What is your payment method?

Our standard payment terms are 30% T/T as a deposit and the remaining 70% before shipping. We also accept L/C and D/P. For more detailed information, we can discuss via email.

What is your packaging?

Our standard packaging is 20-25 kg per carton, with 36 or 48 cartons per pallet. Each pallet weighs approximately 900-960 kg. We can also print customer logos on the cartons or customize packaging according to specific requirements.

Do you accept custom designs on products or boxes?

Yes, we accept customized designs for both products and packaging. We have a professional design team capable of creating products based on your specifications.

Absolutely. We are verified suppliers on 'Made-in-China' and undergo a rigorous certification process to ensure we are a legitimate manufacturer.

May I visit your factory?

Of course. We welcome visits to your factory at any time. Before your arrival, please contact us to inform us of your schedule so we can arrange transportation from the airport or train station.

Stainless Steel Screws, Carbon Steel DIN7991 Hexagon Socket Countersunk Head Screws

Name: Stainless Steel Screws, Carbon Steel DIN7991 Hexagon Socket Countersunk Head Screws
Brand: Bolnut Fastener Co., Ltd
SKU: 2212935745

Jiangsu, ChinaBolnut Fastener Co., Ltd

US$0.10

1 Piece

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Material

Stainless Steel/Carbon Steel

Type

Countersunk Head

Model NO.

DIN7991

Groove

Hexagon Socket

Connection

Common Bolt

Head Style

Round

Standard

DIN, GB, ANSI, BSW, JIS, GOST

Grade

8.8

Application

Machinery, Chemical Industry,Building

Finish

Black Oxide, Zinc Plated

MOQ

10000pieces

Thread

Metric

Name

Hexagon Socket Countersunk Head Screws

Certificate

ISO9001

Measurement System

Inch, Metric

Transport Package

20-25kg/Carton+900kg Pallet

Specification

M3-M20

Trademark

BNT

Origin

China

HS Code

731815

Production Capacity

1000ton/Month

Key features

Wide Material Selection: Available in Stainless Steel (SS201-SS904L) and Carbon Steel grades.

Multiple Finishing Options: Zinc plating, HDG, Black Oxide, Dacroment, and Nickel plating available.

Custom Logo and Design: Accept custom logos on products and packaging based on customer drawings.

Free Sample Availability: Free samples provided for standard fasteners under 1kg weight limit.

Flexible Production Capacity: Cold forging for M2-M24 and hot forging for M24-M100 sizes.

Fast Delivery for Stock Items: In-stock goods delivered within 2-5 days for immediate needs.

Comprehensive Certifications: ISO9001 certified with strict quality assurance and durability testing.

Global Standard Compliance: Meets DIN, ASTM, JIS, EN, ISO, GB, ANSI, BSW, and GOST standards.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceFast Delivery

Bolnut Fastener Co., Ltd

Jiangsu, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 13 YearsNearest Port: SHANGHAI , NINGBO ,ZHAPU , SHENZHEN, TIANJINGAverage Response Time: ≤0.87h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company in Zhangjiagang, Suzhou, with business scopes covering labor protection products, apparel, textiles, communication equipment, electronics, and certain medical protective products. It is described as a professional technical supplier and offers multiple customization modes, ODM services, and OEM services for popular brands. However, it has only one R&D engineer, launched no new products in the past year, and does not provide 3D software or SDK services. Service procedures and complaint-handling procedures exist, but supplier approval records are incomplete. Financial information is represented only by reporting years, without performance values. No overseas warehouse, showroom, overseas branch or offline trade-show participation is reported.

Supplier typeThe supplier is explicitly classified as a trade company, while its stated scope includes labor protection products, apparel, textiles, medical protective equipment, communication equipment, and electronic products. It is also identified as a professional technical supplier, indicating a trading-oriented business with technical and customization support rather than confirmed manufacturing status.

After-Sales capabilityThe supplier has a clear complaint-handling procedure with followed records, and it has a corrective and preventive action mechanism with implementation records. However, its general service-assessment procedure has no records, and its approved-supplier list lacks approval signatures or dates, indicating documented but incompletely controlled service processes.

R&D capabilityThe supplier is identified as a professional technical supplier and offers ODM services, but it has only one R&D engineer, launched no new products in the past year, and lacks both 3D software design and SDK capabilities. This shows some technical development and design support, but limited demonstrated innovation output and digital R&D capability.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services, directly evidencing broad customization and design-manufacturing support.

Client casesA repeat-buyer preference of 50%–80% is reported, and the supplier states that it provides OEM services for popular brands. These are positive customer-related indicators, but no named customers, specific projects, order examples, or independently verifiable case details are provided.

Product Q&A

Q:Please send the catalog.

If you require a catalog, please provide your email address, and we will send it within two working hours.

Q:Can I obtain some samples?

Yes, we believe that sample orders are an excellent way to initiate cooperation. All our samples are free of charge; however, we only ship weights under 1 kg. For existing customers, we offer free samples and cover the express charges.

Q:Can you send a price list?

Certainly. Please provide your email address, and we will send the price list within two working hours.

Q:Could you accept my own logo or design on the goods?

Yes, we can accommodate custom logos or designs on the products without issue.

Q:What is the delivery time?

Generally, if the goods are in stock, we can deliver them within 2-5 days. For quantities ranging from 1-2 containers, the delivery period is approximately 18-25 days. If the order exceeds two containers and requires expedited production, we can prioritize your order at the factory.