Are you a manufacturer or trading company?

sinofastener is a manufactured of fasteners factory have many years of Bolts, Nuts, Threaded Rods and Washers experience in Ningbo, China

How about your price.

High quality products with reasonable price. Please give me a inquire, sinofastener quoted you a price for you refer at once.

How do you control your quality.

We request QC inspect every productions links for each bacth goods. And we can provide you MTC and mill certificate when the goods is finished.

Square Welding Nut - Fasteners for Mechanical Assembly

Name: Square Welding Nut - Fasteners for Mechanical Assembly
Brand: Ningbo Zhonglian Fastener Manufacture Co., Ltd.
SKU: 2159508895

Zhejiang, ChinaNingbo Zhonglian Fastener Manufacture Co., Ltd.

US$0.05

1,000-9,999 Pieces

US$0.03

10,000-99,999 Pieces

US$0.01

100,000+ Pieces

Product profile

Customization

Available

Material

High Strength Steel

Type

Hexagon Head

Model NO.

Square Welded Nut

Connection

Common Bolt

Head Style

Hexagonal

Standard

ASTM

Grade

Gr5/8/2, A325, A490

MOQ

1000PCS

Certification

ISO9001

Delivery Time

25 Days

Durability

Enhanced

Sample

Free

Transport Package

25kg/Carton+Pallet

Specification

M3-M64, 5mm-600mm

Trademark

FAST

Origin

Ningbo, Zhejiang

HS Code

7318151001

Production Capacity

2500 Tons/Month

Key features

High Strength Steel Material: Made from carbon steel, alloy steel, and stainless steel (SS201, SS304, SS316) for durability.

Multiple Standard Grades: Available in DIN, SAE, and ASTM grades including Gr.4-8.8, Gr.2,5,8, A563, A325, and A490.

Extensive Surface Finishing: Options include Zinc (Yellow, White, Black), HDG, Black Oxide, Geomet, Dacroment, and Nickel plating.

OEM/ODM Customization: Accepts OEM and ODM services with customized fastener production via CNC and forging.

ISO9001 Certified Quality: Manufactured under ISO9001 certification with strict QC inspection at every production link.

Free Sample for New Clients: Provides free standard fastener samples for new customers, with client covering express charges.

Wide Size Range: Production capabilities cover sizes from M2 to M100 using cold forging, hot forging, and machining.

Flexible Payment Terms: Accepts 30% T/T advance with 70% balance on B/L copy, or 100% advance for small orders.

Company profile

Ningbo Zhonglian Fastener Manufacture Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedNearest Port: Ningbo Port, Shanghai portAverage Response Time: ≤7.24h CertifiedTerms of Payment: LC, T/T, D/P CertifiedInternational Commercial Terms(Incoterms): FOB, CIF, CFR

AI-Powered supplier vetting

SummaryNingbo Zhonglian Fastener Manufacture Co., Ltd. is identified as a Chinese limited company operating in Zhejiang and producing construction fasteners, including bolts, nuts, screws, washers, and non-standard fasteners. The supplied information shows ISO9001:2015 certification and also references ISO14001, ISOEN14399CE, and ISOEN15048 approvals. Reported manufacturing resources include automatic cold-forging equipment, hot-forging lines, heat-treatment lines, and an inspection center. The company states that it serves international markets and maintains overseas service institutions, but the evidence does not fully establish current service performance. Production information is inconsistent across the slices regarding establishment date, employee count, plant area, and capacity, so scale should be verified. Customization capability is not explicitly demonstrated. Trade records identify buyers in the United Kingdom and Vietnam, but the number of documented transactions is limited.

Supplier typeThe supplier is classified as a combined business entity and limited company in China, with a stated manufacturing address in Zhejiang. Its products, manufacturing equipment, and description identify it as a fastener manufacturer rather than only a trading intermediary.

CertificationsThe supplier explicitly provides an ISO9001:2015 certificate. Its company description also references ISO9001, ISO14001, ISOEN14399CE, and ISOEN15048 approvals, indicating multiple quality, environmental, and product-related certifications or approvals.

After-Sales capabilityThe supplier states that it provides considerate service and has six domestic direct-sale offices plus overseas regional service institutions in Hungary, Dubai, Malaysia, and the UK. These statements support a service network, although no specific after-sales procedures, response standards, or performance evidence are provided.

Production capacityThe supplier reports nearly 100 automatic cold-forging machines, six hot-forging lines, four imported automatic mesh-belt heat-treatment lines, a professional inspection center, and monthly capacity of up to 2,500 tons. It also lists a broad range of fastener products and international standards, providing explicit evidence of substantial manufacturing capability.

Client casesTrade records associate the supplier with CYNTECH ANCHORS LTD in the UK and CÔNG TY TNHH CST INDUSTRIES VIỆT NAM in Vietnam, covering hex screws, hex nuts, and stainless-steel flat washers. These records demonstrate identifiable international buyer activity, but only a small number of transactions are shown.

Product Q&A

Q:What is your main products?

Our main products are fasteners: bolts, screws, rods, nuts, washers, anchors and rivets. Meantime,our company also produces stamping parts and machined parts.

Q:How to ensure that every process's quality

Every process will be checked by our quality inspection department which insures everyproduct's quality. In the production of products, we will personally go to the factory to check the quality of products.

Q:How long is your delivery time?

Our delivery time is generally 30 to 45 days. Or according to the quantity.

Q:What is your payment method?

30% value of T/T in advance and other 70% balance on B/L copy. For small order lessthan1000USD, would suggest you pay 100% in advance to reduce the bank charges.

Q:Can you provide a sample?

For new customer, sinofastener can provide free samples for standard fastener, But the clients will pay the express charges. For old customer, We will send you free samples and pay express charges by ourself.