®
Spiral Mill - Thread Inserts
UN
2
1
Insert Size Fig. Pitch Ext./ Int.
UN
UNC UNF UNS Ordering code Toolholder
TPI
2 1/16 - 2 H45 I 16 UN
16 12
Int. Int. Int. Int. Int. Int. Int. Int. Int. Int. Int.
1 15/16 - 2 1/2 1 15/16 - 2 5/8 2 1/8- 2 5/8 2 1/8- 2 3/4
H45 I 12 UN H45I 8 UN H45I 6 UN H45 I 4.5 UN H45I 4 UN H63 I 16 UN H63 I 12 UN H63I 8 UN H63I 6 UN H63I 4 UN
8 6 4 8 6 4
H45
2
SRH45...
4.5
2 1/4
2 1/2- 2 3/4
16 12
≥2 5/8 ≥2 3/4 ≥2 3/4 ≥2 7/8
H63
2
SRH63...
≥3
Whitworth Same insert for internal and external thread
2
1
Pitch TPI
Insert Size
Fig.
Ordering code
Thread Size
Toolholder SRH13... SRH15... SRH17...
H13- 19 W H15- 14 W H17- 14 W H17- 11 W H19- 14 W H19- 11 W H23-14 W H23-11 W H32-14 W H32-11 W
H13 H15 H17
1 1 1
19 14 14 11 14 11 14 11 14 11
G 3 / 8 G 1 / 2
G
1 / 2 - 5 / 8
G ≥ 1”
G
3 / 4 - 7 / 8
H19
1
SRH19...
G ≥ 1”
Int. G 7 / 8 ” Ext. ≥ G 1 / 2 ” Ext. ≥ G 1 / 2 ” Int. ≥ G 1 Ext. ≥ G 1” ≥ G1" Int. ≥ G 1 Ext. ≥ G 1” Int. ≥ G 2 Ext. ≥ G 1”
H23
2
SRH23...
H32
2
SRH32...
1 / 8 ”
3 / 4 ”
H45-11 W
H45
2
11
SRH45...
1 / 2 ”
H63-11 W
H63
2
11
SRH63...
B04-5
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