SAE Flanges
Dimensions / Order Codes
SAE Single-Part Screw-in NPT Threaded Flange
BFX-N
Order Codes Examples
Single-Part Flange
SAE Single-Part Screw-in BFX-...-N
NPT Threaded Flange (without O-ring)
Flange Kits
Including UNC bolts (Gr10), BFX-...-N-U#K
spring rings, O-ring made of NBR (Buna-N®)
(packed in kits)
Including UNC bolts (Gr10), BFX-...-N-V-U#K
spring rings, O-ring made of FPM (Viton®)
(packed in kits)
Including Metric bolts 8.8,
BFX-...-N #K
spring rings, O-ring made of NBR (Buna-N®)
(packed in kits)
**
**
**
**
Material
S355J0 or equivalent
Surface
blank, oiled
Special Material Stainless Steel 1.4404 “-W5” on request
3000 PSI Standard Pressure Series (according to ISO 6162-1)
PN (bar/PSI)1
8.8
Bolts
350
5075
350
5075
350
5075
350
5075
250
3625
250
3625
200
2900
200
2900
200
2900
200
2900
160
2320
160
2320
100
1450
100
1450
100
1450
100
1450
35
505
35
505
35
505
Nominal Size
10.9 (Gr10)
Bolts
350
5075
350
5075
350
5075
350
5075
315
4565
315
4565
250
3625
250
3625
200
2900
200
2900
200
2900
200
2900
160
2320
160
2320
160
2320
160
2320
35
505
35
505
35
505
Order Codes
DN
(in)
13
1/2
BFX-301-N
13
1/2
BFX-301-N038
19
3/4
BFX-302-N
19
3/4
BFX-302-N012
25
1
BFX-303-N
25
1
BFX-303-N034
32
1-1/4
BFX-304-N
32
1-1/4
BFX-304-N100
38
1-1/2
BFX-305-N
38
1-1/2
BFX-305-N114
51
2
BFX-306-N
51
2
BFX-306-N112
64
2-1/2
BFX-307-N
64
2-1/2
BFX-307-N200
76
3
BFX-308-N
76
3
BFX-308-N212
89
3-1/2
BFX-309-N
102
4
BFX-310-N
127
5
BFX-311-N
Dimensions (mm/in)
ØA
13
.51
13
.51
19
.75
13
.51
25
.98
19
.75
31
1.22
25
.98
38
1.50
31
1.22
50
1.97
38
1.50
63
2.48
50
1.97
73
2.87
63
2.48
89
3.50
99
3.90
120
4.72
D
16
.63
16
.63
18
.71
18
.71
18
0.71
18
.71
21
.83
21
.83
25
.98
25
.98
25,5
1.00
25,5
1.00
26
1.02
26
1.02
27,5
1.08
27,5
1.08
27,5
1.08
27,5
1.08
28
1.10
F
47
1.85
47
1.85
50
1.97
50
1.97
54
2.13
54
2.13
68
2.68
68
2.68
79
3.11
79
3.11
88
3.46
88
3.46
101
3.98
101
3.98
127
5.00
127
5.00
138
5.43
147
5.79
180
7.09
for Bolts
G
57
2.24
57
2.24
67
2.64
67
2.64
72
2.83
72
2.83
82
3.23
82
3.23
96
3.78
96
3.78
102
4.02
102
4.02
115
4.53
115
4.53
137
5.39
137
5.39
155
6.10
163
6.42
184
7.24
H
17,5
.69
17,5
.69
22,3
.88
22,3
.88
26,2
1.03
26,2
1.03
30,2
1.19
30,2
1.19
35,7
1.41
35,7
1.41
42,9
1.69
42,9
1.69
50,8
2.00
50,8
2.00
61,9
2.44
61,9
2.44
69,8
2.75
77,8
3.06
92
3.62
I
38,1
1.50
38,1
1.50
47,6
1.87
47,6
1.87
52,4
2.06
52,4
2.06
58,7
2.31
58,7
2.31
69,9
2.75
69,9
2.75
77,8
3.06
77,8
3.06
88,9
3.50
88,9
3.50
106,4
4.19
106,4
4.19
120,7
4.75
130,2
5.13
152,4
6.00
L
36
1.42
36
1.42
36
1.42
36
1.42
38
1.50
38
1.50
41
1.61
41
1.61
44
1.73
44
1.73
45
1.77
45
1.77
50
1.97
50
1.97
50
1.97
50
1.97
50
1.97
50
1.97
50
1.97
T
M
(NPT) Ø K3
15
8,7
1/2
.59
.34
20
8,7
3/8
.79
.34
18
10,5
3/4
.71
.41
15
10,5
1/2
.59
.41
20
10,5
1
.79
.41
18
10,5
3/4
.71
.41
22
11,7 (13,5)
1-1/4
.87
.46 (.53)
20
11,7 (13,5)
1
.79
.46 (.53)
24
13,5 (14,5)
1-1/2
.94
.53 (.57)
22
13,5 (14,5)
1-1/4
.87
.53 (.57)
26
13,5 (14,5)
2
1.02
.53 (.57)
24
13,5 (14,5)
1-1/2
.94
.53 (.57)
30
13,5 (14,5)
2-1/2
1.18
.53 (.57)
26
13,5 (14,5)
2
1.02
.53 (.57)
30
17
3
1,.18
.67
30
17
2-1/2
1.18
.67
30
17
3-1/2
1.18
.67
30
17
4
1.18
.67
30
17
5
1.18
.67
UNC
Metr.3
5/16–18 UNC x 1-1/4
M8x30
5 /16–18 UNC x 1-1/4 M8x30
3/8–16 UNC x 1-1/2
M10x35
3/8–16 UNC x 1-1/2
M10x35
3/8–16 UNC x 1-1/2
M10x35
3/8–16 UNC x 1-1/2
M10x35
7/16–14 UNC x 1-1/2
M10x40 (M12x40)
7/16–14 UNC x 1-1/2
M10x40 (M12x40)
1/2–13 UNC x 1-3/4
M12x45 (M14x45)
1/2–13 UNC x 1-3/4
M12x45 (M14x45)
1/2–13 UNC x 1-3/4
M12x45 (M14x45)
1/2–13 UNC x 1-3/4
M12x45 (M14x45)
1/2–13 UNC x 1-3/4
M12x45 (M14x45)
1/2–13 UNC x 1-3/4
M12x45 (M14x45)
5/8–11 UNC x 2
M16x50
5/8–11 UNC x 2
M16x50
5/8–11 UNC x 2
M16x50
5/8–11 UNC x 2
M16x50
5/8–11 UNC x 2-1/4
M16x55
The maximum working pressure applies only to the flange itself and depends on the Metric bolts (Grade 8.8 / 10.9) and UNC bolts (Gr10) used. The actual maximum working pressure
depends on the thickness and the quality of the tube used.
3
Alternative options shown in brackets are available on request.
1
For flange kit part number, refer to the ordering code at the top of the page.
G14
www.stauff.com
SAE Flanges
Dimensions / Order Codes
SAE Single-Part Screw-in NPT Threaded Flange
BFX-N
Order Codes Examples
Single-Part Flange
SAE Single-Part Screw-in BFX-...-N
NPT Threaded Flange (without O-ring)
Flange Kits
Including UNC bolts (Gr10), BFX-...-N-U#K
spring rings, O-ring made of NBR (Buna-N®)
(packed in kits)
Including UNC bolts (Gr10), BFX-...-N-V-U#K
spring rings, O-ring made of FPM (Viton®)
(packed in kits)
Including Metric bolts 8.8,
BFX-...-N #K
spring rings, O-ring made of NBR (Buna-N®)
(packed in kits)
**
**
**
**
Material
S355J0 or equivalent
Surface
blank, oiled
Special Material Stainless Steel 1.4404 “-W5” on request
6000 PSI High Pressure Series (according to ISO 6162-2)
PN (bar/PSI)1
8.8
Bolts
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
Nominal Size
10.9 (Gr10)
Bolts
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
Order Codes
DN
(in)
13
1/2
BFX-601-N
13
1/2
BFX-601-N038
19
3/4
BFX-602-N
19
3/4
BFX-602-N012
25
1
BFX-603-N
25
1
BFX-603-N034
32
1-1/4
BFX-604-N
32
1-1/4
BFX-604-N-M14
32
1-1/4
BFX-604-N100
32
1-1/4
BFX-604-N100-M14
38
1-1/2
BFX-605-N
38
1-1/2
BFX-605-N114
51
2
BFX-606-N
Dimensions (mm/in)
ØA
14
.55
14
.55
19
.75
14
.55
25
.98
19
.75
31
1.22
31
1.22
25
.98
25
.98
38
1.50
31
1.22
50
1.97
D
16,5
.65
16,5
.65
19,5
.77
19,5
.77
24,5
.96
24,5
.96
27,5
1.08
27,5
1.08
27,5
1.08
27,5
1.08
31
1.22
31
1.22
37
1.46
F
47
1.85
47
1.85
54
2.13
54
2.13
68
2.68
68
2.68
79
3.11
79
3.11
79
3.11
79
3.11
88
3.46
88
3.46
118
4.65
for Bolts
G
57
2.24
57
2.24
72
2.83
72
2.83
82
3.23
82
3.23
95
3.74
95
3.74
95
3.74
95
3.74
108
4.25
108
4.25
137
5.39
H
18,2
.72
18,2
.72
23,8
.94
23,8
.94
27,8
1.09
27,8
1.09
31,6
1.24
31,6
1.24
31,6
1.24
31,6
1.24
36,5
1.44
36,5
1.44
44,5
1.75
I
40,5
1.59
40,5
1.59
50,8
2.00
50,8
2.00
57,2
2.25
57,2
2.25
66,6
2.62
66,6
2.62
66,6
2.62
66,6
2.62
79,3
3.12
79,3
3.12
96,8
3.81
L
36
1.42
36
1.42
36
1.42
36
1.42
44
1.73
44
1.73
44
1.73
44
1.73
44
1.73
44
1.73
51
2.01
51
2.01
65
2.56
M
15
.59
20
.79
18
.71
15
.59
20
.79
18
.71
22
.87
22
.87
20
.79
20
.79
24
.94
22
.87
33
1.30
T
(NPT) Ø K
8,7
1/2
.34
8,7
3/8
.34
10,5
3/4
.41
10,5
1/2
.41
13
1
.51
13
3/4
.51
13,5
1-1/4
.53
15
1-1/4
.59
13,5
1
.53
15
1
.59
17
1-1/2
.67
17
1-1/4
.67
21
2
.83
UNC
Metr.
5/16–18 UNC x 1-1/4
M8x30
5/16–18 UNC x 1-1/4
M8x30
3/8–16 UNC x 1-1/2
M10x35
3/8–16 UNC x 1-1/2
M10x35
7/16–14 UNC x 1-3/4
M12x45
7/16–14 UNC x 1-3/4
M12x45
1/2–13 UNC x 1-3/4
M12x45
M14x45
1/2–13 UNC x 1-3/4
M12x45
M14x45
5/8–11 UNC x 2-1/4
M16x55
5/8–11 UNC x 2-1/4
M16x55
3/4–10 UNC x 2-3/4
M20x70
The maximum working pressure applies only to the flange itself and depends on the Metric bolts (Grade 8.8 / 10.9) and UNC bolts (Gr10) used. The actual maximum working pressure
depends on the thickness and the quality of the tube used.
3
Alternative options shown in brackets are available on request.
1
G Flanges
For flange kit part number, refer to the ordering code at the top of the page.
www.stauff.comG15
SAE Flanges
Dimensions / Order Codes
SAE Single-Part Screw-in NPT Threaded Companion Flange
BAS-N
Order Codes Examples
Single-Part Screw-in BAS-...-NU
**SAE
NPT Threaded Companion Flange for UNC bolts
Single-Part Screw-in BAS-...-N
**SAE
NPT Threaded Companion Flange for Metric bolts
Material
S355J0 or equivalent
Surface
blank, oiled
Special Material Stainless Steel 1.4404 “-W5” on request
3000 PSI Standard Pressure Series (according to ISO 6162-1)
PN (bar/PSI)1
8.8
Bolts
350
5075
350
5075
350
5075
350
5075
250
3625
250
3625
200
2900
200
2900
200
2900
200
2900
160
2320
160
2320
100
1450
100
1450
100
1450
100
1450
35
505
35
505
35
505
Nominal Size
10.9 (Gr10)
Bolts
350
5075
350
5075
350
5075
350
5075
315
4565
315
4565
250
3625
250
3625
200
2900
200
2900
200
2900
200
2900
160
2320
160
2320
160
2320
160
2320
35
505
35
505
35
505
Order Codes
DN
(in)
13
1/2
BAS-301-NU
13
1/2
BAS-301-NU038
19
3/4
BAS-302-NU
19
3/4
BAS-302-NU012
25
1
BAS-303-NU
25
1
BAS-303-NU034
32
1-1/4
BAS-304-NU
32
1-1/4
BAS-304-NU100
38
1-1/2
BAS-305-NU
38
1-1/2
BAS-305-NU114
51
2
BAS-306-NU
51
2
BAS-306-NU112
64
2-1/2
BAS-307-NU
64
2-1/2
BAS-307-NU200
76
3
BAS-308-NU
76
3
BAS-308-NU212
89
3-1/2
BAS-309-NU
102
4
BAS-310-NU
127
5
BAS-311-NU
Dimensions (mm/in)
ØA
13
.51
13
.51
19
.75
13
.51
25
.98
19
.75
31
1.22
25
.98
38
1.50
31
1.22
50
1.97
38
1.50
63
2.48
50
1.97
73
2.87
63
2.48
89
3.50
99
3.90
120
4.72
D
16
.63
16
.63
18
.71
18
.71
18
.71
18
.71
21
.83
21
.83
25
.98
25
.98
25,5
1.00
25,5
1.00
26
1.02
26
1.02
27,5
1.08
27,5
1.08
27,5
1.08
27,5
1.08
28
1.10
F
47
1.85
47
1.85
50
1.97
50
1.97
54
2.13
54
2.13
68
2.68
68
2.68
79
3.11
79
3.11
88
3.46
88
3.46
101
3.98
101
3.98
127
5.00
127
5.00
138
5.43
147
5.79
180
7.09
Ø Thread
G
57
2.24
57
2.24
67
2.64
67
2.64
72
2.83
72
2.83
82
3.23
82
3.23
96
3.78
96
3.78
102
4.02
102
4.02
115
4.53
115
4.53
137
5.39
137
5.39
155
6.10
163
6.42
184
7.24
H
17,5
.69
17,5
.69
22,3
.88
22,3
.88
26,2
1.03
26,2
1.03
30,2
1.19
30,2
1.19
35,7
1.41
35,7
1.41
42,9
1.69
42,9
1.69
50,8
2.00
50,8
2.00
61,9
2.44
61,9
2.44
69,8
2.75
77,8
3.06
92
3.62
I
38,1
1.50
38,1
1.50
47,6
1.87
47,6
1.87
52,4
2.06
52,4
2.06
58,7
2.31
58,7
2.31
69,9
2.75
69,9
2.75
77,8
3.06
77,8
3.06
88,9
3.50
88,9
3.50
106,4
4.19
106,4
4.19
120,7
4.75
130,2
5.13
152,4
6.00
L
36
1.42
36
1.42
36
1.42
36
1.42
38
1.50
38
1.50
41
1.61
41
1.61
44
1.73
44
1.73
45
1.77
45
1.77
50
1.97
50
1.97
50
1.97
50
1.97
50
1.97
50
1.97
50
1.97
M
15
.59
20
.79
18
.71
15
.59
20
.79
18
.71
22
.87
20
.79
24
.94
22
.87
26
1.02
24
.94
30
1.18
26
1.02
30
1.18
30
1.18
30
1.18
30
1.18
30
1.18
T (NPT)
UNC
Metr.3
1/2
5/16–18 UNC
M8
3/8
5/16–18 UNC
M8
3/4
3/8–16 UNC
M10
1/2
3/8–16 UNC
M10
1
3/8–16 UNC
M10
3/4
3/8–16 UNC
M10
1-1/4
7/16–14 UNC
M10 (M12)
1
7/16–14 UNC
M10 (M12)
1-1/2
1/2–13 UNC
M12 (M14)
1-1/4
1/2–13 UNC
M12 (M14)
2
1/2–13 UNC
M12 (M14)
1-1/2
1/2–13 UNC
M12 (M14)
2-1/2
1/2–13 UNC
M12 (M14)
2
1/2–13 UNC
M12 (M14)
3
5/8–11 UNC
M16
2-1/2
5/8–11 UNC
M16
3-1/2
5/8–11 UNC
M16
4
5/8–11 UNC
M16
5
5/8–11 UNC
M16
The maximum working pressure applies only to the flange itself and depends on the Metric bolts (Grade 8.8 / 10.9) and UNC bolts (Gr10) used. The actual maximum working pressure
depends on the thickness and the quality of the tube used.
3
Alternative options shown in brackets are available on request.
1
G16
www.stauff.com
SAE Flanges
Dimensions / Order Codes
SAE Single-Part Screw-in NPT Threaded Companion Flange
BAS-N
Order Codes Examples
Single-Part Screw-in BAS-...-NU
**SAE
NPT Threaded Companion Flange for UNC bolts
Single-Part Screw-in BAS-...-N
**SAE
NPT Threaded Companion Flange for Metric bolts
Material
S355J0 or equivalent
Surface
blank, oiled
Special Material Stainless Steel 1.4404 “-W5” on request
6000 PSI High Pressure Series (according to ISO 6162-2)
PN (bar/PSI)1
8.8
Bolts
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
350
5075
Nominal Size
10.9 (Gr10)
Bolts
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
400
5800
Order Codes
DN
(in)
13
1/2
BAS-601-NU
13
1/2
BAS-601-NU038
19
3/4
BAS-602-NU
19
3/4
BAS-602-NU012
25
1
BAS-603-NU
25
1
BAS-603-NU034
32
1-1/4
BAS-604-NU
32
1-1/4
BAS-604-NM14
32
1-1/4
BAS-604-NU100
32
1-1/4
BAS-604-NM14-100
38
1-1/2
BAS-605-NU
38
1-1/2
BAS-605-NU114
51
2
BAS-606-NU
Dimensions (mm/in)
ØA
14
.55
14
.55
19
.75
14
.55
25
.98
19
.75
31
1.22
31
1.22
25
.98
25
.98
38
1.50
31
1.22
50
1.97
D
16,5
.65
16,5
.65
19,5
.77
19,5
.77
24,5
.96
24,5
.96
27,5
1.08
27,5
1.08
27,5
1.08
27,5
1.08
31
1.22
31
1.22
37
1.46
F
47
1.85
47
1.85
54
2.13
54
2.13
68
2.68
68
2.68
79
3.11
79
3.11
79
3.11
79
3.11
88
3.46
88
3.46
118
4.65
Ø Thread
G
57
2.24
57
2.24
72
2.83
72
2.83
82
3.23
82
3.23
95
3.74
95
3.74
95
3.74
95
3.74
108
4.25
108
4.25
137
5.39
H
18,2
.72
18,2
.72
23,8
.94
23,8
.94
27,8
1.09
27,8
1.09
31,6
1.24
31,6
1.24
31,6
1.24
31,6
1.24
36,5
1.44
36,5
1.44
44,5
1.75
I
40,5
1.59
40,5
1.59
50,8
2.00
50,8
2.00
57,2
2.25
57,2
2.25
66,6
2.62
66,6
2.62
66,6
2.62
66,6
2.62
79,3
3.12
79,3
3.12
96,8
3.81
L
36
1.42
36
1.42
36
1.42
36
1.42
44
1.73
44
1.73
44
1.73
44
1.73
44
1.73
44
1.73
51
2.01
51
2.01
58
2.28
M
15
.59
20
.79
18
.71
15
.59
20
.79
18
.71
22
.87
22
.87
20
.79
20
.79
24
.94
22
.87
33
1.30
T (NPT)
UNC
Metr.
1/2
5/16–18 UNC
M8
3/8
5/16–18 UNC
M8
3/4
3/8–16 UNC
M10
1/2
3/8–16 UNC
M10
1
7/16–14 UNC
M12
3/4
7/16–14 UNC
M12
1-1/4
1/2–13 UNC
M12
1-1/4
1
M14
1/2–13 UNC
1
M12
M14
1-1/2
5/8–11 UNC
M16
1-1/4
5/8–11 UNC
M16
2
3/4–10 UNC
M20
The maximum working pressure applies only to the flange itself and depends on the Metric bolts (Grade 8.8 / 10.9) and UNC bolts (Gr10) used. The actual maximum working pressure
depends on the thickness and the quality of the tube used.
3
Alternative options shown in brackets are available on request.
G Flanges
1
www.stauff.comG17