# S/R: Short Reach Mandrel. See page 17 and 18 for explanation.
Tables below left and right and over the next 4 pages list part numbers of all mandrels and mandrel follower springs available per
fastener or group of fasteners, i.e. for Chobert and Grovit on these pages.
While fastener sizes are always shown in their specified units, each table has been produced twice to offer dimensions in imperial units
on the left-hand page then in metric units on the right-hand page. These 'Mandrel Selection' tables cross-reference with the 'Nose Jaw
Selection' tables on pages 13 and 14 through the ‘Ref. Nº’ column.
It is the diameter of the head at the end of a mandrel which when pulled through controls the expansion of the fastener body.
While there are different head shapes to suit different types of fasteners (see illustration on page 18), progressive head sizes are needed
to reflect manufacturing tolerances on the diameter of the hole in your application so that the fastener always expands sufficiently to
fill the hole.
Too large a mandrel head would overstress the mandrel and mandrels which fail during use could forcibly exit the tool.
Selection tables are arranged into four 'mandrel size' sections, ranging from 'standard’ to '3rd oversize', each being colour coded as
per the end of the mandrel heads themselves.
16
FASTENER
1
1
2
2
3
3
4
5
6
7
7
8
8
9
9
10
10
11
12
P
MAX.
SPRING
PART Nº
STANDARD MANDREL - GREEN
HOLE
SIZE
1ST OVERSIZE MANDREL - YELLOW
3/32" CHOBERT
& GROVIT
1/8" CHOBERT
& GROVIT
5/32" CHOBERT
& GROVIT
3/16" CHOBERT
& GROVIT
1/4" CHOBERT
4.22
-
4.22
-
4.22
-
4.22
5.49
5.49
6.20
-
6.20
-
6.27
-
6.27
-
6.81
6.81
P
MAX.
1.80
-
1.80
-
1.80
-
1.80
2.29
2.29
2.54
-
2.54
-
2.59
-
2.59
-
2.79
2.79
MANDREL
PART Nº
07150-06003
-
07150-06003
-
07150-06003
-
07150-07003
07150-06004
07150-07004
07150-06005
-
07150-07005
-
07150-06006
-
07150-07006
-
07150-06008
07150-07008
# S/R MANDREL
PART Nº
07150-08003
-
07150-08003
-
07150-08003
-
07150-09003
07150-08004
07150-09004
07150-08005
-
07150-09005
-
07150-08006
-
07150-09006
-
07150-08008
07150-09008
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
1.84
-
1.84
-
1.84
-
1.84
2.24
2.24
2.72
-
2.72
-
3.35
-
3.35
-
4.67
4.67
P
MAX.
HOLE
SIZE
4.42
-
4.42
-
4.42
-
-
6.02
6.02
7.21
-
7.21
-
8.13
-
8.13
-
8.38
8.38
P
MAX.
-
1.98
-
1.98
-
1.98
1.98
2.49
2.49
2.95
-
2.95
-
3.30
-
3.30
-
3.40
3.40
MANDREL
PART Nº
07150-06303
-
07150-06303
-
07150-06303
-
-
07150-06104
07150-07104
07150-06105
-
07150-07105
-
07150-06106
-
07150-07106
-
07150-06108
07150-07108
# S/R MANDREL
PART Nº
-
07150-08103
-
07150-08103
-
07150-08103
07150-09103
07150-08104
07150-09104
07150-08105
-
07150-09105
-
07150-08106
-
07150-09106
-
07150-08108
07150-09108
+.04
+.09
+.04
+.09
+.04
+.09
+.09
+.10
+.10
+.20
-
+.20
-
+.35
-
+.35
-
+.30
+.30
HEAD
Ø
1.88
1.93
1.88
1.93
1.88
1.93
1.93
2.34
2.34
2.92
-
2.92
-
3.71
-
3.71
-
4.98
4.98
07150-06803
07150-06803
07170-06873
07170-06873
07170-06903
07170-06903
07150-07803
07150-06804
07150-07804
07170-06875
-
07170-07875
-
07170-06876
-
07170-07876
-
07150-06808
07150-07808
FASTENER
1
1
2
2
3
3
4
5
6
7
7
8
8
9
9
10
10
11
12
P
MAX.
SPRING
PART Nº
2ND OVERSIZE MANDREL - BLUE
HOLE
SIZE
3RD OVERSIZE MANDREL - RED
3/32" CHOBERT
& GROVIT
1/8" CHOBERT
& GROVIT
5/32" CHOBERT
& GROVIT
3/16" CHOBERT
& GROVIT
1/4" CHOBERT
4.70
-
4.70
-
4.70
-
4.70
6.81
6.81
8.13
-
8.13
-
-
9.45
-
9.45
-
-
P
MAX.
-
-
-
-
-
-
-
2.79
2.79
3.30
-
3.30
-
-
3.81
-
3.81
-
-
MANDREL
PART Nº
07150-06103
-
07150-06103
-
07150-06103
-
07150-07103
07150-06204
07150-07204
07150-06205
-
07150-07205
-
-
07150-06206
-
07150-07206
-
-
# S/R MANDREL
PART Nº
-
-
-
-
-
-
-
07150-08204
07150-09204
07150-08205
-
07150-09205
-
-
07150-08206
-
07150-09206
-
-
+.09
-
+.09
-
+.09
-
+.09
+.25
+.25
+.38
-
+.38
-
-
+.60
-
+.60
-
-
HEAD
Ø
1.93
-
1.93
-
1.93
-
1.93
2.49
2.49
3.10
-
3.10
-
-
3.96
-
3.96
-
-
P
MAX.
HOLE
SIZE
-
-
-
-
-
-
-
7.32
7.32
-
9.45
-
9.45
-
-
-
-
-
-
P
MAX.
-
-
-
-
-
-
-
3.00
3.00
-
3.81
-
3.81
-
-
-
-
-
-
MANDREL
PART Nº
-
-
-
-
-
-
-
07150-06304
07150-07304
-
07150-06305
-
07150-07305
-
-
-
-
-
-
# S/R MANDREL
PART Nº
-
-
-
-
-
-
-
07150-08304
07150-09304
-
07150-08305
-
07150-09305
-
-
-
-
-
-
-
-
-
-
-
-
-
+.35
+.35
-
+.63
-
+.63
-
-
-
-
-
-
HEAD
Ø
-
-
-
-
-
-
-
2.59
2.59
-
3.35
-
3.35
-
-
-
-
-
-
07150-06803
-
07170-06873
-
07170-06903
-
07150-07803
07150-06804
07150-07804
07170-06875
07150-06805
07170-07875
07150-07805
-
07150-06806
-
07150-07806
-
-
REF.
Nº
REF.
Nº
CHOBERT AND GROVIT METRIC
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