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Your Professional Concave And Convex Washer Manufacturer

Wuxi Lemar Metal Products Co., Ltd. is a professional fastener system service group integrating scientific research, manufacturing, sales and logistics. It follows the business philosophy of "striving for excellence and adhering to integrity" and has established a good image in the field of fastener manufacturing and sales. It has established long-term cooperative relationships with major well-known logistics brands at home and abroad to ensure that products are delivered to customers at the fastest speed and are well received by users.

Steel Spherical Washer
No.:LM-1253. Product Name:Concave And Convex Washer. Material:Carbon Steel/304 Stainless Steel. Application:General Industry
Conical Seat Washer
No.:LM-1252. Product Name:Concave And Convex Washer. Material:Carbon Steel/304 Stainless Steel. Application:General Industry

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Why Choose Us

Technical team support
Possess full process manufacturing capabilities and experimental research and development capabilities for fasteners. With strong technical strength and 3D marketing network, it has more than 100,000 enterprise-level users and serves 57 industries.

Production Equipment
Our company has cold heading machines, thread rolling machines, wire drawing machines, thread rolling machines, tapping machines, vibration plate automatic assembly and other processing and feeding equipment.

Sales Market
Lemar Assisting scientific research enterprises,exported to Europe,North America, Africa, Central Asia, Middle East.

Concave And Convex Washer - Overview

Concave and convex washers are specialized washers used to ensure proper clamping force when attaching components on non-parallel surfaces. Concave washers have a curved, inward-facing surface, while convex washers have a curved, outward-facing surface. When used together, they compensate for misalignment and allow for a more secure and even clamping force, even on surfaces that are not perfectly flat or parallel.

Product Specification

We provide the following product specifications：

Material	‎Titanium
Outside Diameter	‎12 Millimeters
Washer Type	‎Flat
Exterior Finish	‎Titanium
Fastener Size	‎M6
Item Thickness	‎3 Millimeters
Size	‎M6
Metal Type	‎Titanium
Color	‎Black
Number of Pieces	‎4
Item Diameter	‎12 Millimeters
Head Style	‎Concave/Convex
Fastener Type	‎Flat Washer
Grade Rating	‎Grade 5
Compatible groove diameter	‎7 Millimeters
Item Package Dimensions L x W x H	‎2.36 x 2.13 x 0.28 inches
Package Weight	‎0.02 Kilograms
Included Components	‎Concave washers, Convex washers

Common types

Steel Spherical Washer

Steel Spherical Washer‌ has a backstopping effect by applying axial stress on the bolt, increasing the friction force and preventing the coupling from loosening.Steel Spherical Washer is spherical, which can better adapt to uneven surfaces and reduce friction and pressure concentration. Spherical washers are often used to protect the surface of the connected parts from damage, can disperse the pressure of the nut on the connected parts ‌.

Conical Seat Washer

Conical Seat Washer is the part used between the fitting and the nut. When the cone washer is fastened, the axial stress of the bolt increases the friction between the threads, making the object to be fastened not easy to loosen.Generally made of high-quality stainless steel or iron and other metal materials, with high strength and corrosion resistance.

Product advantages

Strength standard

Metal gaskets need to meet certain strength requirements to ensure that they are not deformed or damaged when connected.

Corrosion resistance standard:

Metal gaskets need to have a certain corrosion resistance to adapt to various harsh environmental conditions.

Temperature resistance standard

Gaskets need to have a certain temperature resistance to ensure that they can still work normally in high or low temperature .

Material of Concave And Convex Washer

☆Steel: Common choices include carbon steel, spring steel, and stainless steel (A2 and A4).

☆Non-ferrous metals: Copper, brass, aluminum, titanium, iron, bronze, and zinc can also be used.

☆Galvanized concave washers: Often made of carbon steel and stainless steel.

☆Convex washers: Typically made of hardened or stainless steel.

☆DIN 6319: These washers can be made from technopolymer with stainless steel inserts, or entirely from AISI 303, 304, or 316 stainless steel.

Customization Process

Requirement Discussion

Design Proposal

Our professional team will develop a design proposal and provide a quotation based on your requirements.

Sample Production

We produce samples according to the design proposal and conduct rigorous testing.

Mass Production

Upon your approval, we commence mass production to ensure timely delivery and consistent quality.

After-Sales Service

We offer ongoing technical support and service to ensure the long-term stable operation of our products.

Other Services

Surface treatment: Plain, Galvanized, Hot Dip Galvanized, Black Oxide, Anodized, etc.
Excellent quality control system for fine dimensional accuracy.
Various materials are available as per your request
Conform to international standard.
We had got certificate of ISO9001: 2008, SGS & RoHS.
Prompt delivery.
Various sizes are available.
Material: Stainless Steel 18-8 18-10, Carbon steel Gr4.8 Gr8.8 Gr10.9, Gr12.9, Aluminum, Copper, etc.
Packing Stylet: General export packing
Can be made with different standards such as ISO, DIN, AS/NZS, GB, ANSI, BS and special standard.
Good customer service
OEM is available

Package & Delivery

Package Size:	10.00cm * 10.00cm * 10.00cm
Package Gross Weight:	5.000kg

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FAQ

Q: What is a concave washer used for?

A: A cup washer is a small lightweight washer with a concave shape that serves as an insulative, decorative, and supportive accessory for bolts and screws. They feature a bowl-like central depression that allows for a snag-free grip when tightening a bolt or a screw head.

Q: Which way do concave washers go?

A: Place the spring washer under the threaded fastener in place, with the concave side of the washer facing the flange or bearing surface. The convex side of the washer should make contact with either or both of the nut and the bolt head.

Q: Why use a spherical washer?

A: Spherical washers are washers that have a spherical surface. The spherical surface distributes the load evenly over a larger area, which can help to reduce stress on the fastener and prevent it from loosening.

Q: What does a concave washer look like?

A: This Galvanized Concave Washer comes with a concave structure. It looks like a big bowl which is also called bowl washer. It's generally made of carbon steel and stainless steel. The sizes can be from 4mm to 36mm or according to customer requirements.

Q: Are you manufacturer or trading company?

A: We are manufacturer.

Q: What's your best delivery time?

A: Within 15-30 days.

Q: What is the quality control of your product?

A: Follow strictly quality control measures for implementation,

Q: Will your company provide free sample?

A: It depends on which sort of item you want to get. Some can be provided free of charge, however, the client shall assume the shipping fees himself.

Q: Is OEM open to clients?

A: Yes, we can provide both OEM and ODM service.

Q: How can our company be your distribution partner?

A: We welcome you to be our distributor. For further details, please contact us.

Q: What is the payment of sample?

A: T/T and Alipay both acceptable.

Q: What is your sample policy?

A: If we have stock, we can provide samples, but the customer must pay the sample fee and express fee Question.

Q: Have you tested all your goods before shipment?

A: Yes, we will conduct 100% test before delivery, and we will send detailed photos of parts for your approval Question.

We're well-known as one of the leading concave and convex washer manufacturers and suppliers in China. If you're going to wholesale high quality concave and convex washer made in China, welcome to get pricelist and free sample from our factory. Also, OEM service is available.

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