Do you provide certifications?

Yes, our products have passed ISO9001/2015, GB/T19001-2016, and SGS certification testing.

What is the thread tolerance?

The thread size tolerance is specified as 6H.

Which ports do you ship from?

Our nearest ports for export are Xiamen, Ningbo, and Shenzhen.

Black Oxide Class8 M48 Coupling Nuts DIN934 Hex Nuts Fasteners Factory

Name: Black Oxide Class8 M48 Coupling Nuts DIN934 Hex Nuts Fasteners Factory
Brand: Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd.
SKU: 1979425085

Fujian, ChinaJinjiang Tagong Hardware Forging Manufacturer Co. Ltd.

US$1.101

10,000-29,999 Pieces

US$1.097

30,000-49,999 Pieces

US$1.093

50,000+ Pieces

Sample price:US$5.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

DIN934- M48 -Black-Cl. 8

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, GOST, BSW, ISO Uni

Grade

8.8

Material Name

Steel 45

Property Class

Class 8

Surface Treatment

Black Oxide

Products Usages

Auto Parts/Wheel/Wind Power Equipments/Truck

Transport Package

Pallet+Carton

Specification

25kg/carton

Trademark

as requested by buyer

Origin

China

HS Code

73181600

Production Capacity

2000000PCS/Month

Key features

Class 8 Strength: High-grade 8.8 strength fasteners made from Steel 45 for heavy-duty applications.

Black Oxide Finish: Surface treated with black oxide for enhanced corrosion resistance and durability.

DIN934 Standard: Manufactured to DIN934 specifications for M48 thread size with 6H tolerance.

Custom Manufacturing: Capable of producing special fasteners based on unique customer specifications and drawings.

ISO9001 Certified: Factory certified with ISO9001/2015, GB/T19001-2016, and SGS testing standards.

38 Years Experience: Over three decades of manufacturing expertise established since 1985.

Flexible Packaging: Standard 25kg/carton or 1.5-2.5 tons/pallet, customizable per buyer request.

Global Export: Products exported to Europe, North America, Australia, and other global markets.

Company profile

In-stock CapacityQuality AssuranceManagement CertificationPrivate Mold

Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd.

Fujian, China

Business Type: Manufacturer/FactoryExport Year: 2021-11-10Nearest Port: Xiamen, Ningbo, ShenzhenAverage Response Time: ≤4.61hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, EXW, CIF

AI-Powered supplier vetting

SummaryJinjiang Tagong Hardware Forging Manufacturer Co. Ltd. is identified as a Chinese manufacturer/factory producing a broad range of fasteners and related hardware. The supplier reports multiple customization options, ODM services, new product development within the past year, OEM service for well-known brands, six production lines, and overseas warehouse and showroom capabilities. Export activity has lasted three years, with 31%–40% of sales from exports. Service lead time is reported as within 15 working days in both peak and off-season periods. However, the available evidence shows no SDK, no overseas agents or branches, no continuous quantity reconciliation for production batches, and several procedures without written records. Financial information is limited to stated years rather than performance figures, and the audit result is recorded as 0 without an explained evaluation interpretation. Customer cases are not specifically identified.

Supplier typeThe supplier is explicitly identified as a manufacturer/factory and limited company based in Fujian, China, with fasteners and related hardware as its primary product range. Its offering profile covers manufacturing, export, service, quality control, R&D, and sustainability information.

R&D capabilityThe supplier reports that it developed new products during the past year and provides ODM services, supporting active product-development capability. It also reports no available SDK, which limits the evidence for software or SDK-based development but does not negate the stated hardware R&D capability.

Production capacityThe supplier is a manufacturer/factory with six production lines and a broad fastener and hardware product portfolio. However, it does not continuously reconcile quantities for each batch or mass-production run, indicating a documented production-control weakness.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM capability, providing direct evidence of broad customization support.