R413P33

NUT
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About this product
The R413P33 is a self‑locking, aircraft‑grade hex nut crafted from heat‑treated steel alloy and finished with corrosion‑inhibiting plating. Designed to maintain clamp load under vibration and thermal cycling, it secures critical assemblies in airframes, engines, and systems. Supplied with TRI‑Release 8130 documentation, it meets traceability requirements for certified aircraft.
R413P33 Datasheet
UOM: EA
Stock Location: Dubai
Hazardous Item: Non-Hazardous Item
Lead Time: Stock
Certification: TRI RELEASE 8130
8130/EASA Eligible: Yes
PRODUCT DESCRIPTION

R413P33

  • Self‑Locking Design: Integrated nylon insert prevents back‑off under high vibration without additional lockwire.

  • High‑Strength Alloy: Heat‑treated steel alloy provides tensile strength above 900 MPa for demanding loads.

  • Corrosion‑Resistant Plating: Cadmium or zinc-nickel finish withstands moisture, hydraulic fluids, and cleaning agents.

  • Lightweight Profile: Optimised geometry minimises weight while maintaining load capacity.


  • Secures strut, actuator, and hinge fittings subject to repeated cycles.

  • Retains pins and bolts in aileron, elevator, and rudder hinge assemblies.

  • Fastens secondary brackets and fairings on turbine and piston engines.

  • Anchors circuit‑card trays and mounting brackets in electronics bays.

  • How does the self‑locking feature work?

A nylon insert deforms around the bolt threads, creating friction that resists loosening under vibration.

  • Can this nut be reused after removal?

Re‑use is not recommended. Install a new nut to maintain full locking force and fatigue life.

  • How do I inspect the nut before installation?

Verify the nylon insert is free of debris, threads are undamaged, and plating remains intact.

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