Spiralock® is a proprietary thread form that resists loosening under vibration and dynamic loads without the need for secondary locking devices. Engineered for aerospace, automotive, and industrial applications, Spiralock technology improves joint reliability, extends service life, and reduces maintenance costs.
Spiralock® by Stanley
NAPPCO Advantage: Your Spiralock Supplier
NAPPCO offers Spiralock fasteners and provides engineering guidance on integrating this advanced thread form into your assemblies. We also offer VMI programs and custom sourcing for specialized sizes and materials.
Top Products
Spiralock is available in a variety of fastener styles, including nuts, bolts, and threaded inserts, all featuring the patented self-locking thread geometry.
Spiralock® Nuts
Self-locking without nylon or chemical adhesives.
Spiralock® Threaded Inserts
Permanent, vibration-resistant threads in softer materials.
Spiralock® Taps
Industries Served
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Aerospace
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Defense
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Automotive
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Industrial machinery
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Energy
Common Applications
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Aircraft structures
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Engine assemblies
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Heavy equipment
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Wind turbines
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High-vibration machinery
