Pipe Dies Selection Chart

Pipe Dies Selection Chart

OO-R, 11-R, 12-R, O-R,
Ratchet Threaders or 30A, 31A 3-Way Pipe Threaders

Click on catalog number for ordering information
Die Material or Type
Catalog No.
Nominal Pipe Size - Threads Per Inch
1/8-27
1/4-18
3/8-18
1/2-14
3/4-14
1-11 1/2
1 1/4-11 1/2
1 1/2-11 1/2
2-11 1/2
(NPT) National Pipe Taper
H.S. for Stainless Steel RH
H.S. for PVC RH
-
-
HS Reversible RH*
-
-
-
-
(NPSM) National Pipe Straight Mechanical
(API) American Petroleum Institute***
High Speed RH
 
 
 
 
 
 
(BSPT) British Standard Pipe Taper**
1/8-28
1/4-19
3/8-19
1/2-14
3/4-14
1-11
1 1/4-11
1 1/2-11
2-11
HS Reversible RH*
-
-
-
-
High Speed for Plastic Coated
-
-
-
(BSPP) British Standard Pipe Parallel**

* Dies can be reversed in die head for close to wall threading.
** Requires British Die Head
*** Requires API Die Head