Our Comprehensive Washer Range

Explore our extensive selection of high-quality washers designed to meet international standards and your specific application requirements

Standard Washers

Flat, round, and square washers manufactured to DIN, ISO, and ANSI specifications

DIN9250 Washers

Split, tooth, and star washers designed to prevent loosening in vibration-prone applications

Lock Washers

Belleville, wave, and curved washers providing tension and shock absorption

NFE25-511 Washers

Bespoke washer solutions tailored to your specific engineering requirements

GB/T862.2 lock Washers

l-65MN Washers

Spring Washers

Custom Washers

DIN25201 Washers

Push-on Washers

Retaining Rings

External Circlip Rings

Why Choose Boltsourcing Fasteners?

Uncompromising Quality

Manufactured to meet stringent international standards (DIN, ANSI, ISO) ensuring reliability and performance.

Extensive Product Range

A comprehensive selection of standard and custom fasteners, including nuts, bolts, screws, and washers.

Custom Solutions

Tailored fastener solutions to meet your specific application requirements, from material selection to specialized coatings.

DIN 6798 External Tooth Lock Washer

Stainless Steel/Zn Plated - High-Performance Anti-Loosening Fastening Solution

The DIN 6798 serrated lock washer is a high-performance fastening component featuring precisely engineered internal teeth, designed to prevent loosening under dynamic loads and vibrations. Manufactured in accordance with the DIN 6798 standard, this washer ensures dimensional accuracy and consistent performance across various industrial applications. Available in carbon steel (zinc plated or galvanized), stainless steel A2/A4, and other corrosion-resistant alloys, it is ideal for use in automotive, machinery, aerospace, and electrical assemblies. The internal serrations create a strong locking effect between the washer and the fastener, distributing load evenly while enhancing grip and minimizing bolt fatigue. With excellent durability, reusability, and compliance with global quality standards (ISO, DIN), our Type J lock washers are trusted by professionals worldwide.

Product Advantages

Effective Anti-Loosening

Internal serrations bite into the mating surface to prevent fastener rotation under vibration or dynamic load.

High Strength

Made from hardened carbon steel or stainless steel (A2/A4), ensuring long-lasting tooth integrity.

Corrosion Resistance

Surface treatments available such as zinc plating, galvanization, or passivation for added durability.

Reusable Design

Maintains locking performance even after repeated assembly and disassembly.

Standard Compliant

Manufactured according to DIN 6798(J) and ISO standards for guaranteed quality and precision.

Improved Load Distribution

Serrations distribute clamping force evenly, reducing bolt fatigue and improving joint stability.

Application Scenarios

Automotive Industry

Used in brake systems, engine mounts, chassis fasteners, and vibration-prone components.

Machinery & Equipment

Ideal for securing rotating parts, motors, pumps, and gear assemblies.

Aerospace & Defense

Applied in structural and non-structural joints where vibration resistance is critical.

Electrical & Electronics

Common in enclosures, power distribution boxes, and control panels.

Industrial Automation

Ensures secure fastening in conveyor systems, robotics, and mechanical arms.

Renewable Energy

Used in wind turbines and solar panel assemblies requiring stable, long-term fastening solutions.

Common Materials and Their Applications in Industrial Components

Material	Description & Applications
65Mn Steel	High carbon steel with excellent hardness and wear resistance. Commonly used for springs, tools, and automotive parts requiring high strength and durability.
316 Stainless Steel	Austenitic stainless steel known for its exceptional corrosion resistance, especially in marine and chemical environments. Ideal for food processing, pharmaceuticals, and marine applications.
304 Stainless Steel	The most widely used stainless steel with good corrosion resistance, formability, and weldability. Commonly used in kitchen equipment, architectural applications, and chemical industries.
Carbon Steel (Q235)	Low-carbon steel with good weldability and strength. Widely used in construction, automotive, and manufacturing industries for structural components.
Alloy Steel (4140)	Medium-carbon steel alloyed with chromium and molybdenum, offering high strength and toughness. Common in manufacturing of shafts, gears, and heavy-duty machinery parts.
Brass	Copper-zinc alloy known for its machinability and corrosion resistance. Used in plumbing, electrical components, and decorative items.
Aluminum	Lightweight metal with good corrosion resistance, used in aerospace, automotive, and construction industries for components requiring strength-to-weight ratio.
Titanium	Known for high strength, low weight, and excellent corrosion resistance, especially in aerospace, medical implants, and high-performance applications.

Surface Treatment Process Selection Guide for Steel Washers

Surface Treatment	Description & Applications
Dacromet	A chrome-free zinc coating offering excellent corrosion resistance. Suitable for automotive and industrial equipment exposed to harsh environments.
Galvanizing (Zinc Plating)	Zinc coating applied through electroplating or hot-dip, providing strong corrosion protection. Common in construction, outdoor machinery, and pipelines.
Black Oxide (Blackening)	A chemical oxidation process that provides mild corrosion resistance and reduces light reflection. Used in tools, fasteners, and components where appearance is important.
Phosphate Coating	A conversion coating that improves adhesion for paints and coatings, and provides moderate corrosion resistance. Used in automotive parts, appliances, and machinery.
Electropolishing	An electrochemical process that removes a thin layer of metal to improve surface finish, corrosion resistance, and hygiene. Used in medical devices, food processing equipment, and high-purity applications.
Nickel Plating	A coating that provides excellent corrosion resistance, wear resistance, and aesthetic appeal. Used in electronics, automotive parts, and decorative items.

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