Model: AN921-28D

Tube Elbow

Properties:

Thread Class
3a 1st end bulkhead
Thread Class
3a all ends
Connection Style
Flared (tube) all ends
Leg Length
2.594 inches 2nd end
Leg Length
3.781 inches 1st end
Connection Type
Threaded external tube all ends
Thready Qty Per Inch (tpi)
12 1st end bulkhead
Thready Qty Per Inch (tpi)
12 all ends
Thread Size
2.250 inches 1st end bulkhead
Thread Size
2.250 inches all ends
Seat Angle
37.0 degrees all ends
Flow Angle
90.0 degrees
Outside Diameter Tube Accommodated
1.750 inches all ends
Material
Aluminum alloy
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625 military specification single treatment response
Thread Series Designator
Unj 1st end bulkhead
Thread Series Designator
Unj all ends
Specification Data
96906-ms24394 government standard
NSN
4730-00-270-7676
Part Number
AN921-28D
Description
Elbow,tube
CAGE
88044

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 AN921-28D NSN 4730-00-270-7676

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:
A
ESD:
ESD:
MMAC:
SX
CRITL:
X

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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