Model: MIL-F-5509

Tube To Boss Tee

Properties:

Thread Class
3a 2nd end
Thread Class
3a 1st end
Thread Class
3a 1st end bulkhead
Thread Class
3b 3rd end
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Flareless (tube) 1st end
Connection Style
Gasket seal (boss) 3rd end
Leg Length
1.094 inches 2nd end
Leg Length
1.672 inches 1st end
Leg Length
0.750 inches 3rd end
Connection Type
Threaded external boss 2nd end
Connection Type
Threaded external tube 1st end
Connection Type
Threaded internal boss 3rd end
Thread Size
0.438 inches 1st end bulkhead
Thread Size
0.438 inches all ends
Seat Angle
12.0 degrees 1st end
Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
Steel
Material Specification
Qq-s-637 federal specification single material response
Surface Treatment
Cadmium
Thread Series Designator
Unjf all ends
Thread Series Designator
Unjf 1st end bulkhead
Specification Data
96906-ms21910 government standard
NSN
4730-00-278-2769
Part Number
MIL-F-5509
Description
Tee,tube To Boss
CAGE
81349

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 MIL-F-5509 NSN 4730-00-278-2769

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:
U
ESD:
ESD:
MMAC:
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:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7307992000
  • SITC: 67959
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Other fittings nesoi of iron or nonalloy steel

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