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.  1/8 - 2  3 - 50  1/4 - 2  6 - 50  13  5.9 
97075 815A  815A 1/8" - 2" NPT Die Head, Self-Opening, RH  S.O  RH  Yes  Univ.  1/8 - 2  3 - 50  1/4 - 2  6 - 50  13  5.9 
84537 816  1/8" - 3/4" Semi-Automatic Die Head  S.A  RH  Yes  Univ.  1/8 - 3/4  13  5.9 
84532 817  1/2" - 2" Semi-Automatic Die Head  S.A  RH  Yes  Univ.  1 - 2  13  5.9 
23282 842  Universal Die Head  Q.O  LH  Yes  Univ.  1/8 - 2  12 1/2  5.7 
10491 555  555  Q.O  RH  Yes  Dual/Bolt  1/8 - 3/4  3.6 

Machine BSPT 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
97070 811A  BSPT Die Head Quick-Open R.H.  Q.O  RH  Yes  Univ.  1/8 - 2  3 - 50  0 - 2  6 - 2  12 1/2  5.7 
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  5.9 
23297 856  British Universal  S.O  LH  Yes  Univ.  1/8 - 2  12 1/2  5.7 
10491 555  555  Q.O  RH  Yes  Dual/Bolt  1/8 - 3/4  3.6 

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  1/4 - 1  3 - 25  3.6 
97050 532  Bolt Die Head Quick-Open R.H./L.H. 1 1/8"-2"  Q.O  RH/LH  Yes  500B  1 1/8 - 2  29 - 51  4.1 

Machine Mono 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
42047 500A  Mono  Q.O  RH  Yes  Mono  1/8  6 3/4  3.1 
42052 500A  Mono  Q.O  RH  Yes  Mono  1/4  3.2 
42057 500A  Mono  Q.O  RH  Yes  Mono  3/8  10  3.2 
42062 500A  Mono  Q.O  RH  Yes  Mono  1/2  13  7 1/4  3.3 
42067 500A  Mono  Q.O  RH  Yes  Mono  3/4  19  7 1/4  3.3 
42072 500A  Mono  Q.O  RH  Yes  Mono  25  3.6 
42077 500A  Mono  Q.O  RH  Yes  Mono  1 1/4  29  3.6 
42082 500A  Mono  Q.O  RH  Yes  Mono  1 1/2  38  8 1/2  3.9 
42087 500A  Mono  Q.O  RH  Yes  Mono  51  8 1/2  3.9 

Die Head Racks for All Machine Die Heads

Catalog Number Model No. Description Weight
lb. kg
42485 4U  4 Heads  8 1/2  3.9 
42490 6U  6 Heads  12 1/2  5.7 

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