General Information Tubing Selection Stud Forms Tightening Torques Installation Index

STUDS AND PORT FORMS

METRIC ISO THREAD : DIN 3852, Part 1
BSP THREAD : DIN 3852, Part 2
Studs And Port Forms
PARALLEL THREAD METRIC D1 D4+0.4 D5 Hmax B1min B2min W
M10 x 1 14 15 14 1 8 13.5 0.1
M12 x 1.5 17 18 17 1.5 12 18.5 0.1
M14 x 1.5 19 20 19 1.5 12 18.5 0.1
M16 x 1.5 21 22 21.9 1.5 12 18.5 0.1
M18 x 1.5 23 24 23.9 2 12 18.5 0.1
M20 x 1.5 25 26 25.9 2 14 20.5 0.1
M22 x 1.5 27 28 27 2.5 14 20.5 0.1
M26 x 1.5 31 32 31.9 2.5 16 22.5 0.2
M27 x 2 32 33 32 2.5 16 24 0.2
M33 x 2 39 40 39.9 2.5 18 26 0.2
M42 x 2 49 50 49.9 2.5 20 28 0.2
M48 x 2 55 56 55 2.5 22 30 0.2
PARALLEL THREAD BSP D1 D4+0.4 D5 Hmax B1min B2min W
G 1/8 14 15 14 1 8 13 0.1
G 1/4 18 19 18.9 1.5 12 18.5 0.1
G 3/8 22 23 22 2 12 18.5 0.1
G 1/5 26 27 26.9 2.5 14 22 0.1
G 3/4 32 33 32 2.5 16 24 0.2
G 1 39 40 39.9 2.5 18 27 0.2
G 1-1/4 49 50 49.9 2.5 20 39 0.2
G 1-1/2 55 56 55 2.5 22 31 0.2
For female threads, A does not apply
Studs And Port Forms
TAPER THREAD METRIC
TAPER THREAD METRIC B3min B4min
10 x 1 5.5 10
12 x 1.5 8.5 13.5
14 x 1.5 8.5 13.5
16 x 1.5 8.5 13.5
18 x 1.5 8.5 13.
20 x 1.5 10.5 15.5
22 x 1.5 10.5 15.5
TAPER THREAD BSPT
TAPER THREAD BSPT B3min B4min
R 1/8 5.5 9.5
R 1/4 8.5 13.5
R 3/8 8.5 13.5
R 1/2 10.5 16.5
For Effective Sealing of all taper pipe threads, we recommend to use PTFE tape.

Instructions : Clean both male and female taper threads. Two wraps of PTFE tape are suggested in the direction of male tapered thread spiral for proper make up.

STUDS AND PORT FORMS

METRIC ISO THREAD : DIN 3852, Part 3, ISO 6149
UNF / UN THREAD : SAE J 514,
NPT THREAD : ANSI/ASME B1.20.1
Studs And Port Forms
PARALLEL THREAD METRIC D1 D2 min. D4 D5+0.1 Amax B1min B2min B5 ±10
M10 x 1 12.9 20 13 11.1 1 10 11.5 1.6 120
M12 x 1.5 16.9 22 16 13.8 1.5 11.5 14 2.4 150
M14 x 1.5 18.9 25 18 15.8 1.5 11.5 14 2.4 150
M16 x 1.5 20.9 27 20 17.8 1.5 13 15.5 2.4 150
M18 x 1.5 22.9 29 22 19.8 2 14.5 16.5 2.4 150
M20 x 1.5 24.9 32 24 21.8 2 14 16.5 2.4 150
M22 x 1.5 26.9 34 26 23.8 2 15.5 18 2.4 150
M26 x 1.5 30.9 37 31 29.05 2 16 18.5 3.1 150
M27 x 2 31.9 40 32 29.4 2 19 22 3.1 150
M33 x 2 37.9 46 38 35.4 2.5 19 22 3.1 150
M42 x 2 47.9 56 47 44.4 2.5 19.5 2.5 3.1 150
M48 x 2 54.9 64 53 50.4 2.5 22 2.5 3.1 150
PARALLEL THREAD UN/UNF D1 D2min D4 D5+0.1 Amax B1min B2min B5 α ±10
7/16-20 UNF 14.4 21 15 12.4 1.6 11.5 14 2.4 120
9/16-18 UNF 17.6 25 18 15.6 1.6 12.7 15.5 2.5 120
3/4-16 UNF 22.3 30 23 20.6 2.4 14.3 17.5 2.5 150
7/8-14 UNF 25.5 34 23 23.9 2.4 16.7 20 2.5 150
1-1/16-12 UNF 31.9 41 32 29.2 2.4 19 23 3.3 150
1-5/16-12 UNF 38.2 49 39 35.5 3.2 19 23 3.3 150
1-5/8-12 UNF 47.7 58 48 43.5 3.2 19 23 3.3 150
Tolerance for Male Stud thread : Class 2A
Tolerance for Female thread : Class 2B
Studs And Port Forms
TAPER THREAD METRIC
TAPER THREAD METRIC B3min B2min
1/8-27 NPT 6.9 11.6
1/4-18 NPT 10 16.4
3/8-18 NPT 10.3 17.4
1/2-14 NPT 13.6 22.6
3/4-4 NPT 14.1 23.1
1-11.5 NPT 16.8 27.8
1-1/4-11.5 NPT 17.3 28.3
1-1/2-11.5 NPT 17.3 28.3
For Effective Sealing of all taper pipe threads, we recommend to use PTFE tape.

Instructions : Clean both male and female taper threads. Two wraps of PTFE tape are suggested in the direction of male tapered thread spiral for proper make up.