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Aerospace series. Heat shrinkable moulded shapes - Technical specification. Original standard UNE-EN 4840-001-2018 in PDF full version. Additional info + preview on request

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Aerospace series. External spiral drive heads for threaded fasteners. Geometrical definition and fastener head wrenching configuration. Original standard UNE-EN 4852-2019 in PDF full version. Additional info + preview on request

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Amendment 1 - Voltage characteristics of electricity supplied by public electricity networks. Original standard UNE-EN 50160-2023 A1-2026 in PDF full version. Additional info + preview on request

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Voltage characteristics of electricity supplied by public electricity networks. Original standard UNE-EN 50160-2023 in PDF full version. Additional info + preview on request

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Information technology. Generic cabling systems - Office spaces. Original standard UNE-EN 50173-2-2018 in PDF full version. Additional info + preview on request

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Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen. Requirements and tests for apparatus using software and/or digital technologies. Original standard UNE-EN 50271-2019 in PDF full version. Additional info + preview on request

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