Wire diameter: Wire diameter (d)
Outside of diameter (O.D)
Inside of diameter (I.D)
Center diameter: Mean coil diameter (C.D)
Effective laps: Active coil Number (Na)
Total number of coils (Nt)
Free length: Free length (F.L)
Free height: Free height (F.H)
Volume direction: Winding
Right-handed: Right hand screw
Left-hand: Left hand screw
Material: Material
General steel wire: SWC
Piano wire: SWP-B (For press force)
SWP-A (For pull force)
Stainless steel wire: Stainless steel
Closed and ground
Surface treatment: Surface treatment
Low temperature heat treatment
Safety load: Total safe load
Load at pressing length
Rust oil: Preventing rust oil
Electroplating: Electroplating
Electrolysis: Electrolytic
Plating: Chroming
Galvanizing: Zinc-plating
Colorful galvanizing: Colored-plating
Black-dyeing: Black-dyeing
Paint: Paint drying
Passiveness: Passiveness
Permanent set
Slope: Rate (R)
Remove: Remove
Standing treatment: Setting
Stress relief: Stress relieve
Spring load per unit deformation produced by spring rate: Spring constant
Crush (pull, twist) processing
Open ends, not ground
Impact test: Impact test
Load: Load (P)
Rings: Loops
Modulus: Modulus
Open ends ground
Aluminum plate: Aluminum plate
Dongguan Spring Springs Electronics Co., Ltd. (SiS) was established in October 2011, specializing in the design, testing and manufacturing of spring finger & high-current connectors, and moved to Chang'an Town, Dongguan in May 2018. The company has CNC lathe workshop, spring finger workshop, assembly workshop, laboratory. Based on the increasing requirements of connectors for high-current connectors in various industries, Spring in Spring Electronics has developed a new type of bidirectional coil spring contact finger (SiS®) and single-turn spring finger , forming a number of array-type deformation contact points (up to more than 300 points). It can meet the service life of more than 100,000 times, the spring contact current density and temperature rise are close to the transmission cable, and the single-turn plugging force is about 5-10N. PCB board connector (board-to-board USC, board-to-wire), cylindrical quick-swappable self-locking connector (plastic and metal shell), male and female weight-load connector, electric vehicle charger, high-voltage power battery pack series connector, used in Z advanced high-current energy harvester, energy storage and electrical equipment,
For example: electric vehicles, charging base stations, wind energy generators, power supplies, high-speed rail, heavy trucks, etc. The company has a number of national invention & utility model patents, and the products have passed international standard testing.