Model: AS4318K28

Tube To Boss Straight Adapter

Special Features:

Kc134c28; hexagon wrenching flats drilled or non-drilled for lockwire

Properties:

Thread Class
3a 2nd end
Thread Class
3a 1st 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 external tube 1st end
Thready Qty Per Inch (tpi)
12 1st end
Thready Qty Per Inch (tpi)
12 2nd end
Thread Size
2.250 inches 1st end
Thread Size
2.250 inches 2nd end
Seat Angle
37.0 degrees 1st end
Criticality Code Justification
Feat
Outside Diameter Tube Accommodated
1.750 inches 1st end
Nominallength
3.314 inches
Material
Steel comp 316
Material Specification
Qq-s-763, cond a federal specification single material response
Surface Treatment
Passivate
Thread Series Designator
Un 1st end
Thread Series Designator
Un 2nd end
NSN
4730-01-258-4324
Part Number
AS4318K28
Description
Adapter,straight,tube To Boss
CAGE
81343

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 AS4318K28 NSN 4730-01-258-4324

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:
Y

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Schedule B and Export
  • Schedule B: 7307994000
  • SITC: 67959
  • End Use: Iron and steel products, other
  • NAICS: 332919
  • USDA: 1

Freight Class: Other fittings nesoi of alloy steel not stainless

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