Overview
ISO 13598:2000 specifies the dimensions of self-locking inserts with MJ threads, reduced flanges, and a closed design, manufactured from metallic materials. These inserts can be either coated or uncoated and are used primarily in honeycomb and composite structures in the aerospace industry. This international standard ensures that inserts used in aerospace applications adhere to a consistent set of dimensional requirements, supporting product compatibility and quality across global markets.
Key Topics
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Self-Locking Inserts
The standard addresses inserts that have an internal self-locking feature, essential for maintaining secure fastener joints under vibration and load typical in aerospace environments.
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MJ Threads
Inserts covered by this standard employ MJ (Metric Aerospace) threads, known for their high fatigue strength and suitability for aerospace fasteners.
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Reduced Flanges and Closed Design
The inserts feature reduced flanges, providing weight savings while maintaining structural integrity. The closed type design helps prevent ingress of contaminants in sensitive assemblies.
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Material and Finish
Applies to metallic inserts, with provisions for both coated and uncoated finishes, adapting to varied corrosion resistance and conductivity requirements.
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Dimensional Consistency
The standard includes specific guidelines on measurements and tolerances for insert dimensions post-coating, ensuring reliable interchangeability.
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Application Guidance
While ISO 13598:2000 establishes dimensional standards, it does not specify strength, temperature classification, or suitability concerning particular core materials and potting compounds. These must be assessed separately by design engineers.
Applications
ISO 13598:2000 is relevant wherever aerospace components require the integration of fasteners into honeycomb or composite sandwich panels. Practical applications include:
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Aircraft Cabin Interiors
For mounting seats, panels, and equipment where sandwich structures are prevalent.
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Spacecraft Structures
Provides fastener solutions for composite assemblies in satellites and spacecraft.
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Helicopter and Unmanned Aerial Vehicles
Ensures reliable threaded insert mounting in lightweight, high-strength assemblies.
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Aerospace Product Standard Development
This standard is designed as a reference for compiling aerospace product standards, streamlining material, and part selection processes for manufacturers and suppliers.
Using standardized dimensions provided by ISO 13598:2000 promotes compatibility among inserts and threaded hardware, reduces design ambiguity, and supports maintenance efficiencies throughout an aircraft's lifecycle.
Related Standards
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ISO 5855-2:1999 Aerospace - MJ threads - Part 2: Limit dimensions for bolts and nuts
Specifies dimensional requirements for MJ threads, which are directly referenced in ISO 13598:2000.
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Other ISO 135xx Series Standards
May include related specifications for aerospace fasteners, inserts, and threaded components.
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ISO/TC 20/SC 4: Aerospace Fastener Systems
Technical committee responsible for the development and maintenance of fastener-related standards in aerospace applications.
By adhering to ISO 13598:2000, aerospace manufacturers, suppliers, and engineers achieve assured quality and compatibility for inserts used in critical honeycomb and composite structures, supporting safety, reliability, and international market acceptance.