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JIC tube fittings Union Size Chart

Date:Jun 09, 2019

JIC tube fittings size is according to SAE J514 and ISO 8434-4 standards, it is connection from tube to tube.


Union size chart types of hydraulic flare fittings including straight fittings(S), elbow fittings(E), tee fittings(T) and cross fittings(K).  

JIC_tube_fittings_Unions_chart

Dimensions of JIC tube union connectors

JIC_tube_fittings_Unions_Thread_dimensions_chart

Dimensions in millimetres Thread  c d d 1 L 4 L 5 S 2 S 3 Forged connector Connector machined from bar stock Ordering size code  a Tube OD  b ref.  ± 0,8  ± 1  nom.  tol.  max.

6 × 6  6  7/16-20 UNF  4,4  35  22,5  12  12  +0/-0,8  14

8 × 8  8  1/2-20 UNF  6  35  24  14  14  +0/-0,8  17

10 × 10  10  9/16-18 UNF  7,5  36  27  17  14  +0/-0,8  22

12 × 12  12  3/4-16 UNF  9,9  41  32  22  19  +0/-0,8  22

16 × 16  16  7/8-14 UNF  12,3  48  37  24  22  +0/-0,8  32

20 × 20  20  1 1/16-12 UN  15,5  55  42  30  27  +0/-1,0  36

25 × 25  25  1 5/16-12 UN  21,5  57  46  36  32  +0/-1,0  41

32 × 32  32  1 5/8-12 UN  27,5  61,5  52,5  46  41  +0/-1,0  55

38 × 38  38  1 7/8-12 UN  33,5  70  59  50  50  +0/-1,0  60

50 × 50  50  2 1/2-12 UN  45  86,5  77,5  65  65  +0/-1,0  80

a Code given is for straights and elbows. Add third and fourth sizes for tees and crosses using left, right, up-and-down sequence omitting ends when not present.

b See Table 1 for corresponding inch sizes.

c In accordance with ISO 263, ISO 68-2 and ISO 5864.



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