What is your quality assurance process?

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

What is the minimum order quantity?

The minimum order quantity is 1 Kg.

Where is your company located?

We are located in Ningbo, China, a major port city with excellent transportation infrastructure. We have been established since 2009.

Heavy-Duty Industrial DIN 603 Cup Head Bolts for Maximum Strength

Name: Heavy-Duty Industrial DIN 603 Cup Head Bolts for Maximum Strength
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2188045395

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

Comprehensive Customization: Flexible customization from samples or designs with full customization options available.

ISO Certified Manufacturer: Established in 2009, ISO-certified with vertically integrated production and R&D capabilities.

Rigorous Quality Assurance: Two-stage protocol including pre-production sampling and full batch torque/salt spray testing.

Wide Material Selection: Available in carbon steel and stainless steel with various grades like 8.8, 10.9, and 12.9.

Diverse Finish Options: Offers Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, Black Oxide, and Plain finishes.

Free Sample Availability: Free standard samples (1-3 pcs) available with express shipping options via DHL/UPS/FedEx.

Global Market Presence: Serving clients across North America, Europe, Asia, South America, Africa, and the Middle East.

Flexible Payment Terms: Accepts T/T, LC, D/P, PayPal, and Western Union with negotiable terms for bulk orders.

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: ≤4.47h

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:Can you provide samples?

Free samples (1-3 pcs) are available. Express shipping via DHL/UPS/FedEx is supported. Customized samples take 15 working days. Sample costs are refundable upon bulk order confirmation.

Q:What are the payment terms?

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

Q:What materials are used for the bolts?

We use carbon steel and stainless steel. Available grades include 8.8, 10.9, and 12.9, suitable for heavy loads and various industrial applications.

Q:Do you offer customization services?

Yes, we offer flexible customization from samples or designs, including full customization. We can produce non-standard parts and fasteners according to specific requirements.

Q:What is the delivery time?

Standard delivery time is normally 30-40 days. Peak season lead time is one month, while off-season lead time is also one month.