Spiralock®
Technologically-superior fastening system ideally suited for threaded joint applications subjected to heavy vibration and challenging environments.
Spiralock® Innovation
Whether it's a simple change of a fastener or a custom-designed solution, Spiralock technology delivers reliability of product performance that customers can count on.
The Edge is in the WedgeTM
By adding a 30° wedge ramp at the root of the internal thread, Spiralock has engineered a simple yet effective way to transform a traditional threaded joint into a safer and more reliable element. This remarkable design provides exceptional resistance to vibration loosening, improved joint integrity and consistent, repeated reusability while eliminating the need for secondary locking devices.
To survive the vibration and high temperatures of launch, we require the most reliable locking engagement thread. Screws must remain tight without opportunity for retightening. With conventional threading, screws loosened up and backed out under testing. The Spiralock thread form retained a tight seal at 300° C. Once torqued down properly, the screws stayed put in the threads, which helped us meet our flight schedule.
Dan Harpold
Load Distribution
The load carried by Spiralock threads is more uniform than 60° threads. Load percentage on the first engaged Spiralock thread is significantly lower.
Read MoreSpiralock® Technology
The standard internal thread profile has been transformed into a self-locking female thread form with the addition of a unique 30° wedge ramp at the root of the thread.
Read MoreVibration Loosening Resistance
Testing on Junker vibration equipment has proven that the Spiralock thread form outperforms other thread locking devices.
Read MoreSee It Work
Watch Spiralock in animated clips showing the Morphing Animation, Load Vector Comparison, and Photoelastic Analysis.
Read MoreSpiralock® Calculators
Use our interactive Torque and Drill Size calculators to determine your required values and recommendations.
Spiralock® Drill Size CalculatorSpiralock Torque Calculator
Spiralock® Taps & Gages
Spiralock® taps come in different styles to accommodate your needs and requirements. Gaging Spiralock® threads requires the use of special gages to ensure proper function of the thread. Non-Spiralock gages cannot determine the functionality of Spiralock® threads.
Explore AccessoriesTaps Sizes Chart - English
Taps Sizes Chart - Metric
Taps Sizes Chart - Fractional
Featured Spiralock® Fasteners
Need Help Finding the Right Solution?
Let our experts provide recommendations for your project or application.
Featured Spiralock® Tools
Cutting and cold forming taps (including premium taps for demanding applications), thread milling cutters and inserts, and gages.
