Design reference
DIN 127 (split lock) / DIN 6798 (serrated) style design practice
Spring Washers
Custom Serrated & Split Lock Washers
Spring-style lock washers with split or serrated features for applications that use local spring action and surface engagement beneath a fastener.
- Manufacturing basis
- Made to drawing
- Wire / thickness
- Thickness 0.15 - 3 mm typical
- Envelope
- 3 - 150 mm typical
- Length / height
- N/A (flat washer form)
About Custom Serrated & Split Lock Washers
Split and serrated lock washers are familiar fastening components, but their effectiveness depends heavily on joint design, surface hardness, preload and vibration conditions. For custom manufacturing, dimensions and tooth or split geometry should be specified clearly, while critical anti-loosening performance should be validated at the joint level rather than assumed from the washer alone.
Key Design Characteristics
- Split geometry creates local spring action as the washer is compressed.
- Serrations can engage mating surfaces, but coating and surface hardness affect that interaction.
- Washer ID, OD and thickness must suit the fastener and bearing area.
- The washer should not be presented as a universal solution for every vibration-loosening problem.
What to Specify for a Custom Quote
- Fastener size plus washer ID, OD and thickness
- Split or serration geometry
- Required flatness or free height
- Mating surface material and finish
- Corrosion protection, quantity and any joint-level performance requirement
Manufacturing Review
Stamping and forming should control burrs, tooth direction and free height. If the washer is plated, coating buildup on serrations and the risk of hydrogen embrittlement for hardened carbon steel should be considered with the finish supplier.
Common Assembly Roles
- Fastened assemblies using a spring-style washer
- Electrical bonding variants with serrated contact features
- Replacement or custom-size locking washers
Made to Order
How This Product Is Quoted
This category is reviewed from the drawing and working requirement rather than from a fixed public stock list.
Typical material direction
Carbon spring steel, 301/304 stainless
Why there is no fixed table
A full cross-brand public dimension table was not verified in this pass; treat listed range as typical, confirm exact size at quotation.
Next Design Decisions
Next Steps for Your Spring Design
Once the spring style is selected, confirm how it works in the assembly, which material suits the environment, how it will be manufactured and which dimensions and performance points should be controlled on the drawing.
Applications
Where this spring style fits
Review best-fit uses, assembly constraints and situations where another spring style may be a better choice.
View application guidance →Materials
Choose the material for the environment
Hardened carbon spring steel is common for strength; stainless versions are used where corrosion is more important. Finish selection should account for the base material and any embrittlement or conductivity concerns.
Compare spring materials →Manufacturing
Plan prototype and production
Review forming, heat treatment, secondary operations, inspection and the path from first samples to repeat production.
View manufacturing capabilities →Engineering Data
Use the engineering guide for design support
Use the engineering library to review materials, sizing considerations and applicable standards for the custom design.
Open Spring Engineering Guide →Material Direction
Common Material Families to Review
The links below are selection guides, not a claim that every grade is suitable for every size or load.
Compare Designs
Related Spring Products
Use these alternatives when the available space, connection style, travel or force direction changes.
Spring Washers
Wave, Curved & Conical Washers
Spring washers in wave, curved or conical forms for light-to-moderate axial preload, tolerance compensation and contact maintenance in compact bolted or stacked assemblies.
Wire Forms
Retaining Rings / Snap Rings
Custom wire retaining and snap-ring forms for grooves, shafts and bores where the ring must install reliably, recover elastically and hold a component in position.
Flat Springs & Stampings
Contact, Battery & Grounding Springs
Custom conductive spring contacts for batteries, grounding points and electrical interfaces where the part must maintain contact pressure while carrying current or bonding surfaces.
Product Questions
Serrated & Split Lock Washers FAQ
Will a split lock washer prevent loosening in every vibrating joint?
No. Joint preload, bolt stretch, vibration direction and mating surfaces all matter. Critical joints should be validated using an appropriate locking strategy.
Why do serrated washers need surface information?
Their teeth interact directly with the mating surface, so hardness, coating and conductivity can change how they grip or make electrical contact.
RFQ
Send the Working Requirement
A drawing is ideal. If you do not have one yet, provide the dimensions, load or torque, travel, environment and expected quantity that matter in the assembly.
CustomSprings Engineering Catalog
Request This Spring
Send your dimensions, quantity and drawing for engineering review.