China Wholesale Carbon Steel Black Oxide Grade 10.9 Hex Socket Countersunk Screw DIN7991

Name: China Wholesale Carbon Steel Black Oxide Grade 10.9 Hex Socket Countersunk Screw DIN7991
Brand: Ningbo Mianxuan Import &Export Co., Ltd.
SKU: 2178436012

Zhejiang, ChinaNingbo Mianxuan Import &Export Co., Ltd.

US$0.10

7,000-19,999 Pieces

US$0.08

20,000-49,999 Pieces

US$0.06

50,000+ Pieces

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Countersunk Head

Model NO.

DIN7991

Groove

Hexagon

Connection

Common Bolt

Head Style

Counter Sunk Bolt

Standard

DIN, GB, ANSI, BSW, GOST

Grade

10.9

Product Name

Black Hex Socket Countersunk Screw

Service

One-Stop Service

Box

Customer's Brand Box/Plain Box

MOQ

Can Be Negotiated

Price

Factory Price

Quality

100% Tested

Lead Time

15-30 Days

Mark

Customized or Factory Mark

Sample

Available

Shipment

by Sea / Truck / Plane / Express

Package

Standard Package or Customer's Packing

Exterior Finish

Customized

Used

Machinery, Chemical Industry, Environmental

Online Sales

24 Hours Online

OEM/ODM

Available

Transport Package

Carton

Specification

M4-M20

Trademark

Mianxuan, Customized

Origin

Zhejiang, China

HS Code

8501109101

Production Capacity

100tons Per Month

Key features

Manufactured according to DIN 7991 Countersunk Socket Screw standards, featuring a flat head design that allows the screw surface to sit flush with the assembly for a clean appearance.

The Black Oxide Hex Socket Screw provides a uniform black finish while maintaining dimensional accuracy and improving surface appearance for industrial applications.

Made from high-quality Carbon Steel Countersunk Screw material, available in high strength grades such as 8.8, 10.9, and 12.9 for demanding fastening requirements.

The internal hex drive of the Flat Head Allen Screw provides efficient torque transmission and helps reduce tool slipping during tightening operations.

We support Custom DIN 7991 Screw manufacturing with customized sizes, thread specifications, strength grades, surface treatments, markings, and packaging according to customer requirements.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceR&D CapabilitiesODM Services

Ningbo Mianxuan Import &Export Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2014-07-01Nearest Port: Ningbo, Zhapu, ShanghaiAverage Response Time: ≤1.74hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummaryNingbo Mianxuan Import & Export Co., Ltd. is identified as a China-based manufacturer/factory offering vehicle parts, CNC machining, stamping, casting, die-casting, fasteners, plastic, and rubber products. It reports TS 16949 and ISO 9001 certifications, more than 10 production lines, 6–10 quality-control staff, and shipment inspection reports with material certificates. The supplier provides 3D software design, ODM, and several customization options, but reports no new products in the past year, no SDK, and no OEM service for popular brands. Service-management documentation is weak: no written procedures or records are reported for assessments, corrective actions, or complaint handling. It has no in-stock capability, overseas warehouse, or overseas showroom. Financial records are indicated for 2023–2025, but their results are not provided, so financial credibility cannot be determined. No customer cases are supplied.

Supplier typeThe supplier is explicitly identified as a manufacturer/factory and limited company in Ningbo, Zhejiang, China. Its stated scope covers fasteners, metal products, machinery, vehicle parts, CNC machining, stamping, casting, die-casting, plastic, and rubber parts, indicating broad manufacturing and industrial-product coverage.

CertificationsThe supplier reports holding TS 16949 and ISO 9001 management-system certifications. It also states that each shipment will include an effective inspection report and corresponding material certificate, providing explicit evidence of documented quality-related controls.

After-Sales capabilityThe supplier reports no written procedures or records for service-capability assessment, corrective and preventive actions, or effective customer-complaint handling. It also lacks in-stock service, overseas warehouse, and overseas showroom capabilities, indicating a documented weakness in after-sales and service infrastructure.

Production capacityThe supplier reports more than 10 production lines, 6–10 quality-control staff, and a product range spanning vehicle parts, CNC machining, stamping, casting, die-casting, fasteners, plastic, and rubber parts. It is located near Ningbo and Shanghai ports and reports 21 qualified suppliers, but has no inventory capability and peak-season lead-time data is inconsistent or unclear.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, 3D software design services, and ODM services. These statements provide direct evidence of broad product and design customization capability.

Product Q&A

Q:What are DIN 7991 screws commonly used for?

DIN 7991 Screws are widely used in machinery, equipment assembly, precision components, and applications where a flush mounting surface is required.

Q:Why choose black oxide treatment for countersunk screws?

Black Oxide Screws provide a consistent black appearance and are suitable for applications requiring a low-reflective surface finish and moderate corrosion protection.

Q:What strength grades are available for carbon steel socket screws?

Carbon Steel Socket Screws can be supplied in different strength grades, including Class 8.8, 10.9, and 12.9, depending on the required mechanical performance.

Q:Can DIN 7991 screws be produced in other materials?

Yes. Countersunk Allen Screws are available in stainless steel 304, stainless steel 316, alloy steel, brass, titanium alloy, and other materials according to application requirements.

Q:Do you offer customized production for flat head socket screws?

Yes. We provide OEM Socket Screw solutions including customized dimensions, thread types, head designs, surface finishes, packaging, and labeling based on drawings or samples.