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Section B
1 - 5
Rivet Nut Tool Procedure
A 'Rivet Nut' is a one piece fastener installed 'blind' from
one side of the machine body/framework. The rivet nut is
compressed so that a section of its shank forms an 'upset'
against the machine body/framework, leaving a durable
thread (see illustrations).
Rivet nuts are fitted to various parts of the machine body
and framework. They are used in a number of applications,
for instance, hose clamp and hydraulic valve retention etc.
Various sized rivet nuts are available, see the table below to
determine the size of rivet nut to be used for particular
applications.
If for any reason a new rivet nut requires fitting, then the
correct installation procedure must be followed:
1
Drill a hole in the machine body/framework where the
rivet nut is to be fitted. De-burr hole edges.
2
Screw the rivet nut onto the mandrel of the installation
tool. The bottom of the mandrel should be in line with
the bottom of the rivet nut, shown at A.
3
Wind the body of the installation tool down the
threaded mandrel until it touches the head of the rivet
nut, shown at B.
Insert the rivet nut (assembled to the tool) into the hole
4
drilled in step 1.
5
Hold handle C and at the same time draw the mandrel
into the installation tool by turning nut D. The rivet nut
will contract in length and form an ' upset' (smooth
bulge) seating itself against the body/framework (see
inset E).
Note: The thread of the rivet nut must not be stripped, take
care when 'upsetting' the rivet nut.
6
Remove the installation tool.
Specifications (all dimensions in mm)
Rivet Nut
Rivet Nut
Material
Thread
Outside
Thickness
Diameter
Diameter
M5
7
0.25 - 3.00
3.00 - 5.50
M6
9
0.50 - 3.00
3.00 - 5.50
M8
11
0.50 - 3.00
3.00 - 5.50
M10
13
1.00 - 3.50
3.50 - 6.00
9803/3280
Body & Framework
Service Tools
Rivet
Drill
Length
Hole
(Total)
Dia.
14.00
7.10
17.00
16.00
9.10
19.00
18.00
11.10
21.00
23.00
13.10
26.00
Purchased from www.WorkshopManuals.co.uk
D
Note: In an emergency, and if no installation tool is
available, it is possible to fit a rivet nut by using a nut and
bolt the same thread diameter as the rivet nut being
installed. However, this is not the recommended method.
Section B
1 - 5
A
B
C
E
S150970
Issue 1
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