TM 10-5411-206-14
(a) Determine thread size, grip range, style and material of rivnut to be used. Grip length equals
combined thickness of materials being fastened together. Grip range of rivnuts must encompass grip
length.
WARNING
Drilling creates metal chips which may enter eyes and cause serious injury. Eye
protection is required.
NOTE
Drill hole size must match size of rivnut being installed. Quantities of sheets maybe
drilled at the same time when held together with sheet fasteners.
(b) Drill hole in structure.
(c) Remove all metal chips and remove burrs from drilled holes.
(d) If a countersunk head rivnut is being installed, countersink hole using a 100-degree machine
countersink.
NOTE
Coat rivnut with sealer before installing.
(e) Insert rivnut in hole. Make sure sheets are held tightly together before pulling.
(f) Thread stem of a pullup stud into rivnut.
(g) With pullup stud parallell to axis of rivnut, pull upon rivnut. Exert firm pressure but do not bend or
buckle metal sheets.
(h) Make sure fastened parts are not loose, rivnut does not rotate and rivnut head is seated tightly
against surface. Make sure rivnut threads are in good condition. If threads are damaged or rivnut is
improperly installed, remove it and install a new one.
(2) Removal. (figure 3-8)
WARNING
Drilling creates metal chips which may enter eyes and cause serious injury. Eye
protection is required.
(a) Drill through head of rivnut, using same size drill used to make original hole. Counterbore in rivnut
will act as a drill guide.
(b) Remove head of rivnut.
3-15
