is_customized : YesModel Number : M3 M4 M5 M6 M8 M10DIY Supplies : MetalworkingOrigin : Mainland ChinaCertification : NONEName : Countersunk washer gasketName: conical gasketMaterial: 304 stainless steel/scm435 steelType: GasketSize: m3-m10(The specification with flat or cone is 304 stainless steel )(The specification with steel is SCM435 steel )Packing instructions: plastic bag + cartonThe following data were measured manually in a single batch with errors. Please be carefulFAQ1.We are factory,wholesalers and retailers are welcomed.For wholesale,we will offer or free express shipping which only takes short time to arrive.If you are a retailer andwant make your own business, we could send the goods to your customersdirectly and won't leave information about us if you'd like to.2.What should I do if I don't receive my item?Please contact us first, we will track your item. If you can't receive it, we will full refund or resend it foryou. We are honest seller, so don't worry.3.If the products have problems how to do it?Please contact with us in time, we will help you solve it.Fast shippingWe try our best to deliver within 24 hours as soon as you place an order, it may need more time during holiday.About shipping to choose:There have been serious delays or easy to lose in parcels from economy shipping channels. Please try to choose the following logistics channels:After ServiceIf there is a product quality problem, we will provide you with a refund service as soon as possible, please rest assured to buy.If you have any questions about the product, please contact us in time.It is our service tenet to provide God-like service to customer service.If you are satisfied with our products and services, please give us a five-star feedback so that we can give me greater motivation.We sincerely want every customer to have a great shopping exprience in our aliexpress.