What certifications do your products have?

Our products comply with DIN 6797J standards and come with Material Test Certificates upon request.

DIN 6797j Spring Steel M20 M22 Internal Toothed Lock Washer

Name: DIN 6797j Spring Steel M20 M22 Internal Toothed Lock Washer
Brand: Qewitco Fasteners Co., Ltd
SKU: 2111553852

Shandong, ChinaQewitco Fasteners Co., Ltd

US$0.001-0.01

1,000 Pieces

Sample price:US$20.00/piece.Request sample

Product profile

Customization

Available

Type

Lock Washer

Material

Spring Steel

Model NO.

M20 M22 Internal Toothed Lock Washer

Combination Washer Structure

A Type

Combination Washer Packaging

All Inclusive

Spring Washer Type

Standard

Delivery

20-30 Days

Certification

DIN 6797j

Packag Color

Customizable

Thread Standard

Bsw

Custom Order

Customization by Drawing/Sample

ODM/OEM

Available

Service

Custom-Made Service

Material Test Certificate

Have

Sample

Samples in Stock Are Free with Freight Collect

Price Terms

Fob/CFR/CIF/DDP/DAP

Color

Customizable or Sliver

Quality Control

100% Quality Inspection

Application2

Connection, Fastening

Finish

Zinc Plated, Zinc Flake, HDG

Transport Package

Bulk Pack Small Boxed

Specification

M2.5 TO M30

Trademark

Qewitco

Origin

China

HS Code

721391

Production Capacity

10000ton/Year

Key features

Superior Anti-Loosening Performance: Internal teeth bite firmly to prevent loosening from vibration or dynamic loads.

High Vibration Resistance: Ideal for automotive, machinery, and industrial applications with high vibration.

Wide Size Range: Available in sizes from M2.5 to M30 for various mechanical applications.

Durable Spring Steel Material: Made from high-quality spring steel with excellent elasticity and fatigue resistance.

Corrosion Protection Options: Available in black oxide, zinc plated, or zinc flake finishes for rust resistance.

Flexible Packaging: Supplied in bulk packs or small boxes for convenient handling and storage.

Customizable Color: Color options include customizable finishes or standard silver.

Customization by Drawing: OEM/ODM services available with customization based on drawings or samples.

Company profile

Years of Export ExperienceExperienced TeamSelf-brandedHigh Repeat Buyers Choice

Qewitco Fasteners Co., Ltd

Shandong, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2003-12-05Average Response Time: ≤0.47hTerms of Payment: T/T

AI-Powered supplier vetting

SummaryThe supplier demonstrates established export experience, with 90% of sales from exports and 22 years of exporting. It has ISO9001:2015 certification, raw-material traceability, quality assurance, and 100% finished-product inspection, although inspection is performed by packing staff and only two quality inspectors are reported. Customization is broad, covering samples, designs, full customization, minor customization, and flexible customization. Service strengths include in-stock capability, stated lead times within 15 workdays in both peak and off-season, and multiple payment and quotation terms. Limitations include no overseas warehouse, showroom, agent, branch, or overseas service-country coverage, no Fortune 500 cooperation, no new products launched in the last year, one R&D engineer, no popular-brand OEM, and an undocumented corrective/preventive-action process. Financial credibility cannot be assessed because the provided financial figures are excluded from evaluation.

Supplier typeThe supplier is strongly export-oriented, reporting 90% export sales and 22 years of export experience. It can provide in-stock service and accepts FOB, CIF, CFR, and EXW terms, but reports no overseas warehouse, showroom, agent, branch, or overseas service-country coverage.

CertificationsThe supplier reports an ISO9001:2015 certificate for both sustainable development management and management systems, plus other product compliance or sustainability certifications. The specific additional certifications are not identified, so the evidence supports ISO9001 holding but not broader certification strength.

R&D capabilityThe supplier reports one R&D engineer and no new products launched during the previous year. It also reports no available SDK and no popular-brand OEM capability, which indicates limited documented innovation evidence.

Production capacityProduction-related evidence includes raw-material traceability, 100% finished-product inspection, quality assurance, four own-brand quality-control capabilities, inventory capacity, and lead times within 15 workdays in both peak and off-season. Only two quality inspectors are reported, and finished products are checked by packing staff, so production capability is positive but quality-control depth is limited.

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

Product Q&A

Q:How do you prevent quality issues?

Every batch undergoes documented inspections at critical stages: material intake, assembly line, and pre-loading, with certificates provided upon request.

Q:Is custom product development possible?

Our OEM/ODM capabilities include material selection, prototyping, and branded packaging. Submit your RFQ, and we'll handle the rest.

Q:What's your company's expertise?

Two decades of navigating global supply chains have honed our ability to source, inspect, and deliver industrial products with unmatched efficiency.

Q:What is the delivery time for custom orders?

Custom orders typically require 20-30 days for delivery.

Q:Do you provide samples?

Samples in stock are free, but freight charges must be collected from the buyer.