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.

DIN3570 Square U Type Bolt with Nuts

Name: Stainless Steel SS304/SS316/DIN3570 Square U Type Bolt with Nuts
Brand: Ningbo Zhonglian Fastener Manufacture Co., Ltd.
SKU: 2013045405

Zhejiang, ChinaNingbo Zhonglian Fastener Manufacture Co., Ltd.

US$0.01

1,000-99,999 Pieces

US$0.001

100,000-999,999 Pieces

US$0.0001

1,000,000+ Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel

Type

Ubolt

Model NO.

DIN3570

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI, GB

Grade

12.9

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Polishing

MOQ

1000PCS

Certification

ISO9001

Delivery Time

25 Days

Durability

Enhanced

Sample

Free

Transport Package

25kg/Carton+Pallet

Specification

5/8" to 1-1/4"

Trademark

FAST LZ

Origin

Ningbo, Zhejiang

HS Code

7318159001

Production Capacity

2500 Tons/Month

Key features

Wide Material Range: Available in Carbon Steel (SAE1008, 40Cr, etc.) and Stainless Steel (SS304/316).

Extensive Size Options: Covers Metric (M6-M100) and Imperial (1/4'-1-1/2') sizes for diverse applications.

Multiple Finish Choices: Options include Plain, ZP, HDG, Dacromet, Black Oxide, and Mechanical Galvanizing.

OEM/ODM Support: Accepts OEM and ODM services to meet specific customer requirements.

Strict Quality Control: QC inspects every production link; MTC and mill certificates provided upon request.

Free Sample Policy: Free standard fastener samples provided; express charges covered by client or supplier.

High Grade Strength: Available in grades Gr4 to Gr12 and Class2 to Class8 for heavy-duty applications.

Established Manufacturer: Factory established in 1997 with 10,000 sqm plant area and ISO9001 certification.

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: ≤5.44h 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 every product'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 less than 1000USD, 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.