Model: MS21080-4K

Plate Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Mounting Hole Diameter
Between 0.098 inches and 0.103 inches
Nut Style
Plate
Nut Length
1.062 inches
Nut Height
Between 0.240 inches and 0.375 inches
Plate Thickness
0.075 inches
Plate Width
Between 0.438 inches and 0.516 inches
Nut Mounting Provision
Countersunk holes or dimpled holes
Mounting Provision Location
Opposite nut projection side
Mounting Hole Arrangement Style
2 holes
Distance From Aperture Center To Mounting Hole Center
Between 0.339 inches and 0.349 inches
Center To Center Distance Between Mounting Holes Along Length
Between 0.310 inches and 0.314 inches
Tempurature Rating
250.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
28
Hardness Rating
32.0 rockwell c
Thread Size
0.250 inches
Countersink Angle
88.0 degrees nut and 102.0 degrees nut
Mounting Hole Countersink Angle
Between 98.0 degrees and 102.0 degrees
Material
Plastic polyamide locking insert
Material
Steel nut
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
NSN
5310-00-728-5516
Part Number
MS21080-4K
Description
Nut,self-locking,plate
CAGE
80205

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 MS21080-4K NSN 5310-00-728-5516

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:
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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