Model: VN181B1-054-4

Plate Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Counterbore Diameter
0.317 inches nut
Mounting Hole Diameter
Between 0.130 inches and 0.135 inches
Nut Style
Plate
Nut Length
1.396 inches
Nut Height
0.516 inches
Plate Thickness
0.025 inches
Plate Width
0.641 inches
Nut Counterbore Depth
0.250 inches nut
Nut Mounting Provision
Straight holes
Mounting Hole Arrangement Style
2 holes
Distance From Aperture Center To Mounting Hole Center
Between 0.495 inches and 0.505 inches
Center To Center Distance Between Mounting Holes Along Length
Between 0.310 inches and 0.314 inches
Tempurature Rating
800.0 degrees fahrenheit
Thread Series
Unf
Features Provided
Floating nut
Thready Qty Per Inch (tpi)
24
Thread Size
0.312 inches
Part Name Assigned By Controlling Agency
Navy special project
Material
Iron alloy 660
Material Specification
Ams 5525 assn standard single material response or ams 5732 assn standard single material response
Material Specification
Ams 5525 assn standard single material response or ams 5732 assn standard single material response
Precious Material
Silver
Surface Treatment
Silver
NSN
5310-00-438-8621
Part Number
VN181B1-054-4
Description
Nut,self-locking,plate
CAGE
92215

A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. An integral feature is incorporated for locking on the threads of a mating member.

Part VN181B1-054-4 NSN 5310-00-438-8621

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05280
FIIG:
A021A0
Concept No.:
1
App. Key:
BZ
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:
S
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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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