TM 10-5410-221-24
(1) Hold parts to be riveted tightly together
(1) The rivet stem and collar shall be flush
with clecos, clamps or other satisfactory method.
within the limits described in figure 2-3.
(2) Insert proper rivet in hole and apply with
(2) A slight "flash" caused by the pressure
gun (supplied with repair kit) by inserting stem head of
necessary to drive the rivet is acceptable within the limits
rivet in bottom slot in gun pulling head (nose piece).
shown in figure 2-3.
Note. Wet all rivets with sealant (PRC 611,
(3) The configurations of installed rivets with
the blind side visible shall be similar to hose shown in
Products Research Co., Burbank, California, or
figure 23.
equivalent) before installation.
(4) Superficial stretch marks which may
(3) Hold gun at right angle to work. Push gun
appear on the rivet are not detrimental to rivet strength
against work with just enough force to firmly seat rivet
and are acceptable.
and to aid in avoiding sheet or other part separation.
(5) After stem trimming, stem can be checked
(4) Pull rivet until stem breaks.
for tightness by applying a force of approximately ten
(5) Installed blind rivets shall be checked per
pounds to the trimmed stem of the rivet, push steadily;
do not strike. If the stem is neither pushed out or loose,
(6) Trim the broken stem flush with the rivet
tightness is satisfactory.
head.
(6) Rivet head gapping shall be checked with
(7) Firmly press on the installed rivet to
a 0.002 feeler gage. Rivets with a 0.002 gap on more
assure tightness.
than 40 percent of the rivet head circumference shall not
d. Inspection of Installed Rivets. Installed rivets
be acceptable.
shall be inspected as follows.
(7) A partial gap on a round surface is
acceptable, provided the rivet head bears at tangent
points, as shown in figure 2-3.
Nominal
Hole size
rivet
and drill
Diam-
Length
Grip
Rivet
Insert Replacement
diameter
number
eter
range
No.
a. Removal.
Inserts which are damaged or
3/32
0.096.100
.212
.020-.125
32
missing shall be removed as follows.
#41
.094
.337
.126-.250
34
(1) Using a drill with the same size as the
.170
.020-.062
41
initial potting hole, drill out the insert.
.232
.063-.125
42
Note.
For Rosan inserts, the initial hole
.294
.126-.187
43
diameter shall be 0.03 to 0.05 inch greater than the
1/8
.128-.132
.357
.188-.250
44
counter- sink diameter. For Shurlok inserts, the initial
#30
.125
.419
.251-.312
45
hole shall be as recommended by the manufacturer.
.481
.313-.375
46
.628
.376-.500
48
(2) Remove loose particles from the hole
using a compressed air blast with clean air.
.254
.020-.125
52
.160-.164
.316
.126-.187
b. Potting Resin (adhesive) Mixing. The adhesive
5/32
#20
.156
.379
.126-.150
54
compound shall be blended using a 50 percent resin and
.
504
.251-.375
56
50 percent curing agent ratio. Blend the resin and the
.629
.376-.500
curing agent together in a paper mixing cup using long,
.277
.020-.125
62
smooth strokes, rather than a whipping motion. Pot life
.192-.196
.402
.126-.250
64
after mixing is 10 minutes and shall be discarded after 8
3/16
#11
.187
.527
.251-.375
66
minutes.
.652
.376-.500
68
c. Application of Potting Compound. Apply the
.777
.501-.625
610
adhesive compound observing the following.
.902
.626-.750
(1) Use a clean tongue depressor to trowel
.257-.261
.447
.125-.250
84
the adhesive compound into the insert hole.
F
.250
.572
.251-.375
86
.697
.376-.500
88
.947
.626-.750
812
