What materials are available for these screws?

We offer Stainless Steel (SS201, SS303, SS304, SS316, SS316L, SS904L, F593) and Carbon Steel with grades ranging from 4.6 to 12.9.

How are the products packaged?

Standard packaging is 20-25 kg per carton, with 36 or 48 cartons per pallet. Custom packaging with customer logos is also available.

Are you a verified manufacturer?

Yes, we are a verified supplier on Made-in-China with over 10 years of experience, ensuring legitimate manufacturing and quality assurance.

Factory Outlet, DIN7991 Stainless Steel Screws, DIN 7991 Hexagon Socket Countersunk Head Screws

Name: Factory Outlet, DIN7991 Stainless Steel Screws, DIN 7991 Hexagon Socket Countersunk Head Screws
Brand: Bolnut Fastener Co., Ltd
SKU: 2212015115

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

Name

Hexagon Socket Countersunk Head Screws

Certificate

ISO9001,RoHS

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 (SS304/316) and Carbon Steel with various grades.

Custom Logo & Design: We accept custom logos and designs on products and packaging based on your specs.

Flexible MOQ: Low MOQ of 0.4 Ton available; 10,000 pieces for specific custom orders.

Free Samples: Free samples provided for standard fasteners and existing customers (weight <1kg).

Professional OEM/ODM: Expert manufacturing with precision cold/hot forging and CNC machining capabilities.

Multiple Finishes: Options include Zinc Plated, Black Oxide, HDG, Geomet, and Dacroment.

Strict Quality Assurance: Rigorous durability tests and ISO9001/RoHS certified manufacturing process.

Fast Delivery: Stock items ship in 2-5 days; custom orders take 10-30 days depending on season.

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: ≤0.69h

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:What is the minimum order quantity?

The general MOQ is 0.4 Ton. For specific custom orders, the MOQ is 10,000 pieces.

Q:Do you provide free samples?

Yes, free samples are available for standard fasteners. We also offer free samples to existing customers, covering express charges for weights under 1 kg.

Q:What are the payment terms?

Standard terms are 30% T/T deposit and 70% before shipping. We also accept L/C, D/P, PayPal, and Western Union.

Q:What is the lead time for production?

Stock items deliver in 2-5 days. Custom orders take 10-15 days in slack season and 15-30 days in busy season.

Q:Can you customize the product design or logo?

Yes, we accept custom designs and logos on products and packaging. Our professional team can create items based on your samples or drawings.