U4
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
4300 Catalog
General Technical
Dimensions and pressures for reference only, subject to change.
Q1
Code 61 Flange Head w/ O-ring Groove
Q1N
Code 61 Flange Head w/o O-ring Groove
Q2
Code 62 Flange Head w/ O-ring Groove
Q2N
Code 62 Flange Head w/o O-ring Groove
Q1B
Code 61 Flange Block w/ O-ring Groove and
Drilled Mounting Holes
Q1P
Code 61 Flange Block w/o O-ring Groove and
Drilled Mounting Holes
Q2B
Code 62 Flange Block w/ O-ring Groove and
Drilled Mounting Holes
Q2P
Code 62 Flange Pad w/o O-ring Groove and
Tapped Mounting Holes
QSB
Square Flange Block w/ O-ring Groove and
Drilled Mounting Holes
QSP
Square Flange Pad w/o O-ring Groove and
Tapped Mounting Holes
How to Order 4-Bolt Hydraulic Flanges
One- to two-
Size in inches x 16
digit codes
One code is required if end connections are the same size. Two codes are
required if they are different sizes (e.g., 16-12).
B3
Braze Socket – silver braze
CP1
Connector Plate – Code 61
CP2
Connector Plate – Code 62
FCC1
Flange Clamp, Captive – Code 61
FCC2
Flange Clamp, Captive – Code 62
FCCT1
Flange Clamp, Captive with Tapped Holes – Code 61
FCCT2
Flange Clamp, Captive with Tapped Holes – Code 62
FCS1
Flange Clamp, Split – Code 61
FCS2
Flange Clamp, Split – Code 62
G
NPTF Port
G3
BSPT Port
G4
BSPP Port
G5
SAE Port
P
Plug (blanking end)
SP
Spacer w/o Gage Ports
SPG
Spacer w/ 1/4-18 NPTF Gage Port
SPG5
Spacer w/ 7/16-20 UNF Gage Port
SPGG5
Spacer w/ 1/4-18 NPTF & 7/16-20 UNF Ports
WSD1
Weld Sadle – Pipe
WSD2
Weld Saddle – Tube
W4
Flat Weld Socket – Tube
W4S
Flat Weld Socket – Tube (shallow)
W5
Flat Weld Socket – Pipe
W5S
Flat Weld Socket – Pipe (shallow)
W6
Extended Weld Socket – Tube
W6S
Extended Weld Socket – Tube (shallow)
W7
Extended Weld Socket – Pipe
W7S
Extended Weld Socket – Pipe (shallow)
WB1
Weld Butt – Schedule 40
WB3
Weld Butt – Schedule 80
WB5
Weld Butt – Schedule 160
WB7
Weld Butt – Schedule XXS
WBT
Weld Butt – Tank Pilot
WPL
Weld Plate
W
Weld Socket
W2
Weld Nipple
W3 or WB
Weld Nipple – Weld Butt, Tube
None
Block and Pad, Straight*
E
Elbow 90°
H
Barstock, Straight
J
Tee
* The “Block” has O-ring and drilled mounting holes, while the “Pad” has no
O-ring groove and tapped mounting holes.
Omit
Inch Mounting Bolts (screws)
M
Metric Mounting Bolts (screws)
S
Steel, Zinc Plated (braze or weld parts may
not be plated)
SX
Steel, Oil Dipped
SS
Stainless Steel
Omit
Flange Only
K
Kit (O-ring, 4 bolts and washers)
Box 1 – Port / Tube / Pipe Flange Size
Box 2 – Port / Tube / Pipe Connection Description
Box 3 – Shape Description
Box 4 – Flange Connection Type
Box 5 – Mounting Style
Box 6 – Material
Box 7 – Kit Designation
TFD Standard Nomenclature Construction
Box 1
Box 2
Box 3
Box 4
Box 5
Box 6
Box 7
Flange
Size
Connection
Description
Shape
Flange
Connection
Type
Mounting
Style
Material
Kit
Designation
Symbol
Description
Symbol
Description
Symbol
Description
Symbol
Description
Symbol
Description
Symbol
Description
Symbol
Description