Torque Limiting
SHEAR-TYPE™ SYSTEM
- All Guard-Nut® SHEAR-TYPE™ fasteners are available in screw and bolt type configuration
- Guard-Nut® SHEAR-TYPE™ fasteners insure precise torque control, and no-fault quality assurance. This cuts inspection time and insures specified clamp loads.
- Unique Double Hex design with proprietary HEX-GUARD™, the plastic insert that permits torquing of drive head only. The Double Hex feature permits easy removal and re-use as a conventional fastener after drive head has been sheared off. (Also available in single hex design without HEX-GUARD™ for more permanent, economical installations.
- Guard-Nut’s specially engineered 360 degree prevailing torque locking thread design enables accurate and repeatable locking torque. All torque limiting fasteners available with left hand threads.
- All Guard-Nut® SHEAR-TYPE™ fasteners are available in screw and bolt type configuration.
Features
- No limitation on bolt length.
- Torque limiting feature-head shears off at predetermined level.
- 360 degree prevailing torque locking design.
- Double-Hex configuration.
- Conventional Hex head to ISO standards. No special tools required.
- HEX-GUARD™ insures torqueing of drive head only.
- Clean, even break. No sharp edges.
- Optimum bearing surface permits maximum torque values and clamp loads.
- Washer face (optional)
SERIES 78 , 79, 80
- SHEAR-TYPE™ Multi-Purpose Fastener—Vibration resistance and torque control—all in one fastener.
- Available in nut , screw or bolt configuration
- Superior proprietary metal to metal locking system ( Series 78 nut )
- Permits optimum clamp load and vibration resistance without galling ( nut )
- Breakaway head
- Various head designs
- Available plastic security seal collar
- Optional Loctite® or similar locking additives on threads
- HEX-GUARD™ wrench stop ( with double hex-nut )
- All certified controls are built into the fastener during the manufacturing procedure
- Ideal for critical joints and field service where no fault is essential
* These series are available in both screw and bolt type
| SERIES 78 Single hex cone shaped lock nut |
SERIES 78 Double-Hex lock nut with HEX-GUARD™ |
SERIES 80 Double-Hex nut with red plastic security seal collar |
SERIES 79 Double-Hex nut with HEX-GUARD™ |
SERIES 79 Double-Hex half nut with HEX-GUARD™ |
SERIES 79 Single hex half nut |
