Lock Washers & Nord-Lock Style
Wedge-locking washer pairs and toothed washers that hold preload under vibration.
Locking washers for joints that vibrate, where a plain washer and correct torque are not enough. Wedge-locking pairs hold the preload rather than relying on friction that the vibration removes.
How we make it: Swiss CNC machining service →
3–5 weeks
1000 pieces
ISO 9001:2015
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Sizes | M3–M36 | metric |
| Types | Wedge pair · toothed · split | - |
| Hardness | ≥ 465 HV (wedge pairs) | - |
| Reuse | Not reusable (wedge pairs) | note |
| Coating | Zinc flake standard | - |
| Temperature | To 200 | °C |
Available Materials
- Spring steel
- Stainless 1.4310
- Hardened carbon steel
- Beryllium copper
Typical Applications
- Vibration-prone machinery
- Automotive joints
- Rail and track fixings
- Conveyor structures
- Electrical connections
Surface Finishes
- Zinc flake coated
- Delta-Tone
- Passivate
- Black oxide
- None (stainless)
Industries Served
- Automotive & EV
- Rail
- Energy & Oil & Gas
- Industrial Equipment
- Mining & Construction
What drives the price of this part
Derived from the callouts on this page. Where a driver is not on the drawing, it is not on this list.
- Order size
- Minimum order is 1000 pieces, where setup and tooling are amortised across the batch and per-part cost settles around cycle time and material. Below that quantity the same part costs more per piece, not less.
- Certification and paperwork
- ISO 9001:2015. On a certified family the inspection and documentation work is part of the price: first article inspection, material traceability and the dimensional report are produced per order, not per sample.
See how cycle time is calculated in the machining time calculator and what else moves a price in the cost driver reference.
How these parts are inspected
Matched to the callouts above and the instruments actually on the floor.
- Coordinate measuring machine (Zeiss CONTURA G2, two machines, GR&R 8.4% on the critical feature)
- Dimensional report against the drawing, with a 100% check on critical features rather than a sample
- Certificate of conformance and the mill certificate with every shipment
- Rockwell hardness tester on the part, not only against the mill certificate
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- Are wedge-locking washers reusable?
- No. The serrations bite once and deform; refitting a used pair gives you the appearance of locking without the function. Budget for new washers on every rebuild.
Related part families
Spring Washers
Split, wave and disc spring washers that keep preload when the joint settles or vibrates.
Precision Washers & Spacers
Flat, conical and shim washers from 0.05 mm, stamped or fine-blanked with lapped flatness.
Hex Head Bolts
Hex bolts to DIN 931/933 in 8.8, 10.9 and stainless, rolled threads and full certs.