Model: MIL-F-18866

Tube To Boss Elbow

Special Features:

Supports 1025-01-126-6648; howitzer, med. Towed 155-mm, m198

Properties:

Thread Class
2a all ends
Maximum Operating Temp
121.0 degrees celsius single response
End Application
23n ship, ohio class ssn (trident)
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Flareless (tube) 1st end
Leg Length
0.703 inches 2nd end
Leg Length
0.891 inches 1st end
Connection Type
Threaded external boss 2nd end
Connection Type
Threaded external tube 1st 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
Flow Angle
90.0 degrees
Outside Diameter Tube Accommodated
0.250 inches 1st end
Material
Steel comp 304 or steel comp 316 or steel comp 303
Material Specification
Qq-s-763 federal specification single material response or qq-s-763 federal specification single material response or qq-s-764 federal specification single material response
Media For Which Designed
Air 2nd response
Media For Which Designed
Hydraulic fluid 1st response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35, type 2 federal specification single treatment response
Thread Series Designator
Unf all ends
Furnished Items And Quantity
1 tube coupling nut w/sleeve and 1 preformed packing
Specification Data
96906-ms51839 government standard and 81343-j514 professional/industrial association standard
Nondefinitive Specification/std Data
27a figure
NSN
4730-00-727-9795
Part Number
MIL-F-18866
Description
Elbow,tube To Boss
CAGE
81349

A fitting that forms an angle of less that 180 degrees (3.141 radians) from a straight flow. One connecting end 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 other end 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 or heel inlet(s). It is designed to connect a tube or tube fitting to a boss or boss fitting on items such as tanks, housings, valve fittings, or the like.

Part MIL-F-18866 NSN 4730-00-727-9795

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22679
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:
4.0 X 0.0 X 0.0
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: 7307929000
  • SITC: 67959
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Threaded elbows and bends of iron or steel (other than cast iron or stainless steel) for pipes and tubes

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