NSN 4730-01-521-6297

Tube Fitting Locknut
DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
N/A
UOM:
1 EA
NIIN:
015216297

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Inventory

 

This product may be available in the following quantities and conditions.

  • NE: 286
  • NS: 1

Please note that inventory for this NSN was updated 10/03/2025 and may have changed since then. Request a quote for up to date pricing and availability.

Product Definition Definition of approved item name (AIN): "LOCKNUT,TUBE FITTING"

An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.

4730-01-521-6297 Spec. NSN part characteristics

MRC
Name
Detail
MRC:
AAJD
Thread Class
3b
MRC:
AAJF
Thread Direction
Right-hand
MRC:
ACTA
Nut Style
Tube fitting locknut
MRC:
ADEA
Nut Height
0.281 inches
MRC:
AGAV
End Application
F-22, raptor
MRC:
ASDB
Width Across Flats
0.688 inches
MRC:
BZRR
Thread Series
Unf
MRC:
CFPT
Packing Recess Diameter
0.608 inches
MRC:
CFPW
Packing Recess Depth
0.042 inches
MRC:
CMLP
Thready Qty Per Inch (tpi)
20
MRC:
CQJX
Thread Size
0.438 inches
MRC:
CQRJ
Tube Outside Diameter
0.250 inches
MRC:
MATT
Material
Titanium alloy
MRC:
MDCL
Material Specification
Ams4928, type 6al-4v assn standard single material response
MRC:
SFTT
Surface Treatment
Anodize or phosphate
MRC:
STDC
Surface Treatment Specification
Ams2488 assn standard single treatment response and ams2486 assn standard single treatment response
MRC:
ZZZK
Specification Data
8143-as5179 professional/industrial association standard

Cross Reference Parts Part numbers that meet the specification outlined on this page and set by the OEM

Part Number
Cage
RNCC
RNVC
DAC
RNAAC
Status
MSDS
SADC
Part Number:
AS5179T04
Cage Code:
81343
RNCC:
3
RNVC:
2
DAC:
A
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Indicates a design/source control reference item
Inidicates part number has been superseded

Identification Item Identification Guide (IIG) and Item Name Code (INC)

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
17645
FIIG:
A021A0
Concept No.:
App. Key:
CW
Cond. Code:
1
Status:
A

Special material and handling

HMIC
PMIC
ESD
ENAC
ADPE
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
ADPE:
0
CRITL:
X
Hazmat (HMIC) N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Precious Metals (PMIC) A

Item does not contain precious metal.

ADPE 0

Represents items with no adp components

Criticality X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.