Model: 646703

Tube To Boss Tee

Properties:

Connection Style
Double threaded section w/ gasket and locknut sealing (boss) 2nd end
Connection Style
Flared (tube) 1st end
Connection Style
Flared (tube) 3rd end
Leg Length
1.864 inches 2nd end and 1.895 inches 2nd end
Leg Length
0.891 inches 1st end and 0.922 inches 1st end
Leg Length
0.953 inches 3rd end and 0.984 inches 3rd end
Connection Type
Threaded external boss 2nd end
Connection Type
Threaded external tube 1st end
Connection Type
Threaded external tube 3rd end
Thready Qty Per Inch (tpi)
20 1st end
Thready Qty Per Inch (tpi)
20 2nd end
Thready Qty Per Inch (tpi)
20 3rd end
Thread Size
0.438 inches 2nd end
Thread Size
0.438 inches 3rd end
Thread Size
0.438 inches 1st end
Seat Angle
37.0 degrees 1st end
Seat Angle
37.0 degrees 3rd end
Outside Diameter Tube Accommodated
0.250 inches 1st end
Outside Diameter Tube Accommodated
0.250 inches 3rd end
Material
Steel comp 347
Material Specification
66 federal standard single material response
Thread Series Designator
Uns 3rd end
Thread Series Designator
Uns 1st end
Thread Series Designator
Uns 2nd end
NSN
4730-00-131-7734
Part Number
646703
Description
Tee,tube To Boss
CAGE
77445

A fitting having three connections with the branch connection fixed at 90 degrees (1.5705 radians) to the run. The tube connection(s) has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube, or is unthreaded and designed to accommodate a tube. The boss connection(s) has external or internal machine threads (straight threads other than pipe or hose series), and is designed to facilitate a gasket, preformed packing, washer, or the like, to form a seal at the boss. It may have side inlet(s). It is used as a junction at the intersection of a tube or fitting and a boss or boss fitting on items such as a tank, housing, valve fitting, or the like. See also tee, tube; and tee, pipe to tube. Excludes connector, multiple, fluid pressure line.

Part 646703 NSN 4730-00-131-7734

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22683
FIIG:
A080B0
Concept No.:
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
PQ
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
052190
UFC:
30000
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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Schedule B and Export
  • Schedule B: 7307994000
  • SITC: 67959
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Other fittings nesoi of alloy steel not stainless

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