NAS0331 Method 200
National Aerospace Standard for bearing retention using controlled swaging techniques
NAS0331 Method 200 is a National Aerospace Standard that defines approved methods for bearing retention in aerospace assemblies. It specifies controlled swaging and staking procedures, tooling requirements, and inspection criteria to ensure bearings are securely retained without damage to the bearing race or housing. This standard is widely referenced in military and commercial aviation manufacturing.
Overview
NAS0331 Method 200 establishes standardized procedures for bearing retention in aerospace applications. This specification ensures consistent, repeatable results across manufacturing facilities and supports quality assurance requirements.
The standard covers multiple retention methods including swaging, staking, and interference fit installations. It defines acceptance criteria, inspection methods, and documentation requirements for aerospace bearing assemblies.
American Precision Assembly maintains full compliance with NAS0331 Method 200 for all bearing retention operations, using calibrated tooling and trained technicians to meet aerospace quality standards.
Applications
Common aerospace applications where NAS0331 Method 200 is utilized.
- 1Flight control actuator bearings
- 2Landing gear pivot assemblies
- 3Engine accessory gearbox bearings
- 4Helicopter rotor head bearings
- 5Flap and slat mechanism bearings
Related Specifications
Standards, tooling, and supplier references commonly associated with NAS0331 Method 200.
ST 926A
Standard aerospace bearing installation tool for press-fit operations
ST 934
Aerospace bearing swaging tool for controlled material displacement retention
ST 928C
Precision bearing staking tool for point-retention bearing installation
Boeing HP 12-11
Boeing approved supplier process reference for bearing installation operations
Lockheed LMA-PB023
Lockheed Martin process specification for precision bearing installation in defense systems
Related Part Numbers
Bearing part numbers commonly installed using NAS0331 Method 200.
FAQs
Frequently asked questions about NAS0331 Method 200.
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Contact Information
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