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