GOST 8959-75
GOST 8959−75 Connecting parts from malleable cast iron with cylindrical thread for pipelines. Nut coupling. Main dimensions (with Change No. 1)
GOST 8959−75
Group B61
INTERSTATE STANDARD
CONNECTING PARTS FROM MALLEABLE CAST IRON WITH CYLINDRICAL THREAD FOR PIPELINES. THE NUTS OF THE CONNECTING
Basic dimensions
Ductile iron fittings with parallel thread for pipelines. Connection nuts. Basic dimensions
ISS 23.040.60
Date of introduction 1977−01−01
The decision of the State standards Committee of the Council of Ministers of the USSR from
Limitation of actions taken by Protocol No. 2−92 of the Interstate Council for standardization, Metrology and certification (ICS 2−93)
REPLACE GOST 8959−59
EDITION (September 2010) with amendment No. 1, approved in September 1980 (IUS sizes 11−80), Amendment (I & C 9−2004)
1. The principal dimensions of the screws shall be as specified in the drawing and in the table.
Drawing. The principal dimensions of the screws
Note. The drawing does not define the design of the nut.
Dimensions in mm
Us- |
Thread |
Swivel nut |
The size of the «turnkey» | The diameter of the strip | Weight without cover TIA, kg, not more* | |||||||||||||||||||
Thread |
The size of the «turnkey" |
|||||||||||||||||||||||
| on- Rouge Noah |
internal Ren- it | |||||||||||||||||||||||
| 8 |
G |
G |
10 | 18 | 32 | 30,0 | 4 | 22,0 | 21,7 | 16,7 | 17 | 24,0 | 19 | 17,7 | 3,5 | 2,5 | 2,5 | 5 | 42 | 21,0 | 21,0 | 24 | 17 | 0,216 |
| 10 |
G |
G |
10 | 18 | 36 | 34,0 | 4 | 25,0 | 24,7 | 18,7 | 19 | 27,5 | 22 | 20,7 | 3,5 | 2,5 | 2,5 | 5 | 45 | 24,0 | 23,0 | 27 | 19 | 0,282 |
| 15 |
G |
G 1 |
11 | 19 | 46 | 44,0 | 4 | 32,0 | 31,7 | 23,7 | 24 | 34,5 | 27 | 25,7 | 4,0 | 3,0 | 2,5 | 5 | 48 | 25,0 | 25,0 | 34 | 24 | 0,464 |
| 20 |
G |
G 1 |
12 | 20 | 50 | 48,0 | 4 | 36,0 | 35,6 | 26,6 | 27 | 38,5 | 32 | 30,0 | 4,0 | 3,0 | 2,5 | 5 | 52 | 27,0 | 27,0 | 38 | 27 | 0,588 |
| 25 |
G 1 — B | G 1 |
13 | 23 | 65 | 62.6 per | 5 | 48,0 | 47,6 | 37,6 | 38 | 50,5 | 41 | 39,0 | 5,0 | 4,0 | 3,0 | 6 | 58 | 31,5 | 29,5 | 50 | 38 | 1,091 |
| 32 |
G 1 |
G-2 — B | 13 | 24 | 70 | 67,2 | 6 | 53,0 | 52,6 | 41,6 | 42 | 56,0 | 50 | 48,0 | 5,0 | 4,0 | 3,0 | 7 | 65 | 35,0 | 33,0 | 55 | 42 | 1,423 |
| 40 |
G 1 |
G 2 |
14 | 25 | 75 | 72,2 | 6 | 59,5 | 59,1 | 45,5 | 46 | 62,5 | 55 | 52,6 | 5,0 | 4,0 | 3,0 | 7 | 70 | 37,0 | 36,0 | 62 | 46 | 1,702 |
| 50 |
G-2 — B | G 2 |
16 | 27 | 90 | 87,2 | 6 | 74,0 | 73,6 | 59,6 | 60 | 78,0 | 66 | 65,0 | 6,0 | 5,0 | 3,0 | 7 | 78 | 41,5 | 40,5 | 77 | 60 | 2,522 |
| (65) |
G 2 |
G 3 |
19 | 30 | 110 | 107,0 | 6 | 92,0 | 91,5 | 74,5 | 75 | 97,0 | 83 | 81,8 | 6,0 | 5,0 | 3,0 | 7 | 85 | 44,0 | 45,0 | 96 | 75 | 4,078 |
| (80) |
G 3 — | G 4 — B | 20 | 31 | 130 | 127,0 | 6 | 104,5 | 104,0 | 87,5 | 88 | 109,5 | 96 | 94,6 | 6,0 | 5,0 | 3,0 | 8 | 95 | 48,5 | 50,5 | 109 | 88 | 5,922 |
______________
* For inquiries.
Notes:
1. Weight of galvanized fittings should not exceed the weight non more than 5%.
2. Connection nut with specified in the table in brackets is not recommended.
Examples of symbols
The nut connecting without coating with 40 mm:
Connection nut 40 GOST 8959−75
The same zinc-coating:
Connection nut C-40 GOST 8959−75
(Changed edition, Rev. No. 1 Amendment).
2. The constructive dimensions and technical requirements — GOST 8944−75.
3. The wall thickness shall not be less than 
The electronic text of the document
prepared by JSC «Code» and checked by:
the official publication of the
Pipes of metal and connecting
parts to them. Part 4. Pipe black
metals and alloys, cast
fittings to them.
The basic dimensions. Methods technological
test pipes: Sat. Standards. -
M.: STANDARTINFORM, 2010
