Wedge lock washer W.TEC, narrow shape
Steel Delta Protekt, narrow shape W.TEC
WSH-WDGELOK-SF-(DPE)-30
Art.-no. 0401780030
EAN 4046778887562
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General:
Lock washer in line with DIN 25201 to prevent loosening in laterally loaded connections, vibrating screw connections and screw connections subject to oscillations.
Corrosion resistance:
600 h base metal corrosion in line with DIN EN ISO 9227-NSS (DIN 50021-SS) — in comparison: 96 h yellow galvanised (A2C)
Function:
The wedge surface slope between the two lock washers ensures highly secure locking. The screw connection is locked by pre-tension instead of by friction.
Benefits:
- Easy to assemble and disassemble (wedge lock washers are already glued in pairs)
 - Tested system for screw retainer (locking elements that prevent unscrewing), at high as well as low tension
 - Especially suited for dynamic loading – even when used with lubricants
 - Can be reused multiple times, without loss of quality
 - Gentle on surfaces
 - Can also be used with high-strength screws 8.8, 10.9 and 12.9 and the matching nuts
 - Available in stainless steel or steel (other materials available on request)
 - With narrow and wide contact surface
 
For the recommended tightening torques, please see the technical information in the DIN/ISO catalogue.
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Vehicle manufacturing, mechanical engineering, manufacturers of pneumatic and electric tools, mining, agricultural machine manufacturing, manufacturers of mixing systems, transport and conveying systems.
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Internal diameter (d1)  | 31.4 mm  | 
Suitable for screw thread  | M30  | 
Suitable for thread (imperial)  | 1 1/8 inch  | 
Outer diameter (d2)  | 47 mm  | 
Thickness (h1)  | 5.7 mm  | 
Material  | Steel  | 
Vickers hardness, HV  | 485 HV  | 
Surface  | Flake zinc silver  | 
Corrosion protection period  | 600 h  | 
RoHS-compliant  | Yes  | 
Design  | Narrow  | 
Locking function  | Locking against self-loosening by mechanical interlocking  | 
    
