What grades of bolts are available?

We offer a wide range of grades including 4.6, 4.8, 5.6, 5.8, 8.8, 10.9, and 12.9.

What standards do your products comply with?

Our products comply with DIN, ANSI, GB, JIS, BSW, GOST, ASTM, and ISO standards.

What is your annual production capacity?

We have a production ability of over 200,000 tons of high tensile fasteners per year.

High Quality DIN7991 Grade 4.8 Carbon Steel Black Countersunk Socket Hex Bolt

Name: High Quality DIN7991 Grade 4.8 Carbon Steel Black Countersunk Socket Hex Bolt
Brand: HANDAN TECH-MI METAL PRODUCT CO.,LTD
SKU: 2139497252

Hebei, ChinaHANDAN TECH-MI METAL PRODUCT CO.,LTD

US$0.01

100 Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

M6-52

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

4.8

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Black

Transport Package

Cartons or Bags

Specification

M6-52

Trademark

Origin

China

HS Code

7318159001

Production Capacity

200ton/Day

Key features

OEM/ODM Customization: Full customization available from samples or designs with flexible options.

Wide Grade Range: Available in grades 4.6, 4.8, 5.6, 5.8, 8.8, 10.9, and 12.9.

Fast Sample Delivery: Free samples available for standard fasteners upon request.

High Production Capacity: Annual output exceeds 200,000 tons of high tensile fasteners.

Multiple Standards: Complies with DIN, ANSI, GB, JIS, BSW, GOST, ASTM, and ISO standards.

Customized Lead Time: Standard lead time ranges from 15 to 30 days after confirmation.

Flexible Payment Terms: Accepts T/T, L/C, D/P, and PayPal for secure transactions.

Advanced Manufacturing: Equipped with cold heading, hot forging, and CNC machining capabilities.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceSelf-branded

HANDAN TECH-MI METAL PRODUCT CO.,LTD

Hebei, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 2 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤5.07h

AI-Powered supplier vetting

SummaryHandan Yanzhao Fastener Manufactory Co., Ltd. is a combined fastener manufacturer in Handan, China, operating a 40,000-square-meter facility with more than 100 employees and over 100 production machines. It reports high-strength fastener R&D and production, multiple manufacturing processes, five quality inspectors, standardized finished-product inspection instructions, and inventory capability. The supplier offers broad customization and ODM/OEM services, including OEM for recognized brands and SDK availability, but reports no new products in the past year. Service limitations include no valid manufacturing-capacity contract with associated subcontractors, no overseas warehouse, showroom, agent, or branch, no overseas-service countries, and no participation in offline trade shows. Lead times are stated as within 15 working days in both peak and off-season. Financial records are identified for 2021–2023, but no financial results are provided. No certification evidence, customer case details, or formal...

Supplier typeThe supplier is identified as Handan Yanzhao Fastener Manufactory Co., Ltd., a combined company specializing in R&D and production of high-strength fasteners. Its stated facility size, workforce, equipment base, and manufacturing scope support classification as a manufacturer rather than only a trading intermediary.

After-Sales capabilityThe supplier reports inventory capability, accepts several service quotation and payment terms, and states a service location near Tianjin Port. However, it has no overseas warehouse, showroom, agent, branch, or overseas-service country coverage, and has no written service-capability assessment procedures or approved supplier list, indicating limited documented overseas after-sales infrastructure.

Production capacityThe supplier reports a 40,000-square-meter site, more than 100 employees, over 100 advanced production machines, shot blasting, wire drawing, molding, heat treatment, and stud production facilities, inventory capability, five quality inspectors, and lead times within 15 working days in both seasons. These stated resources and performance indicators support substantial production capacity, although the lack of a valid contract with associated subcontractors is a control weakness.

Customization capabilityBoth R&D and design-capability records explicitly list customization from samples, designs, full customization, minor customization, and flexible customization. The supplier also reports ODM availability, providing direct evidence of broad customization support.