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MS17825

MS17825 – Aerospace Grade Self-Locking Castle Nut

Trusted Manufacturer & Supplier of MS17825 Castle Nuts – Built for Aerospace Precision

What is MS17825?

MS17825 is a military standard self-locking castellated hex nut designed specifically for aerospace and defense applications. Made with high-strength materials and engineered for extreme conditions, this nut provides secure locking with a cotter pin, preventing loosening under vibration or high temperature.

We manufacture and export high-precision MS17825 Castle Nuts, offering unmatched reliability for critical assemblies in aircraft structures, engines, and defense machinery.

Key Features of MS17825 Castle Nuts

  • Standard: MS17825 (MIL-SPEC)

  • Nut Type: Self-Locking, Castellated, Hexagon

  • Insert: Non-metallic locking insert (rated to 250°F / 121°C)

  • Material: A286 Stainless Steel (high strength and corrosion resistant)

  • Finish: Passivated / Cadmium Plated / Customer-specific

  • Thread Type: UNJF / UNF

  • Locking Mechanism: Cotter pin through slotted design

Applications

The MS17825 self-locking castellated nut is ideal for use in:

  • Aircraft engines and airframes

  • Landing gear assemblies

  • Rotor systems and control linkages

  • Military ground vehicles

  • Aerospace actuators and joints

  • Space-grade fastening systems

✅ Why Choose MS17825 Castle Nut from Us?

As a trusted manufacturer and exporter of aerospace-grade fasteners, we specialize in:

  • Precision manufacturing of MS17825 nuts to exact MS/MIL/AS specifications

  • In-house heat treatment, thread rolling, and non-destructive testing

  • Supply of MS17826 Castellated Nuts and other Mil-Spec hardware

  • Certifications: AS9100D, ISO 9001, NADCAP (where applicable)

  • Rapid prototyping and small-batch production for customized applications