OmniSynk Distribution Services

MS21080-4

Nut, Self-Locking, Plate

Part number
MS21080-4
NSN
5310-00-728-5516
NIIN
00-728-5516
Item name
Nut, Self-Locking, Plate
Manufacturer
Harvard Industries Inc.
CAGE code
72962
FSC
5310
Unit of issue
EA
DEMIL code
A

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Technical characteristics

Thread Class
3B
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Mounting Hole Diameter
0.098 inches minimum and 0.103 inches maximum
Nut Style
Plate
Nut Length
1.062 inches maximum
Nut Height
0.240 inches minimum and 0.375 inches maximum
Plate Thickness
0.075 inches maximum
Plate Width
0.438 inches minimum and 0.516 inches maximum
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
0.339 inches minimum and 0.349 inches maximum
Center to Center Distance Between Mounting Holes along Length
0.310 inches minimum and 0.314 inches maximum
Temp Rating
250.0 deg fahrenheit nominal
Thread Series
UNJF
Thread Quantity per Inch
28
Hardness Rating
32.0 rockwell C maximum
Nominal Thread Size
0.250 inches
Countersink Angle
88.0 degrees minimum nut and 102.0 degrees maximum nut
Mounting Hole Countersink Angle
98.0 degrees minimum and 102.0 degrees maximum
Material
Plastic polyamide locking insert
Material
Steel nut
Surface Treatment
Cadmium overall
Surface Treatment Document and Classification
QQ-P-416, ty 2, cl 3 fed spec single treatment response overall
Catalogue data is compiled from public DLA/FLIS sources and is provided for identification. Availability, condition and certification are confirmed on quotation. OmniSynk Distribution Services is a stocking distributor.

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