thanks everyone for the reply, I finally got in touch with engineering and they want HL70 aluminum collars for this repair, BTW I am replacing because I cannot install swaged-collar lock-bolts (no room to install) and (My Boeing)for BAC5004-2 is unavailable for me at this time, and the SRM does...
installing HL10VAZ titanium shear aluminum coating fasteners, need the type of collars for this install , LISI says HL70, HL94, HL1097 and HL379 are the typical installed collars but what type should I use in aluminum structure, 727-200, the repair does not call the collar type and I cant get...