Zhejiang facgtory nut bolt copper washer assortment

$1.00 - $5.00
Min. Order
5000 Sets
Company Information

Zhuji Bofit Machinery Co., Ltd.

CN Manufacturer, Trading Company
Response Time
Response Rate:
US$ 70,000+
5 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
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Quick Details

Port: Ningbo/Shanghai
Payment Terms: L/C,T/T,Western Union
Supply Ability: 5000000 Piece/Pieces per Month nut bolt copper washer assortment
Place of Origin: Zhejiang China
Brand Name: Bofit
Model Number: different sizes
Standard: ISO
Finish: Black,ZINC,Plain
Style: spring washer
Material: spring washer
Application: spring washer
Name: copper washer
Size: all sizes can make
Application: sealing
Packing: poly bag
MOQ: 5000 pcs
OEM: available
Delivery time: Within 25days after receiving the deposit
Packaging Detail: For nut bolt copper washer assortment:Poly bag and carton packing or meeting customer&#39;s need.

Copper washer:

Product details:


nut bolt copper washer assortment








150PC,110PC,220PC,538PC ect




can make all sizes customer need




Poly bag and carton packing or meeting customer's need.



Within 25days after receiving the deposit


*Recheck moulding before mass production

*Random quality test during production process

*Test HRC before and after heat treatment

*After surace finishing,check surface before packing one by one to ensure no defect exsist in finished products

*Inspect finished products,measure size,application test ect



Q: Are you factory or trading company?

A: We are factory.In fact we are made of two factories.One is Zhuji city Ruitong machinery Co.,ltd.The other is Zhuji Bofit machinery Co.,ltd,So we have good capability to produce different types of goods.

Q: What's your main products?
A: Our main products is lubrication tools,gas boilers,auto tools and hardware.Lubrication tools we have more than 30years experience and exported to more than 40 countries.Gas boilers we made 6 years which is cooperated with Germany company.

Q:Are you new factory?

A:Although Bofit founded in 2015,but it is old factory.Just we have new plant and new products so we have this new factories.In fact we have long history.

Q: Which shipping way will you use for the products?
A: For light weight or small, we will use international express, such as TNT, DHL, UPS, FEDEX etc. it always requires 3-5 days and can be reached according to your area, For heavy weight and large size, we would recommend that you take by sea way.

Q: What's your payment terms and delivery date?
A: T/T,L/C,Western union,Paypal,etc. The delivery date depends on your order. Delivery date is 7-25 days. If you need emergency products, we can speed up the production of the first arrangement.

Q: What equipments do you have?

A:  With automatic assembly lines for gas boilers,60 automatic lathes,20 normal lathes,12 thread rolling machines, 5 CNC, 2 laser cutting machines, 5 punching machine,pressure testing machine and salt spray testing machine.

Company Information



History of Plant: 

Located in Diankou Industrial Zone.

Year 1980's Mr Chen has built a factory making brass fittings,mechanical parts,mainly serving the factories in China

Year 1995 Mr chen started sold products to overseas through trading company.The company name was Zhuji Leon Machinery Facotry.

Year 2000 Ruitong Machinery was founed in order to face the international trading needs.Soon Ruitong Machinery gain the self-export certificate from government.

From year 2000 Till now,Ruitong Machinery has exported products to many countries all over the word.The products lines are expanded.


Quality Assurance: 

Ruitong Machinery Since has been established,in line with "Quality First,Prestige First"objective. We has madestrict quality standard at every level of production,from raw material to ready-made goods.






Our Services

(1) We have the ability to produce any fittings according to your mechanical drawing or sample.


(2) We use the most highly advanced equipment on the market to process raw materials.


(3) We are professional manufacturer of china fittings in China had over 10 years.


(4) We have the ability to use English, Japanese, Chinese, and other languages to communicate with customers.


(5) Our Company fittings represent a high quality of products thanks to an implemented quality management system according to ISO 9001:2008.


(6) We are equipped with more than 60 sets of machines and equipment, such as: CNC lathes, CNC milling machines, Jig grinders, punching machines, drilling machines, EDM machines, jig grinders, ID/OD grinders, surface grinders, and various other grinders, saws and inspection equipment etc.


(7) Reasonable price and higher quality because we have rich experience production workers and professional engineers and strong raw material purchasing team.


(8) Excellent sale service in time for both before-sale and after-sale by Email, Telephone and face to face.



Process flow

process flow.jpg



Packaging & Shipping


OEM Packing 

We can make customer's brand packing and we will protect your brand,will not show others' your packing.

About package

1.After order is placed,we will confirm with customer all the printing details including box design,shippment mark,pallet mark ect 2.All insturction will be follow during the order is produced 3.Before shippment,we will take photoes for customer for approval 

About Shippment

Shipments for small sample order are via DHL,TNT,UPS, or Fedex etc ,normal order is Via Sea from ningbo port or shanghai port.If you need other port,you should tell us before ordering as the cost is different.

About the delivery time

Standard lead time is about 7-30 days or according to the order quantity

We provide both quality product and good service, ensuring an excellent customer experience. We are committed to solve any problem associated with our products. We are looking forward to the opportunity of serving you.