Are you a manufacturer or trading company?

Sinofastener is a manufacturer with many years of experience in bolts, nuts, threaded rods, and washers, located in Ningbo, China.

Do you offer OEM/ODM services?

Yes, we accept OEM and ODM services to meet specific customer requirements.

How is your pricing structured?

We offer high-quality products at reasonable prices. Please send an inquiry, and we will quote you a price immediately for your reference.

ASTM A325 A490 Steel Structural Hex Bolts with Assembling Nuts Washers

Name: ASTM A325 A490 Steel Structural Hex Bolts with Assembling Nuts Washers
Brand: Ningbo Zhonglian Fastener Manufacture Co., Ltd.
SKU: 2057496985

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

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel, Alloy Steel

Type

Hexagon Head

Model NO.

Bolt

Connection

Common Bolt

Head Style

Hexagonal

Standard

ASTM

Grade

A325-1,A325m-1,A490-1,A490m-1

Application

Building

Finish

Hot Galvanizing

Certification

Is09001

Delivery Time

25days

MOQ

800kgs

Sample

Free

Durability

Enhanced

Transport Package

25kg/Carton+Pallet

Specification

M12-M36, 1/2"-1-1/2"

Trademark

FAST

Origin

Ningbo, Zhejiang

HS Code

7318151001

Production Capacity

2500 Tons/Month

Key features

ASTM Certified Grades: Complies with ASTM A325/A490 standards for structural steel connections.

Wide Size Range: Available in sizes M12-M36 and 1/2'-1-1/2' for diverse applications.

Multiple Finish Options: Offers Black, Self-colour, H.D.G, YZP, Darcromet, and Galvanized finishes.

OEM/ODM Support: Accepts OEM and ODM services for customized fastener solutions.

Free Sample Policy: Provides free standard samples for new customers (buyer pays shipping).

Quality Assurance: Strict QC inspection at every production link with MTC and mill certificates.

Established Manufacturer: Factory established in 1997 with 10,000 sqm plant area and 31 employees.

Flexible Payment Terms: Accepts T/T, LC, D/P with options for 30% advance or 100% 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: ≤6.99h 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 product range?

Our main products are fasteners including bolts, screws, rods, nuts, washers, anchors, and rivets. We also produce stamping and machined parts.

Q:How do you ensure product quality?

Every process is checked by our quality inspection department. We personally visit the factory to check quality and request QC inspection for every production link, providing MTC and mill certificates upon completion.

Q:What is the delivery time?

Our general delivery time is 30 to 45 days, or according to the quantity ordered.

Q:What are your payment methods?

We accept 30% T/T in advance and 70% balance on B/L copy. For small orders under 1000 USD, we suggest 100% payment in advance to reduce bank charges.

Q:Can you provide free samples?

For new customers, we provide free standard fastener samples, but the client pays express charges. For old customers, we send free samples and cover the express charges.