17
FASTENER
13
14
15
16
17
18
19
20
21
22
23
24
P
MAX.
SPRING
PART Nº
STANDARD MANDREL - GREEN
HOLE
SIZE
1ST OVERSIZE MANDREL - YELLOW
3/32" BRIV
Brass only
1/8" BRIV
Al. Alloy,
Brass, Steel
5/32" BRIV
Al. Alloy,
Brass, Steel
5/32" BRIV
St.Steel only
3/16" BRIV
Al. Alloy,
Brass, Steel
3/16" BRIV
St.Steel only
.119
.119
.120
.120
.136
.136
.126
.126
.157
.157
.150
.150
MANDREL
PART Nº
07150-06013
07150-06013
07271-06414
07271-07414
07150-06015
07150-07015
07170-06805
07170-07805
07150-06016
07150-07016
07170-06806
07170-07806
AS REC.
AS REC.
AS REC.
AS REC.
AS REC.
AS REC.
AS REC.
AS REC.
AS REC.
AS REC.
AS REC.
AS REC.
HEAD
Ø
.072
.072
.092
.092
.110
.110
.120
.120
.141
.141
.153
.153
P
MAX.
HOLE
SIZE
.123
.123
.126
.126
.142
.142
.132
.132
.164
.164
.156
.156
MANDREL
PART Nº
07150-06113
07150-06113
07271-06514
07271-07514
07150-06115
07150-07115
07170-06825
07170-07825
07150-06116
07150-07116
07170-06826
07170-07826
+.004
+.004
+.005
+.005
+.005
+.005
+.005
+.005
+.005
+.005
+.005
+.005
HEAD
Ø
.076
.076
.097
.097
.115
.115
.125
.125
.146
.146
.158
.158
07170-06873
07170-06903
07150-06814
07150-07814
07170-06875
07170-07875
07170-06875
07170-07875
07170-06876
07170-07876
07170-06876
07170-07876
FASTENER
13
14
15
16
17
18
19
20
21
22
23
24
P
MAX.
SPRING
PART Nº
2ND OVERSIZE MANDREL - BLUE
HOLE
SIZE
3RD OVERSIZE MANDREL - RED
3/32" BRIV
Brass only
1/8" BRIV
Al. Alloy,
Brass, Steel
5/32" BRIV
Al. Alloy,
Brass, Steel
5/32" BRIV
St.Steel only
3/16" BRIV
Al. Alloy,
Brass, Steel
3/16" BRIV
St.Steel only
.126
.126
.133
.133
.149
.149
-
-
.170
.170
-
-
MANDREL
PART Nº
07150-06213
07150-06213
07271-06614
07271-07614
07150-06215
07150-07215
-
-
07150-06216
07150-07216
-
-
+.008
+.008
+.010
+.010
+.010
+.010
-
-
+.010
+.010
-
-
HEAD
Ø
.079
.079
.102
.102
.120
.120
-
-
.151
.151
-
-
P
MAX.
HOLE
SIZE
-
-
-
-
-
-
-
-
.173
.173
-
-
MANDREL
PART Nº
-
-
-
-
-
-
-
-
07150-06316
07150-07316
-
-
-
-
-
-
-
-
-
-
+.012
+.012
-
-
HEAD
Ø
-
-
-
-
-
-
-
-
.153
.153
-
-
07170-06873
07170-06903
07150-06814
07150-07814
07170-06875
07170-07875
-
-
07170-06876
07170-07876
-
-
REF.
Nº
REF.
Nº
BRIV IMPERIAL
For mandrel or mandrel follower spring selection, follow instructions above.
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 grey italic.
FASTENER NAME example Chobert
FASTENER SIZE 1/8”
DATASHEET Series 1125
APPLICATION HOLE SIZE 0.1335”
CLEARANCE BEHIND APPLICATION Infinite
‘REF.Nº’ FROM NOSE JAW SELECTION TABLE 5 (standard flat)
Subtract the minimum hole size recommended (AS REC.) in the fastener datasheet from the actual application hole size. -example: 0.005.
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. -example:1/8”Chobert & Grovit.
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. -example: 5.
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’. -example: 07150-06104.
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. -example:07150-06804.
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.
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