How do you control your quality?

We request QC to inspect every production link for each batch of goods and provide MTC and mill certificates when the goods are finished.

ANSI/ASME B18.2.1 DIN480 Grade 8.8 Heavy Duty Square Head Machine Bolt

Name: ANSI/ASME B18.2.1 DIN480 Grade 8.8 Heavy Duty Square Head Machine Bolt
Brand: Ningbo Zhonglian Fastener Manufacture Co., Ltd.
SKU: 2150917915

Zhejiang, ChinaNingbo Zhonglian Fastener Manufacture Co., Ltd.

US$0.50

1,000-99,999 Pieces

US$0.30

100,000-999,999 Pieces

US$0.10

1,000,000+ Pieces

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Square Head

Model NO.

GB35

Connection

Common Bolt

Head Style

Square

Standard

BS7419

Grade

8.8

Application

Building

Finish

Black

MOQ

1000PCS

Certification

ISO9001

Delivery Time

25 Days

Durability

Enhanced

Sample

Free

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

High Strength Grade 8.8: Heavy duty square head machine bolt with Grade 8.8 strength for building applications.

Wide Size Range: Available in sizes from M12 to M64 to meet various structural requirements.

Multiple Material Options: Constructed from Carbon Steel (35#, 45#, 40CR, etc.) or Stainless Steel (SS304, SS316).

Various Finish Choices: Offers Black, Self-colour, H.D.G, YZP, and Darcromet finishes for corrosion protection.

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

ISO9001 Certified: Manufacturing process certified under ISO9001 standards for quality assurance.

Free Sample Availability: Free standard fastener samples provided for new customers (shipping cost applies).

Strict Quality Control: Every production link is inspected with MTC and mill certificates provided upon completion.

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 the 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, we suggest paying 100% in advance to reduce bank charges.

Q:Can you provide a sample?

For new customers, we provide free samples for standard fasteners, but clients pay express charges. For old customers, we send free samples and pay express charges ourselves.

Q:Are you a manufacturer or trading company?

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

Q:Are OEM/ODM services provided?

Yes, we accept OEM and ODM services.