Qi Sheng lock washer are used to help resist loosening caused by vibration or movement, supporting more secure fastening in equipment, mechanical assemblies, and maintenance applications. They are selected based on joint design, load conditions, and installation method.
We can supply lock washers in multiple sizes and material options, with finishes available for corrosion resistance. For OEM and distribution customers, we support stable bulk supply and packaging customization.
For accurate quoting, please provide washer style, size, material/finish requirement, and quantity.

How to Order (Quick Specs)
Please include: washer type, size (ID/OD/thickness), material, finish, quantity, and delivery destination.

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DIN 127 Spring Lock Washer
DIN 127 Spring Lock Washer

DIN 127 Spring Lock Washer

  1. Complies with ISO 7090, DIN 127, ANSI B18.21.1; anti-loosening fastener accessories
  2. Material: Carbon steel, stainless steel (304/316), alloy steel; elastic-grade variants available
  3. Structure: Open annular body + central through hole (matching bolt diameter)
  4. Surface treatments: Carbon steel (zinc plating, black oxide), stainless steel (passivation)
  5. Size: Aperture M2–M36, thickness 0.5–4mm, opening gap 0.2–1.5mm
Self-locking washer for secure fastening applications, DIN 25201 standard, made of durable metal.
Self-locking washer for secure fastening applications, DIN 25201 standard, made of durable metal.

DIN 25201 Double fold self-locking washer

  1. Complies with ISO 10664, DIN 25201, ANSI B18.21.1; anti-loosening fastener accessories
  2. Material: Carbon steel, stainless steel (304/316), alloy steel; elastic-grade variants available
  3. Structure: Double-folded annular body (open/closed type) + central through hole + self-locking folded edges
  4. Surface treatments: Carbon steel (zinc plating, black oxide), stainless steel (passivation)
  5. Size: Aperture M3–M24, thickness 1.0–4.5mm, folded edge height 0.4–2.5mm