Model: UWN428

Internal Wrench Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Width Between Flats
Between 0.375 inches and 0.379 inches
Locking Feature
Prevailing torque all metal design
Internal Drive Style
Double hexagon
Nut Style
Internal wrenching
Nut Diameter
0.531 inches
Nut Height
0.656 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Material
Steel
Surface Treatment
Cadmium or zinc
Specification Data
81205-nas443 professional/industrial association standard
NSN
5310-00-488-8711
Part Number
UWN428
Description
Nut,self-locking,internal Wrench
CAGE
56878

A cylindrical-shaped nut, the end opposite the bearing surface being designed with an internal socket or splines for use with an inserted wrench. An integral feature is incorporated for locking on the threads of a mating member.

Part UWN428 NSN 5310-00-488-8711

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05284
FIIG:
A021A0
Concept No.:
1
App. Key:
BX
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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
10.0000lbs
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:
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
Z
ACC:
Equipment for Aircraft

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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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