EN 4008-008:2011

Overview

EN 4008-008:2011 is a European Standard developed by CEN and the Aerospace and Defence Industries Association of Europe (ASD-STAN) that defines the product requirements for the positioner used with the M22520/7-01 crimping tool. This positioner is designed specifically for crimping electrical contacts in aerospace applications, according to the requirements established in EN 4008-002. The standard ensures uniformity, reliability, and safety in the aerospace electrical and optical connection processes by setting precise characteristics for this essential tool accessory.

Key Topics

• Scope: Specifies the characteristics for the positioner accessory of the M22520/7-01 crimping tool. It is intended for crimping electrical contacts meeting aerospace quality and safety standards.
• Dimensions and Mass: Defines strict size and mass limitations for the positioner to ensure compatibility with the crimping tool. The maximum mass allowed is 30 g, and dimensional tolerances are ±0.25 mm.
• Material and Surface Treatment: The positioner body is made from blue anodized aluminum alloy, with stainless steel ferrule components to ensure durability, corrosion resistance, and long operational life.
• Design and Locking Mechanism: The positioner attaches securely via two bayonet lock pins and is spring-loaded to provide accurate and repeatable positioning of contacts during crimping.
• Marking Requirements: Clear markings on the positioner include the manufacturer's name, part number, and standard reference (EN 4008-008 or EN 4008-008A) to enable traceability and conformity verification.
• Technical Specifications Reference: For detailed technical requirements, the standard refers to EN 4008-001, which contains comprehensive specifications for crimping tools and accessories.

Applications

EN 4008-008:2011 applies primarily to aerospace manufacturing and maintenance sectors where high-integrity electrical and optical connections are critical. Practical applications include:

• Aerospace Electrical Systems: Ensures accurate and standardized crimping of wire terminals used in aircraft wiring harnesses, contributing to system reliability and safety.
• Defense Industry: Used in military aerospace applications requiring robust and certified connection tools compliant with rigorous quality standards.
• Maintenance and Repair Operations (MRO): Facilitates consistent tool setup and replacement during scheduled servicing of aerospace electrical components.
• Quality Assurance and Compliance: Helps aerospace manufacturers and suppliers maintain conformance to international aerospace electrical connection standards by employing standardized tooling accessories.

Related Standards

• EN 4008-001: Outlines the general technical specifications for crimping tools and accessories in aerospace applications.
• EN 4008-002: Defines product standards for crimping tools related to electrical contacts, establishing the basis for the positioner's functional compatibility.
• EN 2591-100: Provides definitions and general test methods for electrical and optical connection elements.
• MIL-C-22520/7-01: The original US military specification for the M22520/7-01 crimping hand tool, which EN 4008-008 references for design compatibility.

Summary

Compliance with EN 4008-008:2011 ensures that the positioner used with the M22520/7-01 crimping tool meets rigorous European aerospace industry standards. This contributes to the uniformity, performance, and safety of electrical contact crimping, which is essential in aerospace manufacturing, defense, and maintenance processes. Manufacturers and users of aerospace crimping tools will benefit from standardized tooling accessories that align with established electrical connection quality requirements.