Do you accept non-standard orders?

Yes, we accept non-standard requirements and offer full customization from samples and designs.

What payment terms do you accept?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

What is the minimum order quantity?

The minimum order quantity is 500kg.

Class 8.8 Coarsethread Flange Screw Black Oxide for Auto Parts

Name: Class 8.8 Coarsethread Flange Screw Black Oxide for Auto Parts
Brand: Zhejiang Ruizhao Technology Co., Ltd.
SKU: 733520102

Zhejiang, ChinaZhejiang Ruizhao Technology Co., Ltd.

US$0.01-0.20

1,000 Pieces

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head With Flange

Model NO.

SL16dd2

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, ANSI, GB, JIS, BSW, Accept Non-Standard

Grade

8.8/10.9/12.9/5/8/9

Application

Machinery, Chemical Industry, Environmental, Building, Automotive Industry

Finish

Color-Zinc Plated

Thread

Metric or Inch

Thread Type

Fine / Coarse /Bsw/Bsf/ Unc/Unf

8.8 Hardness

HRC 22-32

8.8 Tensile Strength

Above 800 MPa

8.8 Yield Strength

Above 640 MPa

10.9 Hardness

HRC 33-38

10.9 Tensile Strength

Above 1040 MPa

10.9 Yield Strength

Above 940 MPa

12.9 Hardness

HRC 39-45

12.9 Tensile Strength

Above 1200MPa

Transport Package

Carton Packing + Pallets

Specification

M6 to M20

Trademark

Origin

Wenzhou China

HS Code

731518

Production Capacity

600tons / Month

Key features

Comprehensive Customization: Offers full customization from samples and designs, including metric or inch threads and various thread types.

Wide Grade Range: Available in grades 8.8, 10.9, 12.9, 5, 8, and 9 to meet diverse strength requirements.

Advanced Manufacturing: Equipped with fully automatic machines, CNC lathes, and optical sorting for high efficiency and precision.

Strict Quality Control: 100% visual inspection of finished products with traceability for raw materials.

Multiple Surface Finishes: Options include Black Oxide, Color Zinc, Dacromet, HDG, Zinc Nickel, and Cr3+.

Global Standard Compliance: Meets DIN, ISO, JIS, ANSI, ASME, ASTM, and GB standards with non-standard options available.

Fast Delivery: Standard lead time is 30 working days for a 20' container, with flexible options for peak and off-peak seasons.

Certified Manufacturer: ISO 9001 and ISO/TS 16949 certified with PPAP Level 3 and TS16949 certificates.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceSelf-brandedPatents Awarded

Zhejiang Ruizhao Technology Co., Ltd.

Zhejiang, 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: 7 Years CertifiedNearest Port: Ningbo Port, ShanghaiPortAverage Response Time: ≤8.22h

AI-Powered supplier vetting

SummaryThe supplier is identified as a Wenzhou-based trading company engaged in wholesale, automotive-related sales, and import/export activities. It demonstrates broad customization and ODM capability, reports new products in the past year, and provides OEM services for recognized brands. Quality-related procedures include documented inspection, traceability, complaint handling, and quality assurance. However, it has no available SDK, overseas warehouse, showroom, agent, or branch, and no Fortune 500 cooperation is reported. Production ownership and detailed financial credibility remain insufficiently evidenced.

CertificationsThe supplier reports ISO 14001 and ISO 45001:2018 certificates, along with other management-system certification information. The slices do not provide certificate numbers, validity dates, scopes, or independent verification, so the breadth and current status of certification cannot be fully assessed.

After-Sales capabilityThe supplier has documented and followed procedures for handling customer complaints and corrective/preventive actions, plus stated quality assurance and traceability controls. However, it has no overseas warehouse, showroom, agent, or branch, which limits evidence of localized overseas after-sales support.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and holds one national science and technology progress award. It has no internationally recognized design awards and no available SDK, but these limitations do not negate the stated product-development evidence.

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

Client casesThe supplier reports OEM service for recognized brands and an 80%–100% repeat-buyer preference range. It reports no cooperation with Fortune 500 companies, and no specific customer names, project descriptions, or verifiable case studies are provided.

Product Q&A

Q:Are you a factory or trading company?

We are a Manufacturer who got import export certificate

Q:Why choose us?

We had advanced fully automatic equipment to improve the production efficiency and offer good delivery time and best price,With ISO 9001 and ISO/TS 16949 certified. From material selection to parts production, we conform to the strictest quality requirements.

Q:What is your main products?

Hex Flange Bolts, Sems Screws,Hex Bolts, Rivets, Stud Bolts , Non standard Bolts, High Tensile Bolts, Auto Components, Custom CNC Parts.

Q:What is the lead time for an order?

The lead time is 30 working days for a 20' container.

Q:What are the available thread types?

We offer Metric Thread or Inch Thread, including Fine, Coarse, Bsw, Bsf, Unc, and Unf options.