DIN EN 4178 (2016-04)被替代
Aerospace series - Screws, pan head, six lobe recess, coarse tolerance normal shank, medium length thread, in titanium alloy, anodized, MoS lubricated - Classification: 1100 MPa (at ambient temperature)/315 øC; German and English version FprEN 4178:2015
出版：German Institute for Standardisation (Deutsches Institut für Normung)
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