What is the lead time for orders?

Delivery time is 20-30 days after receiving payment. Peak season lead time is within 15 workdays to 3 months.

What is the Minimum Order Quantity (MOQ)?

The Minimum Order Quantity is 10 Pieces.

Which international standards do you follow?

We follow DIN, ASME, ANSI, ISO, UNI, JIS, GB, BSW, and GOST standards.

Manufacture Price DIN7991 Black Oxide 12.9 Grade Countersunk Hex Socket Head Bolt

Name: Manufacture Price DIN7991 Black Oxide 12.9 Grade Countersunk Hex Socket Head Bolt
Brand: Shanghai Borui Metal Products Co., Ltd.
SKU: 2120928702

Shanghai, ChinaShanghai Borui Metal Products Co., Ltd.

US$0.05

1,000-9,999 Pieces

US$0.03

10,000-49,999 Pieces

US$0.01

50,000+ Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Streel/Alloy Steel/Stainless Steel/Brass

Type

Countersunk Head

Model NO.

DIN 7991

Connection

Common Bolt

Head Style

Counter Sunk Bolt

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

4.8/8.8/10.9/12.9/A2-70/A4-80

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Zinc Plated/Black Oxide/Plain/PTFE/HDG/Dacromet

Product Name

Countersunk Hex Bolts

Brand

G&T

Thread

Unc/Unf/Metric

Service

OEM ODM Custom Service

Coating

Zinc Plated/Black Oxide/PTFE/Dacromet/HDG/etc

Transport Package

Carton+Pallet

Specification

M3-M24, According to customer's demand

Trademark

Origin

Shanghai

HS Code

7318151001

Production Capacity

50000 Pieces/Year

Key features

Extensive Material Selection: Available in Carbon Steel, Alloy Steel, Stainless Steel, Brass, and special materials for extreme conditions.

Wide Size Range: Product sizes cover M3 to M150, with lengths ranging from 5mm to 12 meters.

Multiple Surface Finishes: Options include Zinc Plated, Black Oxide, PTFE, HDG, Dacromet, and Plain finishes.

Global Standards Compliance: Meets DIN, ASME, ANSI, ISO, UNI, JIS, and other international standards.

OEM/ODM Custom Service: Supports customization from samples, designs, and full customization with professional R&D.

High Grade Options: Available in grades 4.8, 8.8, 10.9, 12.9, A2-70, and A4-80 for various strength needs.

20+ Years Experience: Over two decades of experience in producing and exporting high-quality fasteners globally.

One-Stop Procurement: Provides a complete solution for standard and non-standard fasteners including bolts, nuts, and screws.

Company profile

High Repeat Buyers ChoiceMulti-language PioneerExperienced TeamExhibition Experience

Shanghai Borui Metal Products Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤1.73hTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is a Shanghai-based limited trading company with 41 employees, focused on fasteners and related metal, mechanical, plastic, rubber, electrical, and photovoltaic products. It offers sample-, design-, and full-customization services, as well as ODM and OEM services, and reports export sales of 71%–90%. In-stock service is available, but there is no overseas warehouse, showroom, agent, or branch. Financial records are identified for 2022–2024, but no financial values or performance conclusions are provided. Service-process evidence is weak: no written corrective/preventive-action or complaint-handling procedures or records are available, while quality-assurance status and fire-drill status are unknown. No certifications, customer cases, or production facilities are explicitly documented.

Supplier typeThe supplier is identified as a limited company and trading company, with 41 employees, no stated parent-group affiliation, and a Shanghai registered and physical address. Its stated product scope centers on fasteners and related industrial products.

After-Sales capabilityThe supplier has in-stock service capacity, but it has no overseas warehouse, showroom, overseas agent, or branch. More importantly, no written corrective/preventive-action procedures or records and no written customer-complaint procedures or records are available, indicating a documented after-sales process is not demonstrated.

R&D capabilityThe supplier lists research and development of metal products and hardware products, and offers ODM services. However, no SDK is available, and the information does not provide measurable R&D resources, patents, or development outcomes; the documented capability is therefore limited but present.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, and full customization, together with ODM and OEM services for popular brands. These statements provide direct evidence of broad customization and design-manufacturing service capability.

Product Q&A

Q:What materials are available for these bolts?

We offer Carbon Steel, Alloy Steel, Stainless Steel (S304, S316, etc.), Brass, and special materials for ultra-high/low temperature or corrosion scenarios.

Q:What is the size range of the countersunk bolts?

The product size covers M3 to M150, with lengths ranging from 5 millimeters to 12 meters.

Q:Can I customize the bolts with my own design?

Yes, we provide OEM/ODM services including customization from samples, designs, and full customization.

Q:What surface treatments are available?

Options include Zinc Plated, Black Oxide, Plain, PTFE, HDG, and Dacromet.

Q:What are the payment terms?

We accept LC, T/T, D/P, PayPal, Western Union, Small-amount payment, and Money Gram.