Are free samples available?

Yes, 1-3 pcs of standard specification samples are free. Sample costs are refundable upon bulk order confirmation.

What are the payment terms?

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

What quality assurance measures are in place?

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.

Premium Serrated Lock Washers Type J for Heavy-Duty Industrial Use

Name: Premium Serrated Lock Washers Type J for Heavy-Duty Industrial Use
Brand: Ningbo Yinzhou Sokun Import and Export Co., Ltd.
SKU: 2200326485

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

US$0.03

10-4,999 Pieces

US$0.02

5,000-99,999 Pieces

US$0.01

100,000+ Pieces

Product profile

Customization

Available

Type

Toothed Lock Washers

Material

Brass

Model NO.

DIN 6798 (J)

Combination Washer Structure

Combination Washer Packaging

Spring Washer Type

Standards

GB, DIN, ISO, JIS

Finished

Zinc

Name

Toothed Lock Washers

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

DIN 6798 Standard Compliance: Meets DIN 6798 (Type J) heavy-duty standards for serrated lock washers.

Customizable Finishes: Available in Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, and Black Oxide.

Flexible Customization: Supports customization from samples, designs, and full customization based on customer requirements.

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

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

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

Low Minimum Order Quantity: Flexible MOQ starting from 1 Kg, suitable for various order sizes.

Global Shipping Capability: Located in Ningbo/Shanghai ports with 15 years export experience and global market reach.

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: ≤5.09h

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 standards do the serrated lock washers comply with?

The washers comply with DIN 6798 (Type J) heavy-duty standards.

Q:What materials and finishes are available?

Materials include carbon steel and stainless steel. Finishes available are Zinc Plated, Hot Dip Galvanized, Dacromet, Nickel Plated, Black Oxide, and Plain.

Q:Can the product be customized?

Yes, we offer flexible customization including from samples, designs, and full customization. Sizes are based on standards and customer requirements.

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

The minimum order quantity is 1 Kg.

Q:How long is the delivery time?

Normally 30-40 days. During peak season, it takes one month to 1-3 months; off-season is one month.