Lock washer S Spring steel with mechanically applied zinc coating (≤ dia. 3.5 zinc-plated, blue passivated)
Spring steel zinc plated type S
WSH-LOK-S-(MZN)-30,0X21,0X1,40
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The Belleville washer shape achieves an optimum friction fit with simultaneous form fit via the helical gearing
It makes sense in many cases – primarily when using short screws and loads which are vertical to the screw axis – to prevent the connection loosening by using lock washers to supplement the pre-tensioning force.
Datasheets(X)
CAD data (available after login)
 | |
Suitable for screw thread | M20 |
Internal diameter (d1) | 21 mm |
Outer diameter (d2) | 30 mm |
Height (h1) | 2.5 mm |
Thickness (s1) | 1.4 mm |
Material | Spring steel |
Surface | Zinc plated |
RoHS-compliant | Yes |
Form | S |
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