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ISO 5211 Mounted Flange Dimensions

ISO 5211 Mounted Flange Dimensions detail the standardized sizes and specifications for mounting flanges used in valve and actuator assemblies. This standard ensures compatibility and interchangeability, facilitating efficient and accurate connections between different manufacturers’ components. Ideal for ensuring uniformity and precision in industrial valve applications.

ISO 5211 & MSS SP-101 Standard Mounted Flange Dimensions

iso 5211 mounted flange dimensions
StandardFlange Coded1 min
Flange
Diameter
[mm]
d2
[mm]
    d3
Pitch Circle
   [mm]
d4
Bolt Thread
h1 max.
  [mm]
h2 min.
[mm]
h3 min.
[mm]
Number
of Screws
Studs,or
Bolts n
Maximum
Allowed
Torque [Nm]
 ISO 5211 F03Φ46Φ25 Φ36 M53854 32 
 ISO 5211 F04Φ54Φ30 Φ42 M53854 63 
 ISO 5211 F05Φ65Φ35 Φ50 M63964 125 
 MSS SP-101 FA05Φ65Φ35 Φ50.8 1/4-20 UNC3964 129 
 ISO 5211 F07Φ90Φ55 Φ70 M831284 250 
 MSS SP-101 FA07Φ89.9Φ55 Φ69.9 5/16-18 UNC31284 292 
 MSS SP-101 FA08Φ89.9Φ55 Φ80 5/16-18 UNC31284 332 
 F08*Φ89.9Φ55 Φ80 M831284 332 
 ISO 5211 F10Φ125Φ70 Φ102 M10315104 500 
 MSS SP-101 FA10Φ125Φ70 Φ101.6 3/8-16 UNC315104 630 
 MSS SP-101 FA11Φ127Φ70 Φ107.7 3/8-16315104 664 
 ISO 5211 F12Φ150Φ85 Φ125 M12318124 1,000 
 MSS SP-101 FA12Φ150.1Φ85 Φ125.7 1/2-13 UNC318124 1,424 
 ISO 5211 F14Φ175Φ100 Φ140 M16424164 2,000 
 MSS SP-101 FA14Φ175Φ100 Φ139.7 5/8-11 UNC424164 2,508 
 ISO 5211 F16Φ210Φ130 Ø165 M20530204 4,000 
 MSS SP-101 FA16Φ209.6Φ130 Φ165.1 3/4-10 UNC530204 4,406 
 MSS SP-101 FA19Φ222.3Φ155 Φ190.5 5/8-11 UNC527188 6,881 
 F19*Φ222Φ155 Φ190 M16527188 6,881 
 F20**Φ255Φ160 Φ205 M16524168 7,100 
 FA20**Φ255Φ160 Φ205 5/8-11 UNC524168 7,100 
 ISO 5211 F25Φ300Φ200 Φ254 M16524168 8,000 
 MSS SP-101 FA25Φ289.1Φ200 Φ254 5/8-11 UNC524168 9,186 
 ISO 5211 F30Φ350Φ230 Φ298 M20530208 16,000 
 MSS SP-101 FA30Φ342.9Φ230 Φ298.5 314-10 UNC530208 15,965 
 ISO 5211 F35Φ415Φ260 Φ356 M30545308 32,000 
 MSS SP-101 FA35Φ406.4Φ260 Φ355.6 1-8 UNC545308 34,438 
 MSS SP-101 FA36Φ406.4Φ260 Φ355.6 1 Y4-7548328 55,182 
 F36*Φ406.4Φ260 Φ355.6 M32548328 55,182 
 ISO 5211 F40Φ475Φ300 Φ406 M36854368 63,000 
 MSS SP-101 FA40Φ475Φ300 Φ406.4 114-7 UNC854368 63,046 
 ISO 5211 F48Φ560Φ370 Φ483 M368543612 125,000 
 MSS SP-101 FA48Φ558.8Φ370 Φ482.6 114-7 UNC8543612 112,262 
 ISO 5211 F60Φ686Φ470 Φ603 M368543620 250,000 
 MSS SP-101 FA60Φ673.1Φ470 Φ603.3 1 V4-7 UNC8543620 233,879 
 ISO 5211 F80Φ900Φ670 Φ813 M4210634220 500,000 
 ISO 5211 F100Φ1200Φ870 Φ1042 M4210634232 1,000,000 

* Not part of ISO 5211:2017. F08, F19, and F36 are sometimes used by manufacturers to fill the gap between other ISO sizes and to allow mounting MSS SP-101 through bolted gearboxes and actuators onto valves (or vice versa) used in metric markets. They are mirror versions of MSS SP-101 FA08, FA19, and FA36 with metricated bolt holes. F19 is being considered by the ISO committee for addition in the next revision of ISO 5211.
* Not part of ISO 5211 or MSS SP-101:2014. F20/FA20 is sometimes used by manufacturers to fill the gap between F19/FA19 and F25/FA25.
* Bolt Hole d5 as per ISO 273 Medium or ASME B18.2.8 Normal.

Disclaimer: THINKTANK provides the information on this page for general information purposes only. We endeavor to keep the information accurate and updated, but we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, or suitability of the information for any purpose. Please kindly note that if you use this information strictly at your own risk.

ISO 5211 F40 – F100 Flange Interface | Separation Comparison (Threaded Hole)

iso 5211 f40 f100

MSS SP-101 FA05 – FA60 Flange Interface | Separation Comparison (Threaded Hole)

iso 5211 fa05 fa60

ISO 5211 Flange Drive by Key

iso 5211 drive by key
Flange
Standard
h4 max.
[mm]
L5 min
[mm
d7 [mm]
Max.Transmissible Torque [Nm
F053.030  Φ12Φ14Φ18Φ22  
3263125250  
F073.035  Φ14Φ18Φ22Φ28  
63125250500  
F103.045  Ø18Φ22Φ28Φ36Φ42 
  12525050010001500 
F123.055  Φ22Φ28Φ36Φ42Φ48Φ50
  2505001000150020003000
F145.065  Ø28Φ36Φ42Φ48Φ50Φ60
  50010001500200030004000
F165.080  Φ42Φ48Φ50Φ60Φ72Φ80
  1500200030004000800012000
F255.0110  Ø48Φ50Φ60Φ72Φ80Φ98
  20003000400080001200016000
F305.0130  Φ60Φ72Φ80Φ98Φ100Φ120
  400080001200016000 
F355.0180  Φ160Maximum transmissible torque by calculation
F408.0200  Φ180
F488.0250  Φ220
F6008310  Φ280
F8010455  Φ350
F10010655  Φ440

ISO 5211 Flange Driven by Parallel or Diagonal Square Heads

iso 5211drive by parallel or diagonal square head
Flange
Code
h4 max.
[mm]
L5 min
[mm
d7 [mm]
Max.Transmissible Torque [Nm
F053.030  Φ12Φ14Φ18Φ22  
3263125250  
F073.035  Φ14Φ18Φ22Φ28  
63125250500  
F103.045  Ø18Φ22Φ28Φ36Φ42 
  12525050010001500 
F123.055  Φ22Φ28Φ36Φ42Φ48Φ50
  2505001000150020003000
F145.065  Ø28Φ36Φ42Φ48Φ50Φ60
  50010001500200030004000
F165.080  Φ42Φ48Φ50Φ60Φ72Φ80
  1500200030004000800012000
F255.0110  Ø48Φ50Φ60Φ72Φ80Φ98
  20003000400080001200016000
F305.0130  Φ60Φ72Φ80Φ98Φ100Φ120
  400080001200016000 
F355.0180  Φ160Maximum transmissible torque by calculation
F408.0200  Φ180
F488.0250  Φ220
F6008310  Φ280
F8010455  Φ350
F10010655  Φ440

ISO 5211 Flange Driven by Parallel or Diagonal Square Heads

iso 5211drive by parallel or diagonal square head
Flange
Code
h4 max
[mm]
s [mm]
F031.59          
F041.5911         
F053.091114        
F073.0 111417       
F103.0  14171922     
F123.0   17192227    
F145.0     222736   
F165.0      273646  
F255.0       364655
F305.0        465575
d8 min.Φ12.1Φ14.1Φ18.1Φ22.2Φ25.2Φ28.2Φ36.2Φ48.2Φ60.2Φ72.2Φ98.2
d9 max.Φ9.5Φ11.6Φ14.7Φ17.9Φ20Φ23.1Φ28.4Φ38Φ48.5Φ57.9Φ79.1
L5 min.1012161921242938485777
Max. Transmissible
Torque  [Nm]
32631252503505001.00020004000800016000

ISO 5211 Flange Driven by Parallel or Diagonal Square Heads

iso 5211 drive by flat head
Flange
Code
h4 max
[mm]
s [mm]
F031.59(8)          
F041.5911  (9.5)         
F053.091114  (12)        
F073.0 111417(15)       
F103.0  141719(19)22     
F123.0   17192227 (24)    
F145.0     222736 (32)   
F165.0      273646 (40)  
F255.0       364655(48) 
F305.0        465575(66)
d8 minΦ12.1Φ14.1Φ18.122.225.228.236.248.260.272.298.2
d9 max.Φ10Φ12.2Φ15.5Φ18.7Φ20.9Φ24.2Φ29.6Φ39.3Φ50.2Φ59.9Φ81.6
L5 min10  (12)12(15)16(18)Φ19  (22)Φ21Φ24(28)Φ29 (36)Φ38 (40)Φ48 (44)Φ57 (52)Φ77 (70)
Max.Transmissible
Torque for Flat Head
[Nm]
3263125250350500100020004000800016000
Max.Transmissible
Torque for Bi-square
[Nm]
20408017522535070014002800560011200

ISO 5211 Flange Driven by Involute Spline

iso 5211 drive by involute spline
Flange Codeh4 max.
[mm]
  d11
[mm
d10 min
[mm]
Modul m
ISO 4156-1
L5 min.[mm]Max
Transmissible
Torque [Nm]
F031.5Φ16.1Φ14.51.51232
F041.5Φ19.1Φ172.01563
F053.0Φ24.1Φ21.52.518125
F073.0Φ28.1Φ253.022250
F103.0Φ36.1Φ324.028500
F123.0Φ47.1Φ425.0361000
F145.0Φ60.1Φ546.0402000
F165.0Φ74.1Φ677.0444000
F255.0Φ88.1Φ808.0528000
F305.0Φ116.1Φ106107016000

ISO 5211 – Position of Actuator Parts at Interface
Closing Direction is Clockwise & Valve Shown in Closed Position

a. Actuated Drive by Key, 90° Key and 180° Key

iso 5211 drive by key, 90° keys, and 180° keys

b. Actuated Drive by Parallel or Diagonal Square Heads

iso 5211 drive by parallel or diagonal square head or bi square

c. Actuated Drive by Flat Head

iso 5211drive by flat head

MSS SP-101 EXTRACT - Drive Type

a. Keyed Output Assembly

mss mounted flange keyed output assembly
Flange
Type/Code
D7 max
in.[mm]
L1 min.
[mm]
Key Section
Width x Thickness in.
FA050.87
(22.1)
1.30
(33.0)
3/16 x 3/16
FA071.10
(27.9)
1.50
(38.1)
1/4 x 1/4
FA081.10
(27.9)
1.50
(38.1)
1/4 x 1/4
FA101.65
(41.9)
1.77
(45.0)
3/8 x 3/8
FA111.65
(41.9)
1.77
(45.0)
3/8 x 3/8
FA121.97
(50.0)
2.17
(55.1)
1/2 x 1/2
FA142.36
(59.9)
2.90
(73.7)
5/8 x 5/8
FA163.15
(80.0)
3.15
(80.0)
3/4 x 3/4
FA193.50
(88.9)
3.00
(76.2)
7/8 x 7/8
FA253.94
(100.1)
4.33
(110.0)
1 x 1
FA304.72
(119.9)
5.12
(130.0)
1-1/4 x 1- 1/2
FA356.30
(160.0)

7.09

(180.1)

1-1/2 x 1-1/2
FA366.30
(160.0)
7.09
(180.1)
1-1/2 x 1-1/2
FA407.09
(180.1)
8.30
(210.8)
1-3/4 x 1-1/2
FA488.66
(220.0)
11.00
(279.4)
2 x 1-1/2
FA6012.00
(305)
11.00
(279.4)
3 x2

b. Flated Output Shaft Assembly

mss mounted flange flatted output shaft assembly
Flange
Type/Code
D8
in.[mm]
B2
in.[mm]
L4
in.[mm]
L5
in.[mm]
FA050.75
(19.1)
0.50
(12.7)
0.75
(19.1
0.50
(12.7)
FA080.88
(22.4)
0.62
(15.7)
1.03
(26.2)
0.75
(19.1)
FA111.12
(28.5)
0.88
(22.4)
1.03
(26.2)
0.88
(22.4)
FA121.50
(38.1)
1.12
(28.5)
1.75
(38.1)
1.50
(28.5)
FA142.00
(50.8)
1.50
(38.1)
1.75
(44.4)
1.50
(38.1)
FA162.62
(66.5)
1.75
(44.4)
2.00
(50.8)
1.75
(44.4)

c. Square Output Shaft Assembly

mss mounted flange square output shaft assembly
Flange
Type/size
D8
in.[mm]
B3
in.[mm]
L4
in.[mm]
L5
in.[mm]
FA050.75
(19.1)
0.56
(14.2)
0.75
(19.1
0.50
(12.7)
FA080.88
(22.4)
0.75
(19.1)
1.03
(26.2)
0.75
(19.1)
FA111.12
(28.5)
0.88
(22.4)
1.03
(26.2)
0.88
(22.4)
FA121.50
(38.1)
1.12
(28.5)
1.50
(38.1)
1.12
(28.5)
FA142.00
(50.8)
1.62
(41.1)
1.75
(44.4)
1.50
(38.1)
FA162.62
(66.5)
2.00
(50.8)
2.00
(50.8)
1.75
(44.4)

c. MSS SP-101 Shaft Orientations
Closing Direction is Clockwise & Valve Shown in Closed Position

mss sp 101 shaft orientations

Appendix A – Clearance Holes for Bolts and Screws

appendix a – clearance holes for bolts and screws

a. ISO 273* - Clearance Holes for Bolts and Screws

Thread Diameter
d
[mm]
Clearance Hole dn [inch]
FineMediumCoarse
55.35.55.8
66.46.67
88.4910
1010.51112
121313.514.5
161717.518.5
20212224
30313335
36373942
42434548

b. ASME B18.2.8** - Clearance Holes for Bolts, Screws and Studs

Nominal Screw
Size
d
[inch]
Clearance Hole dn [inch]
CloseNormalLoose
1/417/649/3219/64
5/1621/6411/3223/64
3/825/6413/3227/64
1/217/329/1639/64
5/821/3211/1647/64
3/425/3213/1629/32
1-1/419/32111/3217/15

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