SIST EN 4057-202:2006

Overview

EN 4057-202:2005 is a CEN-adopted aerospace test method standard that specifies the examination of mass and dimensions for cable ties used in aerospace harnesses. It forms Part 202 of the EN 4057 series and is intended to be used together with EN 4057-100 (General). The standard defines the required apparatus, sampling procedure and recording requirements to ensure cable ties meet the dimensional and mass criteria specified in the applicable product standard for aerospace applications.

Key Topics and Requirements

• Scope: Procedure for examination of mass and dimensions of cable ties for harnesses in aerospace contexts.
• Sampling: Test specimens are taken in groups of ten for mass examination.
• Mass measurement: Use an electronic scale with an accuracy of ±0.01 g. Ten specimens are weighed together in a controlled environment (cabinet free from air currents) and the total mass recorded.
• Dimensional measurement: Use measuring instruments capable of:
  • 0.01 mm accuracy for head and strap thickness,
  • 1 mm accuracy for length dimensions.
    Dimensions of each specimen are measured and recorded.
• Requirements: The recorded mass of the 10 specimens and each recorded dimension must comply with values specified in the applicable product standard. EN 4057-202 does not provide those product-specific limits itself - it describes the method to verify conformity.
• Normative reference: EN 4057-100 (General test method requirements) is indispensable when applying this part.

Applications and Who Uses It

EN 4057-202:2005 is practical for quality control, procurement, certification and maintenance activities where consistent physical characteristics of cable ties are critical for safety and performance:

• Aerospace cable tie manufacturers - for production QA and batch acceptance testing.
• Incoming inspection teams - to verify supplier conformity to product standards.
• Independent test laboratories - for accredited dimensional and mass testing.
• Design and qualification engineers - to validate manufacturing tolerances during component qualification.
• Maintenance and overhaul organizations - to check replacement parts for conformity.

Related Standards

• EN 4057-100 - Aerospace series: Cable ties for harnesses - Test methods - Part 100: General (normative reference).
• Developed under AECMA-STAN and adopted by CEN (European Committee for Standardization) for national implementation.

Keywords: EN 4057-202:2005, cable ties for harnesses, aerospace test methods, examination of mass and dimensions, EN 4057-100, cable tie measurement, aerospace QA.