What are the payment terms?

Standard terms are 30% T/T deposit and 70% against B/L copy. For orders under $1,000, full advance payment is recommended. LC at sight is also acceptable.

What quality certifications do you have?

We are an ISO-certified manufacturer. Products comply with ASTM F2282, ASME B 18.16.4, DIN, ANSI, GB, JIS, and GOST standards.

Do you provide ODM or OEM services?

Yes, we offer flexible customization including customization from samples, designs, and full customization services.

Premium Large Serrated Flange Locknuts for Secure Fastening

Name: Premium Large Serrated Flange Locknuts for Secure Fastening
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2249029485

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

US$0.01-0.10

10,000 Pieces

Product profile

Customization

Available

Material

Carbon Steel, Stainless Steel,Brass

Type

Flanged or Collared Hex Nuts

Model NO.

ASME B 18.16.4 - 2008

Connection

Head Style

Standard

DIN, ANSI, GB, JIS, GOST, BSW

Grade

Standards

GB, DIN, ISO, JIS

Finished

Passivation, Zinc Plating, Black, Plainhdg, Yellow

Certificate

ISO9001/SGS

Selling Units

Building, Industry, Machinery

Package

Customer'require

Delivery Time

15-30

Transport Package

Cartons & Pallets or According to Customer''s Requ

Specification

Trademark

SOKUN

Origin

Zhejiang

HS Code

7318150000

Production Capacity

100000000

Key features

Multi-Material Options: Available in Carbon Steel, Stainless Steel, Brass, Aluminum, and Titanium Alloys.

Flexible Customization: Custom sizes, finishes (Zinc Plated, Galvanized), and standards per customer requirements.

ISO Certified Quality: ISO-certified manufacturer with rigorous two-stage QA including torque and salt spray tests.

Low MOQ Support: Minimum Order Quantity starts at just 1 Kg, suitable for small batches and testing.

Free Sample Provision: Free standard samples available; sample cost refundable upon bulk order confirmation.

Fast Prototyping: Customized samples can be produced within 15 working days for rapid verification.

Global Shipping Ready: Located in Ningbo/Shanghai ports with 15 years export experience and flexible Incoterms.

Compliance Assurance: Products comply with ASTM, ASME, DIN, ANSI, GB, JIS, and GOST international standards.

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: ≤4.46h

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 materials are available for these locknuts?

We offer Carbon Steel, Stainless Steel, Brass, Aluminum, and Titanium & Alloys.

Q:Can the size and finish be customized?

Yes, sizes follow standards or customer requirements. Finishes include Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, Black Oxide, and Plain.

Q:What is the minimum order quantity (MOQ)?

The MOQ is 1 Kg, allowing for small batch orders and testing.

Q:How long does delivery take?

Standard delivery is 30-40 days. Custom samples take 15 working days. Peak season lead time is 1-3 months.

Q:Are free samples available?

Yes, 1-3 pcs of standard specifications are free. The sample cost is refundable upon bulk order confirmation.