Is customization available?

Yes, we offer flexible customization including customization from samples, designs, and full customization. We can produce according to specific customer requirements for standards and finishes.

What materials are used for these bolts?

The bolts are made from Carbon steel and Stainless Steel.

What are the main applications for these products?

These products are applied in Machinery, Chemical Industry, Environmental sectors, and Building construction.

Industrial-Grade Square Neck Bolts DIN 603 for Heavy Construction

Name: Industrial-Grade Square Neck Bolts DIN 603 for Heavy Construction
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2187978315

Zhejiang, ChinaNingbo Yinzhou Sokun Import and Export Co., Ltd.

US$0.10

1,000-4,999 Pieces

US$0.09

5,000-9,999 Pieces

US$0.08

10,000-49,999 Pieces

US$0.06

50,000+ Pieces

Product profile

Customization

Available

Material

Stainless Steel

Type

Mushroom Head

Model NO.

DIN 603

Connection

Common Bolt

Head Style

Round

Standard

DIN, ANSI, GB, JIS, BSW, GOST

Grade

8.8/10.9/12.9

Application

Machinery, Chemical Industry, Environmental, Building

Finish

Passivation, Zinc Plating, Black, Plainhdg, Yellow

Standards

DIN912

Finished

Passivation, Zinc Plating, Black, Plainhdg, Yellow

Certificate

ISO9001

Selling Units

Building, Industry, Machinery

Package

Customer'require

Delivery Time

15-30

Transport Package

Cartons & Pallets or According to Customer''s Requ

Specification

Allen Bolt

Trademark

SOKUN

Origin

Zhejiang

HS Code

7318150000

Production Capacity

100000000

Key features

Customizable Standards: Supports DIN, ANSI, GB, JIS, BSW, GOST standards with flexible customization options.

Multiple Finish Options: Available in Passivation, Zinc Plating, Black, Plainhdg, Yellow, and Hot Dip Galvanized.

High Strength Grades: Offers Grade 8.8, 10.9, and 12.9 options for heavy construction and machinery applications.

ISO Certified Quality: ISO-certified manufacturer with rigorous two-stage quality assurance and salt spray testing.

Free Sample Availability: Provides 1-3 free standard samples with express shipping via DHL/UPS/FedEx.

Flexible Payment Terms: Accepts T/T, LC, D/P, PayPal, and Western Union with customizable deposit structures.

Fast Delivery Time: Standard delivery within 15-30 days, with peak season lead time of one month.

Global Service Network: Serves global markets including North America, Europe, Australia, and Asia with expert support.

Company profile

High Repeat Buyers ChoiceODM ServicesR&D CapabilitiesProduction Process Visualization

Ningbo Yinzhou Sokun Import and Export Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 15 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤4.98h

AI-Powered supplier vetting

SummarySokun is a limited company with 21 employees, related companies, and product coverage including fasteners, machined parts, and stamping parts. It supports customization from samples and designs, offers ODM services, and reports OEM service for well-known brands. Quality processes include quality assurance, documented inspection instructions, and complaint-handling records, although finished-product inspection is random and only one quality inspector is reported. Production-related strengths include in-stock capability, CNC and punching equipment, and one-month stated lead times in both peak and off-season periods. Key limitations are the absence of a valid manufacturing-capacity contract with related subcontractors, no overseas warehouse, branches, agents, or showrooms, and no documented R&D audit materials, new products in the past year, or R&D patents. Financial credibility cannot be determined from the provided information.

After-Sales capabilityThe supplier has a clear customer-complaint procedure with followed records and accepts several quotation and payment terms. However, it has no overseas warehouse, showroom, agent, or branch, and reports zero countries with overseas services, limiting evidence of localized after-sales support.

R&D capabilityThe supplier provides ODM and multiple customization-based design services, but reports no new products during the past year, no available SDK, no R&D audit documentation, and zero R&D patents. These facts indicate design support but limited documented evidence of independent innovation.

Production capacityProduction evidence includes CNC and punching equipment, in-stock capability, one-month lead times in both peak and off-season, and a product scope aligned with machined and stamping parts. Nevertheless, there is no valid manufacturing-capacity contract with related subcontractors, which creates a documented capacity-governance weakness.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, flexible customization, and minor customization, and also offers ODM services. This is direct evidence of broad customization capability.

Product Q&A

Q:What is the minimum order quantity?

The minimum order quantity is 1 Kg.

Q:What are the payment terms?

Standard terms are 30% T/T deposit with 70% balance against Bill of Lading copy. For orders under $1,000 USD, full advance payment is recommended. We also accept LC, D/P, PayPal, and Western Union.

Q:Can you provide free samples?

Yes, we provide 1-3 free standard specification samples. Sample costs are refundable upon bulk order confirmation. Express shipping can be arranged via DHL, UPS, or FedEx on the customer's account.

Q:What is the delivery time?

Normally, delivery takes 30-40 days. For custom samples, prototyping takes within 15 working days. Peak season lead time is one month, while off-season lead time is also one month.

Q:What quality assurance systems do you have?

We implement a rigorous two-stage quality assurance protocol: pre-production sampling with dimensional verification and full batch inspection including torque testing, salt spray analysis, and material certification prior to container loading.