®
Thread Turning Inserts
Chasers
API Buttress Casing
EXTERNAL Ordering Code 20 ER 5 BUT 0.75R 20 ER 5 BUT 0.75F
Pitch TPI
Taper IPF
No. of Teeth
L
X
Y
T
A
5 5
20 20
0.75 0.75
15.692 4.84 15.875 2.3
4.76 4.76
6° 6°
3 4
Order example: 20 ER 5 BUT 0.75F BMA
Chasers
OTTM Buttress Casing
EXTERNAL Ordering Code
Pitch TPI
Taper IPF
No. of Teeth
L
X
Y
T
A
20 ER 5 OTTM 0.75R 20 ER 5 OTTM 0.75F
5 5
20 20
0.75 0.75
15.692 4.79 15.909 2.25
4.76 4.76
6° 6°
3 4
Chasers to be used with compatible holders on the market Order example: 20 ER 5 OTTM 0.75F BMA
For carbide grade see page A04-2
A01-41
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