Model: AS21921

Tube Coupling Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Fabrication Method
Any acceptable
Nut Style
Tube coupling
Nut Height
1.050 inches
End Application
Aircraft application
Width Across Flats
2.000 inches
Length To Shoulder
Between 0.668 inches and 0.688 inches
Smallest Inside Diameter
Between 1.472 inches and 1.492 inches
Thread Series
Unj
Thready Qty Per Inch (tpi)
12
Thread Size
1.625 inches
Tube Outside Diameter
1.250 inches
Seat Angle
45.00 degrees
Material
Aluminum alloy 2014 or aluminum alloy 2024
Material Specification
Qq-a-367, t6 federal specification single material response or qq-a-225/6, t6, t62 or t851 federal specification single material response
Surface Treatment
Anodize
Surface Treatment Specification
Mil-a-8625, type 2, class 1 military specification single treatment response
Specification Data
96906-ms21921 government standard
NSN
4730-00-639-9414
Part Number
AS21921
Description
Nut,tube Coupling
CAGE
81343

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 AS21921 NSN 4730-00-639-9414

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:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.2000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
013540
UFC:
05680
LTL:
70.0
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 7609000000
  • SITC: 68427
  • End Use: Finished metal shapes
  • NAICS: 332919
  • USDA: 1

Freight Class: Aluminum tube or pipe fittings (couplings,elbows sleeves)

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