What surface treatments are available?

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

What is the minimum order quantity (MOQ)?

Specific MOQ details are not listed, but we support both standard and custom OEM/ODM orders with flexible packaging.

What are the payment terms?

We accept FOB, CIF, CFR, L/C, T/T, PayPal, and Western Union.

DIN 7991 Socket Allen Head Black Countersunk Screw

Name: DIN 7991 Socket Allen Head Black Countersunk Screw
Brand: Dongguan VG Fasteners Co., Ltd.
SKU: 2110448585

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

Stainless Steel

Type

Screw

Model NO.

DIN7991

Groove

Hexagon

Connection

Common Bolt

Standard

DIN, GB, ANSI, BSW, JIS, ISO

Grade

10.9

Product Name

DIN7991 Socket Flat Screw

Size 1

M3-M20

Size 2

1/4-3/4"

Materials

Stainless Steel

Transport Package

Neutral Packing

Specification

M3-M20

Trademark

Origin

China

HS Code

731815

Production Capacity

10 Million/Month

Key features

Wide Size Range: Diameter from M3 to M30, inch sizes 10# to 1-1/4'. Custom sizes available.

Multiple Material Options: Stainless Steel (SS304, SS316) and Alloy Steel (Grades 8.8, 10.9, 12.9).

Custom Surface Treatment: Plain, Zinc Plated, H.D.G, and other finishes customizable per request.

OEM/ODM Support: Flexible OEM and ODM services available for custom fastener solutions.

Quality Certifications: ISO9001, CE, SGS, and ROHS certified for strict quality assurance.

Competitive Pricing: Cost-effective solutions with competitive prices for bulk and custom orders.

Fast Sample Delivery: Free samples available within 7-10 working days after price confirmation.

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

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: ≤1.91h

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?

Provide your detailed request including item number, style, logo, size, material, surface treatment, and quantity. You can leave an inquiry or email us for a prompt response.

Q:How can I get a free sample?

We offer free samples when you confirm our price is acceptable. Payment options for samples include T/T, PayPal, or Western Union.

Q:What is the process of placing an order?

The process is: Send inquiry, receive quotation, complete payment, open mold and make samples, deliver samples or send pictures for approval, and proceed with mass production.

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

Samples take 7-10 working days. Bulk orders usually take 15-30 working days after order confirmation.

Q:What materials are available for these screws?

We provide Stainless Steel (SS304, SS316) and Alloy Steel in grades 8.8, 10.9, and 12.9.