Security Locknut Inc.

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Security Locknut Inc. designs and manufactures self‑locking, spring‑steel insert locknuts, lockbolts, lock screws, specialty washers, and provides engineering support services. All offerings are built around a proprietary insert technology that allows the components to perform in the most demanding environments. The products resist vibration, tolerate heat up to 750 °F, and are removable, reusable, and adjustable. They achieve locking in any position regardless of the torque applied, and installation requires no special tools. The fasteners are compatible with standard screw‑thread mating parts, and the company also produces custom‑engineered specials to satisfy specific design requirements.

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