Custom Music Wire Double Torsion Spring Nickel Plated Dual Coil U-Shaped Clamping Torsion Spring for Stationery Clip Use
| MOQ: | 1000 Pcs |
| Price: | Price Per Inquiry |
| Packaging: | Standard Export Packaging |
| Lead Time: | 7-15 Days |
| Payment Method: | T/T |
| Supply Capacity: | 1000000 Pcs / Month |
As a reliable OEM manufacturer with complete custom service, we produce premium music wire double torsion spring, also named dual coil U-shaped clip torsion spring. This custom clamping torsion spring is constructed with two independent 4-turn coil bodies connected by a U-shaped hanging arm, matched with two bent clamping ends, specially designed to deliver lasting consistent clamping force for stationery clip and multi-scene clamping structures.
Our whole manufacturing process uses dedicated CNC torsion spring machines for one-step forming: integrated coiling of dual coil torsion spring bodies, synchronous bending of U-shape hook and clamping arms. After high-temperature tempering to eliminate internal stress, all wire ends are chamfered and deburred. Workpieces go through ultrasonic degreasing, acid activation before electroplating, then lead-free environmental bright nickel plating. Every nickel plated clip torsion spring undergoes 100% full inspection of torque, dimensional tolerance and plating surface defects. Our factory supports OEM customization according to customers’ technical drawings or physical samples to satisfy various clamping equipment assembly demands for global buyers.
| Product Name | Dual Coil U-Shaped Clamping Torsion Spring |
|---|---|
| Raw Material | SWP-B Music Wire / Piano Wire (High Carbon Spring Steel, Non-Stainless Steel) |
| Wire Diameter | 1.8mm |
| Coil Configuration | Dual independent coils, 4 turns per coil |
| Single Coil Outer Diameter | 9.2mm |
| Structural Design | U-shaped connecting arm + double clamping force arms (all arm lengths, angles customizable) |
| Surface Finish | Lead-free & Cadmium-free bright nickel electroplating, environmental anti-rust coating |
| Dimensional Tolerance | ±0.03mm for all structural sizes |
| Clamping Torque Tolerance | ±6% |
| Core Production Process | CNC integrated dual-coil coiling & multi-arm bending, high-temperature stress relief tempering, end chamfer deburring, ultrasonic oil cleaning, electroplating activation pickling, eco bright nickel plating, full finished product inspection |
| Performance Feature | High tensile strength, anti-fatigue for tens of thousands of opening & closing cycles, no permanent deformation |
This music wire double torsion spring, nickel plated clip torsion spring and stationery clip torsion spring is widely applied in civilian clamping assemblies:
- Office stationery clips, document binder clips, notebook fixing clips
- Plastic packaging clamping buckles for cosmetic, gift and daily goods boxes
- Household storage box, drawer and basket clamping latches
- Small consumer electronics plastic shell fasteners
- Handicraft and toy reset clamping components
- Light medical disposable clamping fittings
- Kitchen small gadget rotating clip reset mechanisms
As a professional custom clamping torsion spring manufacturer, we deliver one-stop OEM custom service for all dual coil torsion spring products:
- Custom manufacture music wire double torsion spring based on customer drawings, physical samples or parameter lists
- Fully customizable wire diameter, coil turns, coil OD, U-arm length, clamping arm length & bending angles
- Optional material upgrades: stainless steel wire, alloy spring steel on request
- Multiple surface finish options: bright nickel plating, matte nickel plating, extra passivation layer
- Custom neutral packaging and private label marking for bulk OEM orders
- Low-volume pre-production prototype samples before mass production
- Flexible MOQ, support small trial batches and large wholesale orders
- SWP-B music wire + high-temperature tempering: Solves weak clamping force, fatigue softening and permanent deformation issues of ordinary custom clamping torsion spring after frequent opening/closing
- Dual-coil integrated CNC forming: Avoids uneven coil size, asymmetric arms and unstable clamping force of manually bent music wire double torsion spring
- Lead-free eco bright nickel plating: Fixes rusting, short service life and heavy metal compliance risks of unplated or low-quality nickel plated clip torsion spring
- Full wire end chamfer deburring: Eliminates sharp burrs that scratch assembly workers and scratch matching plastic/metal clip housings
- Pre-plating acid activation treatment: Improves nickel coating adhesion, prevents peeling and discoloration during long-term use of stationery clip torsion spring
- 100% full inspection for torque & dimensions: Eliminates inconsistent clamping force between batches, reducing assembly scrap and product failure complaints
- Raw material incoming test: Hardness, tensile strength and chemical composition inspection for SWP-B music wire
- Real-time dimensional spot check during CNC dual coil torsion spring coiling and arm bending
- Furnace temperature monitoring for high-temperature tempering to ensure complete stress relief
- Ultrasonic cleaning cleanliness test to remove all processing grease residue
- Electroplating layer thickness and adhesion test for nickel plated clip torsion spring
- Salt spray aging test to verify anti-corrosion performance of environmental nickel coating
- Final full inspection: All finished items test dimension tolerance, clamping torque, surface scratches and plating flaws
- Cyclic opening-closing fatigue test to confirm long service life for stationery clip torsion spring
A1: Yes, we are an OEM manufacturer with full custom service, all coil and arm parameters of dual coil torsion spring can be modified per your drawings or samples.
A2: Prototype samples take 4–6 working days; mass OEM bulk orders take 9–15 working days based on order quantity.
A3: Our bright nickel coating is lead-free and cadmium-free, fully compliant with global import environmental regulations for stationery and consumer goods.
A4: No rigid high minimum order quantity, small trial sample batches are supported for custom project testing.
A5: Yes, dimension, clamping force and anti-rust test reports are available upon request for large OEM orders.
