carbon steel hinge spring

Quick Details
Place of Origin:
Zhejiang, China (Mainland)
compression spring
Load Type:
white zinc coating
QC report, material report
ISO9001, RoHS

Supply Ability
Supply Ability:
100000000 Piece/Pieces per Year
Packaging & Delivery
Packaging Details
OPP bags + blank carton
Carton size: 23*23*31/cm or 50*25*35/cm
Wooden cases for sea shipping.
Shanghai, China; Or Ningbo, China;
Lead Time :
Quantity(Pieces) 1 – 10000 >10000
Est. Time(day) 30 To be negotiated

Product Description


RoHS electrical contact spring 

Material carbon spring steel
Specification customized
End Type close and flat ground
Surface Treatment Electroplating
Wire Dia. Option Wire diameter ranging from 0.08-12.0mm
Material Option

Stainless steel:

SUS301(1.4310), SUS302(1.4307), SUS304, SUS316, SUS631(17-7ph), X-750
Carbon steel: SWC-72A,SWC-65Mn, 82B, 60Si2Mn, 55CrSi(55SiCr),SAE1070,

SWPB(Music wire), EN10270-1 SH, DIN 17223, ASTM-A228 .etc
Copper/Brass: Brass(CuZn36,CuZn40),copper(C1100), phosphor bronze  copper(CuSn6), beryllium bronze copper,enamelled wire .etc
Alloy: titanium alloy etc.

Surface finish option

 Prevent Rust oil, Black-dyeing, Paint drying, electrophoresis, Electroplatingzinc platingNickel platingchrome plating, galvanization, passivation, ultrasonic washing, phosphorization, dacromet, teflon coating,

environmental protection plating with ROHS testsalt spray test etc


Auto Motive: Aviation, automotive, motorbike, bicycle.

Industrial Precision Equipment: automatic equipment, medical device, toy, mold, and other industries.

Electrical & Home Appliance: household appliance, circuit board, computer, instrument, furniture, telecommunication, electric tools, etc.


1. Drawings-Guide production Management among all the trading process.

2. Raw Material ROHS certification

3. Stable Supplying Chain & Sales Scale

4. Famous Brand Certificate in the district Wenzhou

5. Above all, great wish to cooperate with client

Factory Equipment CNC spring formers, tempering furnace, end grinder, shot-blasting, lathes, millers, punches etc.
Testing Machines Projector, digital hardness tester, digital torsion strength tester. digital tension and compression strength tester. elasticity tester. life tester, salt spray test machine etc.
Quality Control

1. PPAP.APQP,SPC,FMEA,MSA  quality management.

2. Tolerance control: DIN, JIS Standard.

3. Raw Material: all material can have ROHS certification

4. Production Procedure: 7 times Inspection before delivery, Welcome Quality inspection from your side before delivery.

5. Traceable management throughout all process from raw material to customers.

Certification ISO9001,TS16949, ROHS

ATTN: Read This Before Buying 

A. Due to the internet and computer display solutions. The actual products may differ from

the pictures. Please contact our salesmen for further assistance.

B. Our products can be made in customized demands.

C. We appreciate Drawing-Guide Trading, Please send us drawing as possible as you can when you inquiry.

D. We appreciate your inquiries and you are welcome all the time!

carbon steel hinge spring

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