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Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
D9
4300 Catalog
Ferulok
®
Flareless Bite Type Fittings
Dimensions and pressures for reference only, subject to change.
F5BU
Straight Thread Connector
Flareless / SAE-ORB
SAE 080120
FBU
Male Connector
Flareless / NPTF
SAE 080102
LHBU
Large Hex Union
Flareless / Flareless
SAE 080119
WBU
Bulkhead Union
Flareless / Flareless
SAE 080601
* W – Bulkhead pilot dia.
recommended clearance
hole is +.015 over W dia.
TUBE
FITTING
PART #
END SIZE
C2
HEX
(in.)
L1
(in.)
STANDARD
Dynamic
Pressure
(x 1,000 PSI)
1
(in.)
2
(in.)
-S -SS
4 LHBU
1/4
1/4 11/16 1.19 6.0 6.0
6 LHBU
3/8
3/8 13/16 1.23 6.0 6.0
6-4 LHBU
3/8
1/4 13/16 1.22
6.0
8 LHBU
1/2
1/2
1 1.42 5.0 5.0
8-6 LHBU
1/2
1/2
1 1.33
5.0
10 LHBU
5/8
5/8 1 1/8 1.61 5.0
12 LHBU
3/4
3/4 1 3/8 1.81 4.5 4.5
16 LHBU
1
1
1 5/8 1.81 4.0
TUBE
FITTING
PART #
END SIZE
C2
HEX
(in.)
I1
(in.)
L4
(in.)
W
(in.)
Max.
Bulkhead
Thickness
STANDARD
Dynamic
Pressure
(x 1,000 PSI)
1
(in.)
2
(in.)
-S -SS
4 WBU
1/4 1/4 11/16 1.12 1.89 0.44 0.38 6.0 6.0
6 WBU
3/8 3/8 13/16 1.17 1.98 0.56 0.40 6.0 6.0
8 WBU
1/2 1/2 1 1.31 2.22 0.75 0.40 5.0 5.0
10 WBU
5/8 5/8 1 1/8 1.45 2.48 0.88 0.37 5.0
12 WBU
3/4 3/4 1 3/8 1.56 2.72 1.06 0.43 4.5 4.5
16 WBU
1 1 1 5/8 1.56 2.72 1.31 0.43 4.0
TUBE
FITTING
PART #
END SIZE
C4
HEX
(in.)
L5
(in.)
STANDARD
Dynamic
Pressure
(x 1,000 PSI)
1
(in.)
2
UN/UNF-2A
-S -SS
2 F5BU
1/8
5/16-24
7/16 1.00 5.0
3 F5BU
3/16
3/8-24
1/2 1.05 5.0 5.0
4 F5BU
1/4
7/16-20
9/16 1.13 5.0 5.0
4-5 F5BU
1/4
1/2-20
5/8 1.13 5.0 5.0
4-6 F5BU
1/4
9/16-18
11/16 1.20 5.0 5.0
4-10 F5BU
1/4
7/8-14
1
1.40
5.0
5 F5BU
5/16
1/2-20
5/8 1.13 5.0
6 F5BU
3/8
9/16-18
11/16 1.22 5.0 5.0
6-4 F5BU
3/8
7/16-20
5/8 1.19
6-8 F5BU
3/8
3/4-16
7/8 1.28 5.0 5.0
8 F5BU
1/2
3/4-16
7/8 1.38 5.0 5.0
8-6 F5BU
1/2
9/16-18
13/16 1.28 5.0
8-10 F5BU
1/2
7/8-14
1
1.50 5.0 5.0
8-12 F5BU
1/2 1 1/16-12 1 1/4 1.67 4.5 4.5
10 F5BU
5/8
7/8-14
1
1.56 5.0 5.0
10-12 F5BU
5/8 1 1/16-12 1 1/4 1.73
12 F5BU
3/4 1 1/16-12 1 1/4 1.78 4.5 4.5
12-8 F5BU
3/4
3/4-16
1 1/8 1.75 4.5 4.5
12-16 F5BU
3/4 1 5/16-12 1 1/2 1.81 4.0
16 F5BU
1
1 5/16-12 1 1/2 1.81 4.0 4.0
16-12 F5BU
1
1 1/16-12 1 3/8 1.81 4.0
16-20 F5BU
1
1 5/8-12
1 7/8 1.91 3.0
20 F5BU
1 1/4 1 5/8-12
1 7/8 1.91 3.0 3.0
24 F5BU
1 1/2 1 7/8-12
2 1/8 1.97 3.0 3.0
32 F5BU
2
2 1/2-12
2 3/4 2.13 2.0
TUBE
FITTING
PART #
END SIZE
C
HEX
(in.)
L
(in.)
STANDARD
Dynamic
Pressure
(x 1,000 PSI)
1
(in.)
2
NPTF
-S -SS
2 FBU
1/8
1/8-27
7/16 1.04 5.0 5.0
2-4 FBU
1/8
1/4-18
9/16 1.24 5.0 5.0
3 FBU
3/16
1/8-27
7/16 1.09 5.0 5.0
4 FBU
1/4
1/8-27
1/2 1.12 5.0 5.0
4-4 FBU
1/4
1/4-18
9/16 1.32 5.0 5.0
4-6 FBU
1/4
3/8-18
3/4 1.33 5.0 5.0
4-8 FBU
1/4
1/2-14
7/8 1.58 5.0 5.0
5 FBU
5/16
1/8-27
9/16 1.12 5.0 5.0
5-4 FBU
5/16
1/4-18
9/16 1.32 5.0 5.0
6 FBU
3/8
1/4-18
5/8 1.34 5.0 5.0
6-2 FBU
3/8
1/8-27
5/8 1.15 5.0 5.0
6-6 FBU
3/8
3/8-18
3/4 1.35 5.0 5.0
6-8 FBU
3/8
1/2-14
15/16 1.60 5.0 5.0
8 FBU
1/2
3/8-18
13/16 1.44 5.0 5.0
8-4 FBU
1/2
1/4-18
13/16 1.44 5.0 5.0
8-8 FBU
1/2
1/2-14
7/8 1.69 5.0 5.0
8-12 FBU
1/2
3/4-14
1 1/8 1.76 4.0 4.0
10 FBU
5/8
1/2-14
15/16 1.75 4.5 4.5
10-6 FBU
5/8
3/8-18
15/16 1.56 4.5 4.5
10-12 FBU
5/8
3/4-14
1 1/8 1.82 4.0
12 FBU
3/4
3/4-14
1 1/8 1.88 4.0 4.0
12-8 FBU
3/4
1/2-14
1 1/8 1.88 4.0 4.0
14 FBU
7/8
3/4-14
1 1/4 1.88 3.0
16 FBU
1
1-11 1/2 1 3/8 2.07 3.0 3.0
16-12 FBU
1
3/4-14
1 3/8 1.88 3.0 3.0
20 FBU
1 1/4 1 1/4-11 1/2 1 11/16 2.18 2.5 2.5
24 FBU
1 1/2 1 1/2-11 1/2 2
2.28 2.5 2.5
32 FBU
2
2-11 1/2 2 3/4 2.46 2.0 2.0