16 - 14, 1/2 - 13, 9/16 - 12, 5/8 - 11, 3/4 - 10, 7/8 - 9, 1 - 8, etc. |
Thickness Specifications |
The thickness of nuts with different thread specifications also varies. For example, the thickness of an M3 hexagon nut is about 2.4mm, and that of an M4 is about 3.2mm. |
High-Strength Specifications |
According to performance grades, hexagon nuts can be classified into grades 4.8, 8.8, 10.9, 12.9, etc. |
Fine Thread Specifications (Metric) |
On the basis of the metric standard, there are also fine thread hexagon nuts, such as M10×1.25 (different from the 1.5mm pitch of the standard M10), M12×1.25 (compared with the 1.75mm pitch of the standard M12), etc. |


Our Services:
Professional Manufacturer: At Bolnut Fastener Co., Ltd, every fastener we produce is a testament to precision and expertise, crafted meticulously to align with the bespoke specifications and performance criteria set by our esteemed clients.
Quality Assurance: Our fasteners undergo stringent durability testing and are engineered with critical technical designs that dramatically extend their longevity, ensuring you receive products that stand the test of time and surpass industry standards.
Cost-Effective Solutions: We provide pricing that is not only competitive but also reflects our commitment to high-quality production, facilitated by our advanced factory capabilities, ensuring you receive exceptional value for your investment.
Comprehensive Fastening Solutions: With a rich heritage of over 10 years in the industry, we proudly offer an extensive selection of parts, designed to precisely address and fulfill your unique fastening requirements.
Customized Ideal Fasteners: Our bespoke services are tailored to your needs, based on the specific samples and drawings you provide, ensuring a perfect match to your application demands.



1. Q: Please send the catalog.
A: If you require a catalog, please provide your email address, and we will send it within two working hours.
2. Q: Can I obtain some samples?
A: Yes, we believe that sample orders are an excellent way to initiate cooperation. All our samples are free of charge; however, we only ship weights under 1 kg. For existing customers, we offer free samples and cover the express charges.
3. Q: Can you send a price list?
A: Certainly. Please provide your email address, and we will send the price list within two working hours.
4. Q: Could you accept my own logo or design on the goods?
A: Yes, we can accommodate custom logos or designs on the products without issue.
5. Q: What is the delivery time?
A: Generally, if the goods are in stock, we can deliver them within 2-5 days. For quantities ranging from 1-2 containers, the delivery period is approximately 18-25 days. If the order exceeds two containers and requires expedited production, we can prioritize your order at the factory.
6. Q: What is your payment method?
A: Our standard payment terms are 30% T/T as a deposit and the remaining 70% before shipping. We also accept L/C and D/P. For more detailed information, we can discuss via email.
7. Q: What is your packaging?
A: Our standard packaging is 20-25 kg per carton, with 36 or 48 cartons per pallet. Each pallet weighs approximately 900-960 kg. We can also print customer logos on the cartons or customize packaging according to specific requirements.
8. Q: Do you accept custom designs on products or boxes?
A: Yes, we accept customized designs for both products and packaging. We have a professional design team capable of creating products based on your specifications.
9. Q: Can I trust you?
A: Absolutely. We are verified suppliers on "Made-in-China" and undergo a rigorous certification process to ensure we are a legitimate manufacturer.
10. Q: May I visit your factory?
A: Of course. We welcome visits to our factory at any time. Before your arrival, please contact us to inform us of your schedule so we can arrange transportation from the airport or train station.