DS EN 4178:2009 Aerospace Series - Screws, Pan Head, Six Lobe Recess, Coarse Tolerance Normal Shank, Medium Length Thread, In Titanium Alloy, Anodized, Mos[2] Lubricated - 1100 Mpa (At Ambient Temperature)/315 Degree C Defines the characteristics of screws, pan head, six lobe recess, coarse tolerance normal shank, medium length thread, in titanium alloy, anodized, MoS[2] lubricated.