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Y<br />
Y<br />
British Buttress<br />
<strong>Thread</strong>ing<br />
Inserts<br />
External<br />
X<br />
0.2754P<br />
45°<br />
Internal<br />
7°<br />
h<br />
L<br />
<strong>Thread</strong>ing<br />
Holders<br />
0.2754P<br />
External<br />
IC<br />
Defined by: B.S. 1657: 1950<br />
Tolerance class: Medium Class<br />
Standard<br />
3/8”<br />
1/2”<br />
Standard<br />
Insert Size Pitch Ordering Code<br />
Dimensions mm Anvil<br />
IC L mm tpi<br />
RH<br />
LH<br />
h min X Y RH LH Toolholder<br />
16<br />
22<br />
16<br />
12<br />
10<br />
8<br />
8<br />
3ER16BBUT...<br />
3ER12BBUT...<br />
3ER10BBUT...<br />
3ER8BBUT...<br />
4ER8BBUT...<br />
3EL16BBUT...<br />
3EL12BBUT...<br />
3EL10BBUT...<br />
3EL8BBUT...<br />
4EL8BBUT...<br />
0.80<br />
1.07<br />
1.28<br />
1.61<br />
1.61<br />
1.1<br />
1.4<br />
1.4<br />
1.6<br />
1.6<br />
1.6<br />
2.1<br />
2.2<br />
2.5<br />
2.5<br />
YE3<br />
YE4<br />
YI3<br />
YI4<br />
AL..-3 (LH)<br />
AL..-4 (LH)<br />
<strong>Thread</strong>ing<br />
Technical Data<br />
Grooving<br />
Inserts<br />
British Buttress<br />
Internal<br />
X<br />
Grooving<br />
Holders<br />
0.2754P<br />
45°<br />
Internal<br />
7°<br />
h<br />
L<br />
0.2754P<br />
External<br />
Defined by: B.S. 1657: 1950<br />
Tolerance class: Medium Class<br />
IC<br />
Standard<br />
Grooving<br />
Technical Data<br />
Standard<br />
3/8”<br />
1/2”<br />
Insert Size Pitch Ordering Code<br />
Dimensions mm Anvil<br />
IC L mm tpi<br />
RH<br />
LH<br />
h min X Y RH LH Toolholder<br />
16<br />
22<br />
16<br />
12<br />
10<br />
8<br />
8<br />
3IR16BBUT...<br />
3IR12BBUT...<br />
3IR10BBUT...<br />
3IR8BBUT...<br />
4IR8BBUT...<br />
3IL16BBUT...<br />
3IL12BBUT...<br />
3IL10BBUT...<br />
3IL8BBUT...<br />
4IL8BBUT...<br />
0.80<br />
1.07<br />
1.28<br />
1.61<br />
1.61<br />
1.1<br />
1.4<br />
1.4<br />
1.6<br />
1.6<br />
1.6<br />
2.1<br />
2.2<br />
2.5<br />
2.5<br />
YI3<br />
YI4<br />
YE3<br />
YE4<br />
AVR..-3 (LH)<br />
AVR..-4 (LH)<br />
Boring<br />
Inserts<br />
Boring<br />
Holders<br />
82<br />
Boring<br />
Technical Data