2. High quality with competitive price for sale.
3. Delivery: within 7-15 days or according to quantity
4. Approved by ISO9001, SGS every year
5. Flexible MOQ – 100 pcs trial, volume discounts for bulk.
→Product Introduction
A nut is a threaded fastener with internal threads, used in conjunction with a mating bolt to secure assembled components.
Its hexagonal shape allows easy tightening with standard tools.
Carbon steel nuts provide reliable clamping force, high strength, and cost-effectiveness for industrial and construction applications.
Available Sizes & Dimensions
Mechanical Properties
Thread Specifications
FAQ
FAQ
Q: What are the main products you can supply?
A: We are the professional and famous factory in China for steel pipe and fittings, such as flanges, elbows, bolts and nuts, etc.
Q: What is your minimum order quantity (MOQ)?
A: For trial orders, our MOQ is100 pcs per size. For bulk orders, MOQ is flexible — please contact us with your quantity for a competitive quote. Volume discounts are available for large orders.
Q: How long is the delivery time?
A: 7-15 days for standard sizes in stock after payment confirmation. For custom orders, delivery time is typically 20-30 days, depending on quantity and specifications. We will confirm the exact timeline upon order confirmation.
Q: How do you control quality?
A: We implement 3-stage quality control:
- Raw material– chemical composition tested by spectrometer
- Production– dimensional checks during manufacturing
- Final– 100% thread gauging (Go/No-Go), hardness testing, and proof load testing per ISO 898-2
A Mill Test Certificate (EN 10204 Type 3.1)is provided with every shipment.
Q: Can I get samples before ordering?
A: Yes. Stock samples are free of charge, you only pay the shipping cost. Custom samples require a small production fee, which will be deducted from your first bulk order.
Q: Do you accept OEM or custom orders?
A: Yes, we accept custom orders based on your drawings, specifications, or samples. We can also print your logo on products and packaging. Our engineering team provides a solution within 24 hours.
Q: Which standards do your products comply with?
A: Our carbon steel nuts are manufactured per:
ISO 898-2 – Mechanical properties
DIN 934 / ISO 4032 – Dimensions (metric)
ASME B18.2.2 – Dimensions (inch)
ASTM A563 – Carbon steel nut specification (US market)
Our factory is ISO9001 certified and SGS audited annually.
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