BS-EN-4178 Complete Document History
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 C

Complete Current Edition:
   2017 EDITION - Aerospace series. Screws, pan head, six lobe recess, coarse - Jan. 31, 2017

Obsolete Revision Information:
   2009 EDITION - Screws, pan head, six lobe recess, coarse tolerance normal s - Dec. 31, 2009