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To find the correct part number of a mandrel for a particular application, read the instructions below after you have gathered the
following information as per example alongside. Answers for the example are shown in
FASTENER NAME
FASTENER SIZE
DATASHEET
APPLICATION HOLE SIZE
CLEARANCE BEHIND APPLICATION
'REF.Nº' FROM NOSE JAW SELECTION TABLE
■
Subtract the minimum hole size recommended (AS REC.) in the fastener datasheet from the actual application hole size.
■
Turn to the page with the 'Mandrel Selection' table for your fastener, selecting either the imperial or the metric dimensions table
(pages 15 to 20).
-example: page 15.
■
Starting in the 'Standard Mandrel - Green' section, find your fastener size in the left hand column.
■
If you selected a nose jaw which can place your fastener, you should now be able to find a line within your fastener section with
the same 'Ref. Nº' as that from the 'Nose Jaw Selection' table.
This is your line 'REF. Nº' in which you will find both your mandrel and mandrel follower spring part number. This line continues
into the second half of the table for '2nd' and '3rd' oversize mandrels.
■
Scan along that line to the 'hole size' columns and select whichever is nearest or equal to the figure calculated in step one. You may
now read the mandrel part number next to the 'hole size'.
■
For Chobert and Grovit only, most mandrels are also available in a 'short reach' version (see illustration on page 18). Short reach
mandrels are used to minimise the possibility of the mandrel head contacting a rear obstruction. This would result in the underside
of the fastener head not seating properly on the application surface, causing a lack of clench in the joint.
■
Whichever size of mandrel you settle on, you will also need to check that the 'P' figure against that mandrel is adequate. 'P' is the
clearance required for the mandrel head at the back of the application IN ADDITION to the length of the fastener protruding through
the application, as shown in the drawing on page 18.
■
You may now read the corresponding mandrel follower spring part number in the right-hand column of the table.
In all cases, satisfactory clenching of the joint should be assessed particularly if the size of the hole in your application is very close
to the next oversize hole condition, when it will be safe to select the greater size of mandrel to obtain a higher clench. REMEMBER that
this will increase the broach load and reduce the mandrel life.
BRIV
For mandrel or mandrel follower spring selection, follow instructions above.
REF.
HOLE
FASTENER
Nº
SIZE
13
AS REC.
3/32" BRIV
Brass only
14
AS REC.
15
AS REC.
1/8" BRIV
Al. Alloy,
16
AS REC.
Brass, Steel
17
AS REC.
5/32" BRIV
Al. Alloy,
18
Brass, Steel
AS REC.
19
AS REC.
5/32" BRIV
St.Steel only
20
AS REC.
21
3/16" BRIV
AS REC.
Al. Alloy,
22
Brass, Steel
AS REC.
23
AS REC.
3/16" BRIV
St.Steel only
24
AS REC.
REF.
HOLE
FASTENER
Nº
SIZE
13
+.008
3/32" BRIV
Brass only
14
+.008
15
+.010
1/8" BRIV
Al. Alloy,
16
+.010
Brass, Steel
17
+.010
5/32" BRIV
Al. Alloy,
18
+.010
Brass, Steel
19
-
5/32" BRIV
St.Steel only
20
-
21
+.010
3/16" BRIV
Al. Alloy,
Brass, Steel
22
+.010
23
-
3/16" BRIV
St.Steel only
24
-
example
STANDARD MANDREL - GREEN
HEAD
MANDREL
Ø
PART Nº
.072
07150-06013
.072
07150-06013
.092
07271-06414
.092
07271-07414
.110
07150-06015
.110
07150-07015
.120
07170-06805
.120
07170-07805
.141
07150-06016
.141
07150-07016
.153
07170-06806
.153
07170-07806
2ND OVERSIZE MANDREL - BLUE
HEAD
MANDREL
Ø
PART Nº
.079
07150-06213
.079
07150-06213
.102
07271-06614
.102
07271-07614
.120
07150-06215
.120
07150-07215
-
-
-
-
.151
07150-06216
.151
07150-07216
-
-
-
-
grey
Chobert
1/8"
Series 1125
0.1335"
Infinite
5 (standard flat)
-example: 5.
-example: 07150-06104.
1ST OVERSIZE MANDREL - YELLOW
HOLE
P
HEAD
SIZE
MAX.
Ø
.119
+.004
.076
.119
+.004
.076
.120
+.005
.097
.120
+.005
.097
.136
+.005
.115
.136
+.005
.115
.126
+.005
.125
.126
+.005
.125
.157
+.005
.146
.157
+.005
.146
.150
+.005
.158
.150
+.005
.158
3RD OVERSIZE MANDREL - RED
HOLE
P
HEAD
SIZE
MAX.
Ø
.126
-
-
.126
-
-
.133
-
-
.133
-
-
.149
-
-
.149
-
-
-
-
-
-
-
-
.170
+.012
.153
.170
+.012
.153
-
-
-
-
-
-
italic.
-example: 0.005.
-example: 1/8" Chobert & Grovit.
-example: 07150-06804.
MANDREL
P
PART Nº
MAX.
07150-06113
.123
07150-06113
.123
07271-06514
.126
07271-07514
.126
07150-06115
.142
07150-07115
.142
07170-06825
.132
07170-07825
.132
07150-06116
.164
07150-07116
.164
07170-06826
.156
07170-07826
.156
MANDREL
P
PART Nº
MAX.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
07150-06316
.173
07150-07316
.173
-
-
-
-
IMPERIAL
SPRING
PART Nº
07170-06873
07170-06903
07150-06814
07150-07814
07170-06875
07170-07875
07170-06875
07170-07875
07170-06876
07170-07876
07170-06876
07170-07876
SPRING
PART Nº
07170-06873
07170-06903
07150-06814
07150-07814
07170-06875
07170-07875
-
-
07170-06876
07170-07876
-
-
17
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