Cut Sheet

4.7
threading
See page 4.12
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
1-11½ 1
1
⁄
4
-11½ 1
1
⁄
2
-11½ 2-11½
(NPT) National Pipe Taper
Alloy RH 37810 37815 37820 37825 37830 37835 37840 37845 37850
High-Speed
RH 37855 37860 37865 37870 37875 37880 37885 37890 37895
High-Speed LH – 38050 38055 38060 38065 38070 38075 38080 38085
H.S. For Stainless Steel RH 37900 37905 37910 37915 37920 37925 37930 37935 37940
H.S. For PVC RH ––70685 70690 70695 70700 70705 70710 70715
HS Reversible RH* –––49707 49712 49717 49722 49727 –
(NPSM) National Pipe Straight Mechanical
Alloy RH 37945 37950 37955 37960 37965 37970 37975 37980 37985
(API) American Petroleum Institute***
High-Speed RH 70720 70725 70730
(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
Alloy RH 45848 45853 45858 45863 45868 45873 45878 45883 45888
High-Speed RH 66310 66315 66320 66325 66330 66335 66340 66345 66350
High-Speed LH 66405 66410 66415 66420 66425 66430 66435 – 66445
HS Reversible RH* ––56337 56342 56347 56352 ––56367
(BSPP) British Standard Pipe Parallel**
Alloy RH 66190 66195 66200 66205 66210 66215 66220 66225 66230
* Dies can be reversed in die head for close-to-wall threading.
** Requires British Die Head.
*** Requires API Die Head.
Pipe Dies
Selection: Models OO-R, 11-R, 12-R, O-R,
Ratchet Threaders or 30A, 31A 3-Way Pipe Threaders
ISO
International Standards Organization
Nominal Conduit Size in mm – Thread Pitch in mm
20-1.5 25-1.5 32-1.5 40-1.5
Alloy RH 85830 76305 85835 76315
Requires
11-R ISO Die Head, see page 4.6.
BEC
British Electrical Conduit (1)
Nominal Conduit Size – Threads Per Inch
1
⁄
2
-18
5
⁄
8
-18
3
⁄
4
-16 1-16 1
1
⁄
4
-16 1
1
⁄
2
-14
Alloy RH 66155 66160 ––66175 –
(1)
Requires 11-R BEC Die Head.
Bolt Threaders Button Dies
Selection: Model OO-RB Ratchet Bolt Threaders,
or 31B, 33B, 35B, 37B 3-Way Bolt Threaders
Die Material or Type
Catalog No.
Rod Diameter – Threads Per Inch
(UNC) Unified National Course
1
⁄
4
-20
5
⁄
16
-18
3
⁄
8
-16
7
⁄
16
-14
1
⁄
2
-13
9
⁄
16
-12
5
⁄
8
-11
3
⁄
4
-10
7
⁄
8
-9 1-8
Alloy
RH
38335 38340 38345 38350 38355 38360 38365 38370 38375 38380
(UNF)
Unified National Fine
1
⁄
4
-28
5
⁄
16
-24
3
⁄
8
-24
7
⁄
16
-20
1
⁄
2
-20
9
⁄
16
-18
5
⁄
8
-18
3
⁄
4
-16
7
⁄
8
-14 1-12
Alloy RH 38385 38390 38395 38400 38405 38410 38415 38420 38425 15317