I'm trying to select a fastener to be used to attach a removable hardwood molding for an aircraft cabin cabinet. The screws are partially screwed into the composite panel inserts such that the screws can slide into keyhole slots but the molding will remain tight to the cabinet. Would self-locking screws (such as NAS1190) be a must in this situation? I am not completely sure when self-locking screws are appropriately used / not used in aircraft engineering. Any advice would be much appreciated.
Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations JStephen on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Fastener Selection
- Thread starter mikestl
- Start date
CoffinsCorner
New member
Standard ways of fixing decorative mouldings to composite panels in a/c interiors are generally by means of ball catches or dual lock. Dual lock is an easy way out when the weigt is low, and it is quite strong...
Self locking screws aren't a bad idea for key-locked pieces; but I haven't seen them required. Haven't heard about anything falling apart yet! Loctite would be an alternative (cheaper?) solution.
If the fastener length is adjusted properly, it will get some preload from a standard keylock due to the taper on the engaging part, which should prevent the screw from backing out. This is one of those process dependent things; your confidence in the techs doing the installation will affect your confidence in the design.
If the fastener length is adjusted properly, it will get some preload from a standard keylock due to the taper on the engaging part, which should prevent the screw from backing out. This is one of those process dependent things; your confidence in the techs doing the installation will affect your confidence in the design.
- Status
Similar threads
- Locked
- Question
- Locked
- Question