Trutech Springs manufactures high‑performance Stainless Steel 304 (SS304) compression springs engineered for long life, consistent force, and reliable performance in corrosive or hygiene‑sensitive applications. From miniature springs for precision instruments to heavy‑duty coils for industrial assemblies, we produce to your drawing or help you design the optimal spring rate, load, and travel for your application.

Why SS304? AISI 304 stainless provides excellent corrosion resistance, good formability, and stable mechanical properties, making it a cost‑effective choice versus 316 for many marine, food, pharma, and outdoor uses.

Key Features & Benefits

• Corrosion resistance: Performs well in humid, mildly acidic/alkaline, and saline environments.

• Hygiene friendly: Smooth finish and optional passivation—ideal for food processing and pharma/medical devices.

• Consistent force: Tight control of spring rate, free length, and load at working heights.

• Temperature capability: Suitable for typical operating ranges from –50°C to ~260°C (consult us for duty at higher temperatures).

• Non‑rusting appearance: Clean, bright finish options maintain aesthetics in visible assemblies.

• Custom manufacturing: CNC coiling, heat treatment, optional shot peening, grinding, and passivation.

• Fast lead times: Prototype to volume production with PPAP/IMDS/traceability support on request.

• Applications:

  Trutech Springs’ SS 304 compression springs are widely used in:

  • Automotive and truck assemblies

  • Industrial and agricultural machinery

  • Marine and outdoor equipment

  • Electrical and electronic devices

  • Food & beverage machinery, bottling lines, packaging equipment

  • Pharmaceutical & medical devices, sterilizable fixtures

  • Marine & coastal hardware, outdoor electronics

  • Pumps, valves, and fluid control assemblies

    Technical Capabilities (Customisable)

    • Material: AISI Stainless Steel 304 spring wire

    • Wire Diameter Range: ~0.20 mm to 10.0 mm (others on request)

    • Outer Diameter (OD): As specified

    • Free Length (Lo): As specified

    • Solid Height (Ls): Optimised to avoid coil bind in service

    • Spring Rate (k): Engineered to target load/deflection curve

    • Coils: Active coils per design; helix direction right or left

    • Ends: Open, Closed & Squared, Closed & Ground

    • Surface Finish: As‑coiled, passivated, deburred; shot peening on request

    • Tolerances/Standards: Manufactured to your drawing; compliance to common spring standards (e.g., as per ASTM/EN) on request

    • Compliance: RoHS / REACH compliant materials available

    • Why Choose Trutech Springs

      • Application engineering: We help specify rate, pitch, active coils, preload, and maximum working deflection.

      • Quality you can trust: Process controls, in‑process inspections, and 100% checks on critical dimensions where required.

      • End‑to‑end service: Rapid prototyping, pilot runs, and scalable production.

      • Industry coverage: Trucks & trailers, agriculture, food/pharma, general engineering, and more.

      • How to Order / Request a Quote

        Share the following for a fast quotation and DFM feedback:

        1. Material: SS304

        2. Wire dia (d), Outer dia (OD), Free length (Lo)

        3. Total & active coils, end type (closed/ground/squared)

        4. Required load at height (F @ L), or target spring rate (k)

        5. Working environment (temperature/corrosion/media)

        6. Quantity & delivery schedule