Do you provide custom specifications?

Yes, we can produce specialty fasteners based on unique customer specifications and drawings.

What is the maximum size available?

We supply sizes ranging from M24 up to M100 with various thread tolerances.

Are samples available for surface treatment verification?

Yes, samples with surface treatments like Black Oxide are available upon request.

Black M30 Class8 High Strength Nuts Heavy Nuts DIN 555 HDG Nut

Name: Black M30 Class8 High Strength Nuts Heavy Nuts DIN 555 HDG Nut
Brand: Jinjiang Tagong Hardware Forging Manufacturer Co. Ltd.
SKU: 1982483825

Fujian, ChinaJinjiang Tagong Hardware Forging Manufacturer Co. Ltd.

US$0.005

30,000-49,999 Pieces

US$0.003

50,000-99,999 Pieces

US$0.001

100,000+ Pieces

Sample price:US$50.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

DIN555 - M30 - Cl. 8 - Black

Connection

Common Bolt

Head Style

Hexagonal

Standard

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

Grade

8.8

Material Name

C45/ 40cr/35CrMo/42CrMo

Property Class

Class8/ 10/12

Thread Tolerance

6h /6g

Surface

Black Oxide/Zinc/HDG

Transport Package

Pallet+Carton

Specification

25kg/carton

Trademark

as requested by buyer

Origin

China

HS Code

73181600

Production Capacity

1500tons/Month

Key features

High Strength Class 8: Manufactured with Grade 8.8 carbon steel for superior load-bearing capacity.

Customizable Material: Available in C45, 40Cr, 35CrMo, and 42CrMo based on specific requirements.

Diverse Surface Options: Offers Plain+oil, Zinc Plated, Black Oxide, Phosphate, Dacromet, and Geomet finishes.

Wide Standard Compliance: Meets DIN, ANSI, GB, JIS, GOST, BSW, and ISO Uni standards.

Extensive Size Range: Available from M24 up to M100 with precise dimensional tolerances.

35 Years Experience: Established in 1985 with over 35 years of manufacturing expertise.

ISO Certified Quality: Certified with ISO9001/2015, GB/T19001-2016, and SGS test reports.

Integrated Hot Forging: Features an integrated hot forging process with advanced inspection equipment.

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: ≤3.90hTerms 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.