High Precision 10.9 Grade Black Oxide M2 M3 M4 M5 M8 Carbon Steel Hexagon Hex Countersunk Screw

Name: High Precision 10.9 Grade Black Oxide M2 M3 M4 M5 M8 Carbon Steel Hexagon Hex Countersunk Screw
Brand: Ningbo Mianxuan Import &Export Co., Ltd.
SKU: 2294521495

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

US$0.01

5,000-19,999 Pieces

US$0.006

20,000-49,999 Pieces

US$0.003

50,000+ Pieces

Sample price:US$0.00/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, JIS, GOST

Grade

10.9

Price

Factory Price

Service

One-Stop Service

Quality

100% Tested

Surface

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

Lead Time

15-30 Days

Package

Standard Package or Customer's Packing

Box

Customer's Brand Box/Plain Box

MOQ

Can Be Negotiated

Shipment

by Sea / Truck / Plane / Express

Exterior Finish

Customized

Sample

Available

Used

Machinery, Chemical Industry, Environmental

Online Sales

24 Hours Online

OEM/ODM

Available

Mark

Customized or Factory Mark

Transport Package

Carton

Specification

M2-M20

Trademark

Mianxuan, Customized

Origin

Zhejiang, China

HS Code

8501109101

Production Capacity

100tons Per Month

Key features

Charpy impact testing per GOST 9454 at -40 Degree and -50 Degree. Test reports are included with every batch. Materials selected for Arctic and Siberian conditions.

GOST 7798-70, GOST ISO 4014-2013, GOST 32484-2016, DIN 931/933, EN 14399, ASTM A325/A490. Supplied to whichever standard your project specifies.

Hex bolts, heavy hex structural bolts, stud bolts, hex nuts, lock nuts, flat washers, spring washers, anchor bolts, threaded rods - all from one certified source.

10+ years supplying Russian infrastructure, construction, and oil & gas projects. We understand the certification, documentation, and logistics requirements.

Direct from our factory to your project site. Bulk order savings, no middlemen. Transparent quoting with detailed cost breakdowns.

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: ≤4.80hTerms 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:Are samples free of charge?

Yes, free samples for standard items. Customer covers courier freight. Custom samples are charged at the tooling and setup cost.

Q:Can you supply fasteners with metric fine thread for vibration-prone applications?

Yes. Metric fine thread (e.g., M10 x 1.25, M12 x 1.5) is available for all standard bolt and nut types. Commonly specified for rotating equipment and automotive applications.

Q:What strength grades are available?

Full range from 4.8 to 12.9 in carbon and alloy steel. Stainless steel A2-70 and A4-80 are also available. Every grade comes with a matching certification.

Q:Do you accept custom fastener orders?

Yes. Non-standard dimensions, special materials (40CrNiMoA, duplex stainless, brass), custom coatings, and private-label packaging are all available. Send your drawing for a feasibility review within 24 hours.