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 Flat washer

Flat washer

flat washers are widely used as essential fastening components that improve assembly reliability and protect delicate structures. they are typically applied under housing screws to distribute clamping force, preventing plastic or aluminum enclosures from cracking or deforming under long-term stress.

Flat washer advantages

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Even Load Distribution

Flat washers help spread the load of a fastener evenly over a larger surface area, preventing damage to the material and extending the lifespan of assemblies

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Friction Reduction

By reducing direct contact between the fastener and the material, flat washers minimize friction during tightening, ensuring smoother and more consistent assembly.

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Surface Protection

They protect the underlying surface from scratches, dents, or wear caused by the turning of nuts or bolts, maintaining the integrity and appearance of the workpiece.

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Secure Fastening and Alignment

Flat washers help maintain the stability of fastened joints and can compensate for minor surface irregularities or misalignments, ensuring a reliable and durable connection.

Mengpeng makes controlling shafts effortless, unlocking limitless application possibilities.

Focusing on carbon steel shaft gaskets, Mengpeng makes shaft control a breeze, helping customers expand into more innovative application areas.
Flat Washers

Flat Washers

Outer Diameter (OD)1.7 – 24 mm
Inner Diameter (ID)0.82 – 12.05 mm
Thickness0.5 – 1.5 mm

Material

65Mn / SK5 / SK7  
Hardness (HRC)43 – 50
Surface TreatmentEnvironmental Nickel, Chemical Nickel, Black Oxide, Zinc-Nickel Alloy

Nylon Flat Washers are lightweight, durable, and corrosion-resistant components designed to distribute load, protect surfaces, and enhance mechanical stability. Commonly used with bolts, screws, and rotating parts, these flat washer nylon components provide low friction, electrical insulation, and excellent wear resistance. Available in multiple specifications—including nylon washers, thin nylon washers, and custom flat washers—they are ideal for precision assemblies that require smooth rotation, strong connections, and long service life. They are especially suitable for hinges and rotating shafts, where rotational feel, stability, and durability are critical to performance.

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Mild Steel Washers

Mild Steel Washers

Outer Diameter (OD)1.7 – 24 mm
Inner Diameter (ID)0.82 – 12.05 mm
Thickness0.5 – 1.5 mm

Material

65Mn/SK5/SK7  
Hardness (HRC)43 – 50
Surface TreatmentEnvironmental Nickel, Chemical Nickel, Black Oxide, Zinc-Nickel Alloy

Function

Participates in the friction of moving parts and generates torque

Mild steel washers are stamped flat parts made of low-carbon steel. Low carbon brings good ductility for stamping and compression without cracking. They are fitted on laptop hinge screws, smart watch internal modules, PCB control terminals and auto electronic sensor bases to spread screw pressure and prevent loose connections inside electronics.

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shaft washer

shaft washer

Outer Diameter (OD)1.7 – 24 mm
Inner Diameter (ID)0.82 – 12.05 mm
Thickness0.5 – 1.5 mm

Material

65Mn/SK5/SK7  
Hardness (HRC)43 – 50
Surface TreatmentEnvironmental Nickel, Chemical Nickel, Black Oxide, Zinc-Nickel Alloy

Function

Participates in the friction of moving parts and generates torque

Shaft gaskets are ultra-thin precision flat washers designed to adjust rotating shaft clearance, filling assembly gaps to reduce friction and stop axial wobble. Main electronic application scenarios include notebook screen hinge spindles, foldable Bluetooth earphone rotating parts, mini surveillance camera motor shafts, handheld beauty equipment rotary cores and small blender drive shafts, keeping steady rotation after frequent use. 

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Nickel Gasket

Nickel Gasket

Outer Diameter (OD)1.7 – 24 mm
Inner Diameter (ID)0.82 – 12.05 mm
Thickness0.5 – 1.5 mm

Material

65Mn/SK5/SK7  
Hardness (HRC)43 – 50
Surface TreatmentEnvironmental Nickel, Chemical Nickel, Black Oxide, Zinc-Nickel Alloy

Function

Participates in the friction of moving parts and generates torque

Nickel gaskets are high-carbon steel flat washers finished with nickel plating for outstanding anti-rust and wear resistance. They create steady friction torque and are widely fitted on printer rotating shafts, camera hinge parts, medical micro drive assemblies and precision electronic control knobs to deliver smooth rotation and stable fastening under humid working conditions.

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Flat washer

Flat washer

Outer Diameter (OD)1.7 – 24 mm
Inner Diameter (ID)0.82 – 12.05 mm
Thickness0.5 – 1.5 mm

Material

65Mn/SK5/SK7  
Hardness (HRC)43 – 50
Surface TreatmentEnvironmental Nickel, Chemical Nickel, Black Oxide, Zinc-Nickel Alloy

Function

Participates in the friction of moving parts and generates torque

Unlike regular spacer washers only for load dispersion, our precision Flat Gasket adopts tempered high-carbon steel to generate controllable friction torque while leveling assembly clearance. Tailored for compact electronic rotating structures, it fits laptop hinge spindles, camera zoom shafts, PCB adjustable knobs and small household appliance motor cores to eliminate jitter and deliver consistent smooth rotating feel after millions of twists.

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Custom Flat Washers

Custom Flat Washers

We offer custom flat washers in various materials, including stainless steel, carbon steel, brass, copper, aluminum, nylon, and other engineering plastics. Customers can specify inner diameter, outer diameter, thickness, tolerance, hardness, and surface finish according to their project requirements. Additional options such as zinc plating, nickel plating, black oxide, passivation, and custom coatings are available to improve corrosion resistance and durability.

For electronic products, custom flat washers can be manufactured with precise dimensions to fit PCB mounting points, enclosure assemblies, grounding connections, and precision fastening systems. 

Key Benefits

  • Custom sizes and thicknesses

  • Multiple material options

  • Precision stamping and CNC machining

  • Corrosion-resistant surface treatments

  • OEM & ODM support

  • High-volume production capability

  • Strict quality inspection and dimensional control


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Applications

Spacer washers are widely used in aerospace, medical equipment, machinery, consumer electronics, furniture and home appliances, automotive, and other industries.

Limit Stop Washer in Medical Equipment
Cam Washer in Smart Home and Appliance Applications
Spring Washer in Industrial Machinery
Friction Hook Washer in Automotive Electronics

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Why Choose Us

Extensive Industry Experience

With 18 years in the shaft components industry, Mengpeng covers 80% of market demand and serves over 800 clients, including renowned brands like Huawei, Lenovo, Mindray, and Volkswagen.

Wide Product Range

Offers seven major categories of shaft washers, T-shaped shafts, and standard nuts, with a total of 1,700 specifications to meet diverse industry needs.

High Precision and Efficiency

Washer tolerances are accurate to 0.03–0.05mm. Annual production exceeds 600 million pcs, with a daily output of 3 million pcs. Large stock ensures fast order fulfillment.

Cost and R&D Advantages

Sufficient inventory and standard parts support clients in accelerating new product development, reducing time and cost.

Precision Driven, Intelligent Manufacturing for the Future
Making every rotation smoother and every detail more precise—follow Mengpeng Hardware to explore more possibilities for shafts.


Need assistance? Call us at [+86 189 8870 2500] or email [sale1@mphardware.com].
Buyer Requirements
Deep Industry Expertise: Over 18 years of specialization in the Custom shaft components industry, covering 80% of market demand and serving 800+ clients across multiple sectors.
Custom shaft components

We provide comprehensive customization services for materials, dimensions, tolerances, and surface treatments to meet the high-standard requirements of industries such as consumer electronics, medical devices, and automotive.

Fast Delivery and Inventory Support

With a stock of 90 million standard parts, we support same-day order placement and next-day delivery, ensuring smooth production schedules and minimizing waiting times for our customers.

Technical Support and Solutions

We offer product selection guidance, process optimization, installation assistance, and application solutions to help customers improve R&D efficiency and reduce production risks.

High-Precision Quality Assurance

Washer tolerances can be controlled within 0.03–0.05mm (Higher precision can be achieved at 0.01-0.02mm.), supported by a complete inspection system to ensure every batch of products is stable, reliable, and compliant with industry standards.

FAQs

How is the precision and stability of the axles ensured?

MengPeng employs advanced production processes and precision testing equipment, with each batch undergoing strict dimensional and performance inspections. We adhere to standardized manufacturing processes and quality management systems to ensure every axle meets high customer standards.

Which industries are Pengmeng’s axle products suitable for?

Our axles and axle washers are widely used in automotive components, power tools, smart home devices, machinery, and various precision instruments. With years of technical experience, we strive to enable high-precision and high-reliability applications of axles across more industries.

Where does the flat washer go on a screw?

The flat washer is placed between the screw head (or nut) and the surface of the part being fastened.
This positioning ensures that the load is evenly distributed and the surface is protected.
If used together with a spring washer, the correct order is:

Bolt head → Flat washer → Spring washer → Nut

What does a flat washer do?

A flat washer serves several important purposes:

  • It spreads the load of a bolt or nut over a larger area, reducing surface pressure.

  • It prevents damage or deformation of the material being fastened.

  • It helps reduce friction during tightening and improves the life of both the fastener and the assembly.


What is a flat washer?A flat washer is a thin, flat, round piece of metal or plastic with a hole in

A flat washer is a thin, flat, round piece of metal or plastic with a hole in the center, used to distribute the load of a threaded fastener such as a bolt or screw. It provides a smooth bearing surface, prevents surface damage, and improves the stability of the fastening connection.

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