Model: 2670-57 ITEM 20

Self-sealing Coupling Half

Special Features:

For navy nuclear propulsion plant products only

Properties:

Thread Class
2a all ends
Overall Length
2.500 inches
Unable To Decode
Unable to decode and unable to decode
Connection Style
Flared all ends
Connection Type
Threaded external tube first fluid end connection
Thread Size
0.625 inches all ends
Seat Angle
45.0 degrees
Criticality Code Justification
Zzzy
Material
Steel body
Surface Treatment
Zinc body
Style Designator
Male coupling half
Thread Series Designator
Unf all ends
Reference Number Differentiating Characteristics
As differentiated by free from mercury contamination
NSN
4730-01-177-3518
Part Number
2670-57 ITEM 20
Description
Coupling Half,self-sealing
CAGE
43689

A fluid line fitting having a pipe, tube or hose connection or a through hole to accommodate a bolt, fluid passage on one end. The other end must have an external or internal thread for connecting a mating part to form a self-sealing coupling assembly. The fitting has either a self-sealing feature for the purpose of automatically shutting off the flow of fluid when disconnected from its mating half, or, if it has no self-sealing feature, is specifically designed to mate with a fitting with a self-sealing feature. For self-sealing fittings with a quick disconnect end, see coupling half, quick disconnect. For fluid line fittings without a self-sealing feature, see coupling (as modified).

Part 2670-57 ITEM 20 NSN 4730-01-177-3518

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
18281
FIIG:
A531W0
Concept No.:
App. Key:
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:
CRITL:
Y

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
052185
UFC:
29950
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7307199030
  • SITC: 67952
  • End Use: Iron and steel products, other
  • NAICS: 331511
  • USDA: 1

Freight Class: Unions, pipe, of iron or steel, cast

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