Die Head Differences

  • Self-Opening (SO) – Automatic release for repeatable number of threads.
  • Quick-Opening (QO) – Manual release for user-specified thread lengths.
  • Bolt – Specially for bolt threader.
  • Mono – Dedicated to a specific size of thread.
  • Semi-Automatic (SA) – Can be quickly adjusted from size to size with manual release.

Machine NPT Die Heads

Catalog Number
Model No.
Description
How Opened
Thread Direction
Oil Thru Head
Dies Used
Pipe Capacity
Bolt Capacity
Weight
in.
mm
in.
mm
lb.
kg
97065
811A
811A 1/8″ – 2″ NPT, Quick Opening, RH
Q.O
RH
Yes
Univ.
0 – 2
3 – 50
0 – 2
6 – 50
13
5.90
97075
815A
815A 1/8″ – 2″ NPT Die Head, Self-Opening, RH
S.O
RH
Yes
Univ.
0 – 2
3 – 50
0 – 2
6 – 50
13
5.90
84537
816
1/8″ – 3/4″ Semi-Automatic Die Head
S.A
RH
Yes
Univ.
0 – 1
–
–
–
13
5.90
84532
817
1/2″ – 2″ Semi-Automatic Die Head
S.A
RH
Yes
Univ.
1 – 2
–
–
–
13
5.90
23282
842
Universal Die Head
Q.O
LH
Yes
Univ.
0 – 2
–
–
–
12 1/2
6.70
10491
555
555
Q.O
RH
–
Dual/Bolt
0 – 1
–
–
–
8
3.60

Machine BSPT Die Heads

 

Catalog Number
Model No.
Description
How Opened
Thread Direction
Oil Thru Head
Dies Used
Pipe CapacityBolt CapacityWeight
in.
mm
in.
mm
lb.
kg
97070
811A
BSPT Die Head Quick-Open R.H.
Q.O
RH
Yes
Univ.
1/8 – 2
3 – 50
0 – 2
6 – 2
12
5.40
97080
815A
815A 1/8″-2″ BSPT Self-Opening Die Head
S.O
RH
Yes
Univ.
1/8 – 2
3 – 50
0 – 2
6 – 50
13 1/2
5.90
45322
815A
1/8″ – 2″ BSPT, Self-Opening, RH. Eur. RT
–
–
–
–
–
–
–
–
13
5.90
23297
856
British Universal
S.O
LH
Yes
Univ.
1/8 – 2
–
–
–
12 1/2
6.70
10491
555
555
Q.O
RH
–
Dual/Bolt
1/8 – 3/4
–
–
–
8
3.60

Machine Bolt Die Heads

 

Catalog Number
Model No.
Description
How Opened
Thread Direction
Oil Thru Head
Dies Used
Pipe Capacity
Bolt Capacity
Weight
in.
mm
in.
mm
lb.
kg
97045
531
Bolt Die Head Quick-Open R.H./L.H. 1/4″-1″
Q.O
RH/LH
Yes
500B
–
–
0 – 1
–
8
3.60
97050
532
Bolt Die Head Quick-Open R.H./L.H. 1 1/8″-2″
Q.O
RH/LH
Yes
500B
–
–
1 – 2
–
9
4.10

Machine Mono Die Heads

 

Catalog Number
Model No.
Description
How Opened
Thread Direction
Oil Thru Head
Dies Used
Pipe CapacityBolt CapacityWeight
in.
mm
in.
mm
lb.
kg
42047
500A
Mono
Q.O
RH
Yes
Mono
0
–
–
–
6 3/4
3.10
42052
500A
Mono
Q.O
RH
Yes
Mono
0
–
–
–
7
3.20
500A
Mono
Q.O
RH
Yes
Mono
0
–
–
–
7
3.20
42062
500A
Mono
Q.O
RH
Yes
Mono
–
–
–
–
7 1/4
3.30
42067
500A
Mono
Q.O
RH
Yes
Mono
1
–
–
–
7 1/4
3.30
42072
500A
Mono
Q.O
RH
Yes
Mono
1
–
–
–
8
3.60
42077
500A
Mono
Q.O
RH
Yes
Mono
1
–
–
–
8
3.60
42082
500A
Mono
Q.O
RH
Yes
Mono
2
–
–
–
8 1/2
3.90
42087
500A
Mono
Q.O
RH
Yes
Mono
2
–
–
–
8 1/2
3.90
Used On: 1215, 1233, 535, 535A, 1822 Machines and 300, 300 Compact and 300-A w/carriage.
Q.O = Quick-Opening – Manual flip throwout lever retract dies when thread length is cut
S.A. = Semi Automatic (Dies retract automatically on depressing handle)
S.O. = Self-Opening – Trigger foot automatically retracts dies when thread length is cut.
No. 811A Die Head replaces No. 811 and No. 841 Die Heads
No. 815A Die Head replaces No. 815 and No. 845 Die Heads
No. 500A Die Head replaces No. 500 Mono Die Heads.
No. 555 Die Head replaces No. 515
Note: British Die Heads use British Dies only
Note: 531 and 532 Die Heads replace 500B Dia Head
Individual Machine Die Heads do not include Dies

Die Head Racks for All Machine Die Heads

 

Catalog Number
Model No.
Description
Weight
lb.
kg
42485
4U
4 Heads
8 1/2
3.90
42490
6U
6 Heads
12 1/2
5.70