Hex Head Screw- M16 X 200 X 44 Thd (Rolled Thread) (Zinc Plated), Is 1364, Property Class 1 0.9, Is 1367 Part-Iii, Is 1367 Part-Ii Grade A, Is 1367 Part-17. Clw Specn. No. Clw/Ms/3/201 Alt 2 And Clw Specn. No. Clw/Ms/3/49 Alt 4 Material Shall Be Procured From Clw Approved Sources Of Standard Hardware For 3 Phase Locos Or Their Authorised Dealers Only. ]