What surface treatments are offered?

Options include Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, Black Oxide, and Plain finish.

What is the delivery time?

Delivery is typically within 30-40 days after the official order is confirmed. Peak season lead time is one month, and off-season is within 15 workdays.

Is quality control guaranteed?

Yes, we follow ISO/TS 16949:2009 standards. Each shipment includes an effective inspection report and a corresponding material certificate.

DIN 7991 SS304 SS316 Stainless Steel Hex Socket Countersunk Sink Head Screw

Name: DIN 7991 SS304 SS316 Stainless Steel Hex Socket Countersunk Sink Head Screw
Brand: Ningbo Mianxuan Import &Export Co., Ltd.
SKU: 2125021615

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

US$0.01-0.90

1,000 Pieces

Sample price:US$3.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Countersunk Head

Model NO.

DIN 7991

Groove

Hexagon

Connection

Common Bolt

Head Style

Counter Sunk Bolt

Standard

DIN, GB, ANSI, BSW, JIS, GOST

Grade

A2-70 A4-70

Thread

Unc, Unf, Un, Metric Coarse, Fine

Surface

Plain, Zinc Plated (Blue, White, Black, Yellow), N

Ppap

1 2 3 4 5

Ppm

200 150 100 50

Feature

One-Stop Services

Test

Professional Equipments

Transport Package

Bulk Packaging, Small Box(Glue Box, Color Box)

Specification

M3-M24

Trademark

MIANXUAN

Origin

Ningbo Zhejiang

HS Code

7318159001

Production Capacity

50000000PCS/Year

Key features

Customizable Specifications: Thread, surface treatment, and dimensions can be customized per customer drawings.

Wide Material Options: Available in Carbon Steel, SS304, and SS316 Stainless Steel.

Diverse Surface Treatments: Options include Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, and Black Oxide.

Strict Quality Control: ISO/TS 16949:2009 certified with material certificates and inspection reports.

Large Production Capacity: Annual output reaches 30,000 tons with advanced automated production lines.

Flexible MOQ Policy: MOQ depends on client needs; trial orders are welcome before mass production.

Transparent Production Tracking: Weekly reports with digital pictures and videos provided during production.

Multiple Payment Methods: Accepts T/T, L/C, Escrow, PayPal, Western Union, and MoneyGram.

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: ≤3.19hTerms 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 information is needed to get a quote?

Please provide 2D or 3D drawings (including material, dimension, tolerance, surface treatment, and technical requirements), quantity, application, or samples.

Q:What is the Minimum Order Quantity (MOQ)?

The MOQ depends on the client's needs. We welcome trial orders before mass production.

Q:What payment terms are accepted?

We accept T/T, L/C, Escrow, PayPal, Western Union, and MoneyGram.

Q:How can I track production progress without visiting?

We provide a detailed product schedule and send weekly reports with digital pictures and videos showing machining progress.

Q:What materials are available for this screw?

The screws are available in Carbon Steel, SS304, and SS316 Stainless Steel.