- Sizes from M3 to M8 (#4 to 5/16")
- Knurled shoulder
- Reduced distance between last thread and bottom of shoulder
- Serrations and undercut formed under shoulder
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- Eliminates crushing of plastic material
- Provides tight joint
- Resists vibration loosening
- Eliminates need for nut assembly
- Increased strip-out torque
- Positive thread engagement
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