Model: MS21904W12

Tube Elbow

Properties:

Thread Class
3a all ends
End Application
Used on sikorsky model ch-54a and ch-54b cargo transport helicopters
Connection Style
Flareless (tube) all ends
Leg Length
1.562 inches all ends and 1.609 inches all ends
Connection Type
Threaded external tube all ends
Thready Qty Per Inch (tpi)
12 all ends
Thread Size
1.062 inches all ends
Seat Angle
12.0 degrees all ends
Flow Angle
90.0 degrees
Outside Diameter Tube Accommodated
0.750 inches all ends
Material
Aluminum alloy
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625 military specification single treatment response inside
Surface Treatment Specification
Mil-a-8625 military specification single treatment response outside
Thread Series Designator
Unj all ends
Specification Data
81343-as21904 government standard
NSN
4730-00-640-5093
Part Number
MS21904W12
Description
Elbow,tube
CAGE
81343

A fitting that forms an angle of less than 180 degrees (3.141 radians) from a straight flow. Both connecting ends have machine threads (straight threads other than pipe or hose series) designed to accommodate a tube or is unthreaded and designed to accommodate a tube. It may have side or heel inlet(s). See also elbow, pipe and connector, multiple, fluid pressure line.

Part MS21904W12 NSN 4730-00-640-5093

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
03771
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:
M
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051400
UFC:
29700
LTL:
77.5
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7609000000
  • SITC: 68427
  • End Use: Finished metal shapes
  • NAICS: 332919
  • USDA: 1

Freight Class: Aluminum tube or pipe fittings (couplings,elbows sleeves)

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