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prEN 4178

Aerospace series - Screw, pan head, six lobe recess, coarse tolerance normal shank, medium length thread, in titanium alloy, anodized, MoS2 lubricated - Classification: 1 100 MPa (at ambient temperature)/315 °C

Publication date:   Mar 12, 2026

General information

40.60   Close of voting   Jun 4, 2026

CEN

ASD-STAN Aerospace

European Norm

49.030.20   Bolts, screws, studs

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Scope

This document specifies the characteristics of screws, pan head, six lobe recess, coarse tolerance normal shank, medium length thread, in titanium alloy, anodized, MoS2 lubricated.
Classification: 1 100 MPa /315 °C .

Life cycle

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EN 4178:2017

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prEN 4178
40.60 Close of voting
Jun 4, 2026