M2.5/M5 Color Customized Zinc-Plated DIN 250 Plain Washers Factory Directly Flat Gasket Washer

A gasket is a mechanical seal between two objects, typically used to prevent leakage from pressure, corrosion, and the natural expansion and contraction of the pipe between them.Since machined surfaces cannot be perfect, irregularities can be filled with gaskets.Gaskets are usually made of sheet materials such as pad, rubber, silicone rubber, metal, cork, felt, neoprene, nitrile rubber, glass fiber, or plastic polymers (such as Teflon).Gaskets for specific applications may contain asbestos.
Washer is a hole in a thin (usually round) plate (usually in the middle) that is usually used to distribute load thread fasteners.Other uses are as spacers, springs (Belleville gaskets, wave gaskets), wear pads, pre-display devices, and locking devices.Rubber gaskets are also used in faucets (valves) to cut off the flow of liquid or gas.Rubber or silicon gaskets can also be used to reduce fan vibration.Usually the outer diameter of the gasket is about twice the inner diameter.

Marking of Small Series (or Standard Series), Nominal Size D =8mm, Performance Class 140HV (or Flat Washer, or chamfered Flat Washer), without surface treatment: Washer GB848-85-8-140HV (or GB97.1 -- 85-8-140HV

1. Certification: ISO, ROHS, SGS
2. Available Standard: DIN, ANSI, ASTM, JIS, BSW
3. Strength: Grade 4.8,Grade 8.8,Grade10.9,Grade12.9 A2-70, A4-70, A4-80

4. Finishing: Yellow, blue, white zinc plated, Galvanized,HDG,Chromate,Dacromet
5. Available material: Carbon steel, stainelss steel SS304, A2 ,Stainless steel SS314,A4.
6. Size: M2-M100, Length: 5-300mm, Moq: 500pcs, Port: Shenzhen, Shanghai
7. Available Packing: Plastic bags+Chipboard Cartons+Plywood pallet with Belt &Film.

Packing & Shipping

Package details:

1) Sample order, 20/25kg per carton with our logo or neutral package;

2) For Large orders, we can custom packaging;

3) Normal Packing: 1000/500/250pcs per small box. then into cartons and pallet;

4) According to customers' requirements.

FAQ

1.How do you let me trust you?
We are a Golden supplier in Alibaba who do business for more than 5 years. You can make an order by Alibaba to us directly.

2.How about your price?
High-quality products with a reasonable price suitable for your market.

3.How do you control your quality?
We request a QC inspection for each batch of goods. And we can provide you inspection report and mill certificate if you want..

4.Could you provide free samples?
For new customers, We can provide free samples for standard fasteners. But the clients will pay the express charges. For regular customers, We will send you free samples and pay express charges by ourselves.

5.How about your delivery time?
Generally speaking, All the goods have stock with little quantity, we can delivery them with one week. If the quantity is 1-2container, we can give you with 30-45days.

6.What is your packing?
Our packing is 20-25kg for one carton,36 or 48pcs cartons for one pallet. One pallet is about 900-960kg, We also can make the customer's logo on the cartons. Or we customized cartons according to customers' requirement, If you need small box packing, we can do according to your requirement.

7.What is your payment term?
We can accept T/T,LC for general order. For new customer, we request 20%-50% T/T in advance, and balance payment should against B/L copy. For regular customer, we can provide delay payment after B/L date about 30-90 days
.

Thread Specification d		Φ3	Φ4	Φ5	Φ6	Φ8	Φ10	Φ12	Φ14	Φ16	Φ18	Φ20
d	Min	3.2	4.3	5.3	6.4	8.4	10.5	13	15	17	19	21
d	Max	3.38	4.48	5.48	6.62	8.62	10.77	13.27	15.27	17.27	19.33	21.33
dc	Max	8	10	12	14	18	22	28	28	34	40	40
dc	Min	7.64	9.64	11.57	13.57	17.57	21.48	27.48	27.48	33.38	39.38	39.38
h	Max	0.55	0.9	1.1	1.8	2.2	2.7	3.3	3.3	3.3	4.3	4.3
	Min	0.45	0.7	0.9	1.4	1.8	2.3	2.7	2.7	2.7	3.7	3.7
	Nominal	0.5	0.8	1	1.5	2	2.5	3	3	3	4	4