Model: MS21921-8C

Tube Coupling Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Fabrication Method
Any acceptable
Nut Style
Tube coupling
Nut Height
Between 0.850 inches and 0.870 inches
Width Across Flats
0.875 inches
Length To Shoulder
Between 0.599 inches and 0.619 inches
Smallest Inside Diameter
Between 0.552 inches and 0.557 inches
Thread Series
Unjf
Thready Qty Per Inch (tpi)
16
Thread Size
0.750 inches
Tube Outside Diameter
0.500 inches
Seat Angle
45.00 degrees
Material
Stainless steel
Surface Treatment
Passivate
NSN
4730-00-825-2091
Part Number
MS21921-8C
Description
Nut,tube Coupling
CAGE

An internally threaded nut which has either an internal seat or shoulder and/or is designed to be used with a ferrule, to mate with the seat of an externally threaded tube fitting to form a leakproof connection. Excludes nut (1), tube coupling, reducing; and nut (1), union.

Part MS21921-8C NSN 4730-00-825-2091

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
03859
FIIG:
A021A0
Concept No.:
1
App. Key:
CX
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

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Schedule B and Export
  • Schedule B: 7318160000
  • SITC: 69421
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Nuts of iron or steel

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