Model: 2158-73

Tube To Boss Straight Adapter

Properties:

Thread Class
2b 1st end
Thread Class
3a 2nd end
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Flared (tube) 1st end
Connection Type
Threaded external boss 2nd end
Connection Type
Threaded internal tube 1st end
Thready Qty Per Inch (tpi)
32 2nd end
Thread Size
0.500 inches 2nd end
Thread Size
0.625 inches 1st end
Seat Angle
45.0 degrees 1st end
Outside Diameter Tube Accommodated
0.625 inches 1st end
Reduced Passage Inside Diameter
0.250 inches 2nd end
Nominallength
0.713 inches
Material
Aluminum alloy
Material Specification
Qq-a-325 federal specification single material response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625 military specification single treatment response
Thread Series Designator
Un 2nd end
Thread Series Designator
Unef 1st end
Fsc Application Data
Valve, regulating p-n 4158&00
NSN
4730-00-056-1344
Part Number
2158-73
Description
Adapter,straight,tube To Boss
CAGE
09445

An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end 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 is designed to join a tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also coupling, tube and nipple, tube.

Part 2158-73 NSN 4730-00-056-1344

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22675
FIIG:
A080B0
Concept No.:
1
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:
013120
UFC:
05380
LTL:
100.0
LCL:
--
WCC:
576
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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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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