Model: MIL-F-18866

Tube To Boss Tee

Properties:

Thread Class
2a all ends
Maximum Operating Temp
250.0 degrees fahrenheit single response
End Application
Ukm tank, combat, ft, 120mm gun (m1a1)
Connection Style
External seat for gasket seal (boss) 3rd end
Connection Style
Flareless (tube) 1st end
Connection Style
Flareless (tube) 2nd end
Leg Length
1.031 inches 3rd end
Leg Length
0.891 inches 1st end
Leg Length
0.891 inches 2nd end
Connection Type
Threaded external boss 3rd end
Connection Type
Threaded external tube 1st end
Connection Type
Threaded external tube 2nd end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.438 inches all ends
Seat Angle
12.0 degrees 1st end
Seat Angle
12.0 degrees 2nd end
Outside Diameter Tube Accommodated
0.250 inches 1st end
Outside Diameter Tube Accommodated
0.250 inches 2nd end
Material
Stainless steel
Material Specification
Fed-std-66, 300 series federal standard single material response
Media For Which Designed
Air 1st response
Media For Which Designed
Hydraulic fluid 2nd response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35, type1 or 2 federal specification single treatment response
Thread Series Designator
Unf all ends
Furnished Items And Quantity
2 tube coupling nut w/sleeve and 1 preformed packing
Specification Data
96906-ms51841 government standard and 81343-j514 professional/industrial association standard
Nondefinitive Specification/std Data
26d figure
NSN
4730-00-801-6663
Part Number
MIL-F-18866
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-18866 NSN 4730-00-801-6663

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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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: 7307290000
  • SITC: 67956
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Stainless steel tube or pipe fittings nesoi

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