What is the lead time for orders?

Standard sizes are in stock with a lead time of 15-30 working days. Non-standard sizes depend on quantity.

What certifications does the product have?

The product is certified with ISO9001:2008, SGS, and ROHS.

Black Oxide Alloy Steel DIN7991 Hex Socket Flat Countersunk Head Cap Screw

Name: Black Oxide Alloy Steel DIN7991 Hex Socket Flat Countersunk Head Cap Screw
Brand: Dongguan VG Fasteners Co., Ltd.
SKU: 1988732645

Guangdong, ChinaDongguan VG Fasteners Co., Ltd.

US$0.01

30,000 Pieces

Sample price:US$0.03/piece.Request sample

Product profile

Customization

Available

Material

Alloy Steel

Type

Screw

Model NO.

DIN7991

Groove

Hexagon

Connection

Common Bolt

Head Style

Round

Standard

DIN, GB, BSW

Grade

10.9, 12.9

Standard-

DIN7991

Finish

Black Oxide

Delivery Time

15 Days

in Stock

Yes

Transport Package

Neutral Packing

Specification

M3-M20

Trademark

Origin

China

HS Code

731815

Production Capacity

10 Million/Month

Key features

14+ Years Experience: Over 14 years of expertise in the fastener industry ensuring professional service.

ISO 9001 Certified: Certified facilities with strict in-house QC and detailed order-specific test reports.

High Monthly Capacity: Production capacity of over 500 tons for anchor bolts and 1000 tons for socket screws.

OEM/ODM Service: Custom manufacturing services available to meet specific customer requirements.

Free Sample Service: Free samples provided within 7 days upon confirmation of acceptable pricing.

Wide Material Options: Available in Alloy Steel and Stainless Steel (SS304, SS316) with various grades.

Multiple Surface Treatments: Options include Black Oxide, Zinc Plated, and Hot Dipped Galvanized finishes.

Comprehensive Product Range: Extensive range including anchors, bolts, screws, and hand tools for various industries.

Company profile

High Repeat Buyers ChoiceExhibition Experience

Dongguan VG Fasteners Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableAverage Response Time: ≤1.93h

AI-Powered supplier vetting

SummaryDongguan VG Fasteners Co., Ltd. is identified as both a trading company and manufacturer/factory in China, offering anchors, screws, nuts, thread rods, and related fasteners. It reports ISO 9001 and ISO 14000 management-system certifications, professional R&D capability, 3D software design, and multiple customization modes. Stated production capacity includes 12,000 tons of socket screw items and 6,000 tons of anchor bolts annually. The supplier has self-operated import/export rights and reports that 90% of total sales come from exports. However, SDK availability is explicitly absent, while after-sales capability, customer cases, raw-material traceability, and several sustainability controls are not evidenced. Financial information is represented only by years rather than performance metrics, so financial credibility cannot be assessed from the provided data. The SGS audit record is dated April 24, 2024 to April 23, 2025, with an evaluation result of 0; the meaning of that result is not defined in the...

Supplier typeThe supplier is described as a Limited Company and as both a Trading Company and Manufacturer/Factory. Its stated scope covers fastener sales, hardware, metal products, mechanical parts, tools, plastics, molds, and related goods, indicating a combined trading and manufacturing business model.

CertificationsThe supplier reports holding ISO 9001 and ISO 14000 management-system certifications. These certifications provide explicit evidence of formal quality and environmental management systems, although no certificate numbers, issuing bodies, or validity dates are provided.

R&D capabilityThe supplier is explicitly identified as a professional technical supplier, reports 3D software design services, and has 6–10 years of total R&D engineer experience. However, it reports no available SDK, limiting evidence of software-development integration capability.

Production capacityThe supplier reports annual productivity of 12,000 tons for socket screw items and 6,000 tons for anchor bolts, and also identifies itself as a manufacturer/factory. These stated capacities support a positive assessment of production capability, although broader capacity utilization and facility details are not provided.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. This is direct evidence of broad customization coverage for its offered products.

Product Q&A

Q:How can I get a quotation?

Kindly provide us your details request (item No, style, logo, size, material, surface treatment, quantity etc.) the more detailed the better, leave us an inquiry or email to us and we will response promptly!

Q:How to get a free sample?

We recommend you work with T/T, PayPal, Western Union.. are all available.

Q:When can I expect the customized product to be finished?

Sample:7-10 working days (Standard). Bulk order:15-30 working days(Standard). If you have any other questions, please feel free to contact us!

Q:What materials are available for this screw?

We offer Alloy Steel (Grade 8.8, 10.9, 12.9) and Stainless Steel (SS304, SS316).

Q:What surface treatments are offered?

Available finishes include Plain (Black oxide), Zinc Plated (White/Yellow), and H.D.G.