Model: MS21921-4S

Tube Coupling Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Fabrication Method
Any acceptable
Nut Style
Tube coupling
Nut Height
Between 0.710 inches and 0.730 inches
Width Across Flats
0.562 inches
Length To Shoulder
Between 0.537 inches and 0.557 inches
Smallest Inside Diameter
Between 0.300 inches and 0.305 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
20
Thread Size
0.438 inches
Tube Outside Diameter
0.250 inches
Seat Angle
45.00 degrees
Material
Stainless steel
Surface Treatment
Passivate
NSN
4730-00-825-2086
Part Number
MS21921-4S
Description
Nut,tube Coupling
CAGE
96906

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 MS21921-4S NSN 4730-00-825-2086

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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