· Product Overview

· Core Specifications

• Material: 304 Stainless SteelOffers excellent corrosion resistance (suitable for indoor/outdoor mild-moisture environments) and balanced elastic strength for small-scale torsion applications.
• Manufacturing Standard: ISO 9001-Certified Spring Fabrication Process
  • Key Processes: Cold coil winding (for uniform core geometry), precision hook arm forming (to match mounting interface angles), heat tempering (stabilizes torque and fatigue resistance), and surface passivation (enhances corrosion protection).
  • Tolerances: Wire diameter ±0.03mm, coil diameter ±0.1mm, hook arm length ±0.5mm, torque output ±5% (at specified twist angle).

· Application Scenarios

• Electronic Devices: Switch mechanisms (e.g., toggle switches), battery compartment latches, and small sensor pivot components.
• Hardware & Locks: Cabinet door latches, keyed lock return springs, and hinge pivot tensioners.
• Toys & Hobby Kits: Mechanical toy pivots (e.g., wind-up toys), model vehicle hinge components, and craft mechanism returns.
• Medical & Lab Equipment: Small diagnostic tool latches, sample tray pivots, and precision instrument return springs.
• Stationery & Small Tools: Clip mechanisms (e.g., binder clips), utility knife blade retractors, and small tool hinge tensioners.

· Production Process Introduction

1. Raw Material Preparation: Source 304 stainless steel wire (consistent fine diameter matched to the spring’s compact design).
2. Cold Coil Winding: Use automated micro-spring winding machines to form the tight, uniform core coil (optimized for controlled torque output).
3. Hook Arm Forming: Shape dual angled hook arms (via precision tooling) to align with target mounting component interfaces.
4. Heat Tempering: Temper the spring in a controlled low-heat oven to set elastic tension and enhance fatigue resistance (critical for repeated twist cycles).
5. Surface Passivation: Apply a chemical treatment to the finished spring to boost stainless steel’s natural corrosion resistance.
6. Quality Inspection: Test torque output (via micro-torque meters), verify dimensional accuracy, and check hook arm alignment to meet spec requirements.

· Packaging and Shipping Methods

• Packaging: Individual springs are sealed in anti-scratch, static-dissipative plastic bags (to protect fine wire surfaces); bulk orders are packed in foam-lined partitioned boxes (to prevent coil deformation or hook damage during transit).
• Shipping: Flexible logistics options:
  • Express Delivery (DHL/FedEx/UPS: 3–5 business days)
  • Air Freight (7–10 business days)
  • Sea Freight (20–30 business days)All shipments include full tracking and damage insurance.

· Process

· Frequently Asked Questions (FAQ)

• MOQ (Minimum Order Quantity): 100 pieces per spring specification; small sample packs (10–15 pieces) are available for performance testing.
• Lead Time: Standard lead time is 7–10 working days after order confirmation; expedited production (5–7 working days) is available for urgent orders (additional fees apply).
• Customization Capability: Full customization is supported—we can adjust coil diameter, hook arm length/angle, wire diameter, and torque output based on your technical drawings. Our engineering team will validate design feasibility for micro-spring production.