TM 10-5411-224-14
Figure 5-3. Rivet Removal
b.
Rivnut Installation and Removal. Rivnuts (threaded inserts) are tubular rivets with internal threads and are used
throughout the shelter wherever blind threads are required. The types of rivnuts used in the shelter are shown in figure 5-
4 and described in Table 5-3.
NOTE
Flat head rivnuts (style D and E) may be used wherever head thickness will not interfere with
the installation of equipment. Countersunk head rivnuts (style C), are used for flush
installation. Keyed rivnuts are used in locations which are subject to vibration and torque.
Closed end rivnuts (styles C and E) must be used for exterior repairs and floor repairs to .keep
moisture and dirt from entering panels. Open end rivnuts (style D) may be used in areas
where sealing is not required.
(1)
Installation (Figure 5-5).
NOTE
When installing new rivnuts in the same location as a rivnut that has been removed , use the
next larger diameter rivnut for replacement if diameter of the hole in the structure was
enlarged during removal.
(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.
5-9
