UNE EN 4178:2017现行
Aerospace Series - Screws, 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 Degrees C (Endorsed By Asociacion Espanola De Normalizacion In March Of 2017.)
出版：Asociacion Espanola de Normalizacion
专家解读视频
