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Positive mechanical lock that is not dependent on lubricants or plating for repeatability.
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Achieves precise preload - serrations provide adjustment that eliminates back-off or over-torque.
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Maintains fatique strength at reduced weight.
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External serrations in the nonload carrying portion of the thread elminates keyways allowing reduction of shaft wall thickness or diameter.
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Keyway stress concentrations are eliminated.
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Internal serrations of washer mates with serrated shaft.
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Serrations clearance for ease of washer installation and removal.
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Internal groove of nut accepts retaining ring of washer.
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Can be designed in various wrenching configurations
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Where ease of installation is preferred.
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Non-rotating applications where positive retention is desired.
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Where achieving precise preload is critical and existing nuts cannot provide adequate adjustment.
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Where weight reduction is a priority and shaft wall thickness or diameter can be reduced.
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Allows for better shaft balance than conventional positive locks.
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SHAFT BOLT SERRATIONS
Broaching serrations of shaft/bolt is required. For installation and removal of locknuts and lockwashers contact Shur-Lok for technical sales bulletin TSB0001. |
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SERRATIONS - CLEARANCE
Clearance fit is provided by Shur-Lok Design.
THREAD SIZE
.250 inch and larger.
Metric sizes available on request.
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