Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations IDS on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Fastener Selection

Status
Not open for further replies.

mikestl

Aerospace
Jun 14, 2010
20
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.
 
Replies continue below

Recommended for you

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.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor