Conical Wedge Lock Washer Pair Sizes
This is a summary on our Conical Wedge Lock Washer Pairs for larger Bol sizes (M42 and larger), for additional information, please do not hesitate to ask.
All Conical Wedge Lock Washers are made from Spring Steel, eiher SAE6150 or SAE5160. Remember that Conical Wedge Lock Washers come in mating pairs.
This 1-pager provides a summary of target preload, and required torque , by bolt size and bolt class, for a range of k-factors.
- The product reference code.
- Metric Information
- Converted Metric to Imperial or actual Imperial size
- Data on Anti-Vibration Geometry
- Data on Anti-Relaxation Disc Spring Properties
- Related to 8.8 Property Class Fasteners
- Related to 10.9 Property Class Fasteners
- Related to 12.9 Property Class Fasteners
Please take note of the following abbreviations and useful information concerning each Bolt Size used in the Product Sections below:
- Ref : This is the Reliable Pressings Identifier with the matching Metric or Imperial Bolt Size reference as a suffix.
- Di : Inner Diameter, De : Outer Diameter.
- T-pair : Material Thickness of the mated pair.
- t-single : Material Thickness of a single Concial Wedge Lock Washer.
- l0 : The unloaded overall height of a single Conical Wedge Lock Washer.
- h0/t : The ratio of the unloaded Cone Height (h0 = l0 - t) to material thickness.
- Pitch : The Course Std Thread Pitch of the Bolt to be used with the Conical Wedge Lock Washer, used to derive CAM height.
- Imperial : Dimensions of the converted Metric size or the actual Imperial Size in inches
- TPI : Turns per Inch
- # CAMS : the number of "wedges" that are on the inside surface and which mate with each other.
- Height of CAMS : the height in mm of a single CAM and is a function of CAM nbr and Course Std Pitch.
- # GRIPS : The number of elevated "wedges" that bite into the surface of the tightening assembly
- Height of GRIPS : the height in mm of each GRIP
- LoadFlat : the imposed load generated when the Conical Wedge Lock Washers are flattened and flush with each other.
- DeflFlat : the amount of deflection required when tightening the pair to make the opposing CAM surfaces flush with each other.
- σI : This value provide information on how the cone that creates he spring effect will last and be maintained.
- GF = Ratio of yield point. This is the preload achieved expressed as % of yield point. Generally around 70%
Conical Wedge Lock Washer Pair Sizes
These dimensions pertain specifically to large bolt sizes, for anything smaller, please refer to our sister company Reliable Pressings.
Count
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Ref
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Metric
Bolt Metric
{{Bolt-size(Metric)}}
Pitch
{{Course-Std-Pitch}} mm
Di
{{Di(mm)}} mm
De
{{De(mm)}} mm
T - pair
{{T1(mm)}} mm
t - single
{{t2(mm)}} mm
Imperial
Bolt UNC
{{Bolt-size(UNC)}}
TPI
{{TPI}}
Di
{{Di(inch)}}”
De
{{De(inch)}}”
T - pair
{{T3(inch)}}”
t - single
{{t4(inch)}}”
For Vibrations
# CAMS
{{Cam-Teeth}}
of Height
{{Cam-Height}} mm
# Grips
{{Grip-Teeth-Nbr}}
of Height
{{Grip-Height}} mm
For Relaxation
l0
{{l0}} mm
h0/t
{{h0/t}}
s/h'0=100% - Flat
LoadFlat
{{Load-Flat(N)}} N
DeflFlat
{{Travel-of-Pair-to-Flat(mm)}} mm
σI
{{Sigma1(Mpa)}} MPa
Geometry
# Cams
{{Cam-Teeth}}
Height
{{Cam-Height}} mm
Width@OD
{{Cam-Width}} mm
# Grips
{{Grip-Teeth-Nbr}}
Height
{{Grip-Height}} mm
Width@OD
{{Grip-Width}} mm
Bolt Pitch
{{Pitch[mm]}} mm
8.8 Bolts
Well Lubricated
k-factor 0.153
Torque
{{88-PasteKest-0153-Torque[Nm]}} Nm
Preload
{{88-PasteKest-0153-ClampLoad[kN]}} kN
Some lubrication
k-factor 0.206
Torque
{{88-Oil-Kest-0206-Torque[Nm]}} Nm
Preload
{{88-Oil-Kest-0206-ClampLoad[kN]}} kN
No lubrication
k-factor 0.258
Torque
{{88-Dry-Kest-0258-Torque[Nm]}} Nm
Preload
{{88-Dry-Kest-0258-ClampLoad[kN]}} kN
10.9 Bolts
Well Lubricated
k-factor 0.153
Torque
{{109-PasteKest-0153-Torque[Nm]}} Nm
Preload
{{109-PasteKest-0153-ClampLoad[kN]}} kN
Some lubrication
k-factor 0.206
Torque
{{109-Oil-Kest-0206-Torque[Nm]}} Nm
Preload
{{109-Oil-Kest-0206-ClampLoad[kN]}} kN
No lubrication
k-factor 0.258
Torque
{{109-Dry-Kest-0258-Torque[Nm]}} Nm
Preload
{{109-Dry-Kest-0258-ClampLoad[kN]}} kN
12.9 Bolts
Well Lubricated
k-factor 0.153
Torque
{{129-PasteKest-0153-Torque[Nm]}} Nm
Preload
{{129-PasteKest-0153-ClampLoad[kN]}} kN
Some lubrication
k-factor 0.206
Torque
{{129-Oil-Kest-0206-Torque[Nm]}} Nm
Preload
{{129-Oil-Kest-0206-ClampLoad[kN]}} kN
No lubrication
k-factor 0.258
Torque
{{129-Dry-Kest-0258-Torque[Nm]}} Nm
Preload
{{129-Dry-Kest-0258-ClampLoad[kN]}} kN