Part Number 4020520

Extended Washer Self-locking Nut
Stock Availability  condition code chart

Part number 4020520 is in stock in the following quantities and conditions.

  • NS: 8
  • NE: 32

Note: Availability of this item was last updated 07/05/2023 and may have changed since then. Request a quote for up to date pricing and availability.

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Part Number
DEMIL
Shelf Life
UOM
NIIN
Part:
4020520
Demil:
No
Shelf Life:
UOM:
NIIN:
003957841

Part Information
Upper hexagon castellated 6 places center to center along flats, 0.125 in. Min 0.155 in. Maximum through w, 0.187 in. Depth

NSN
National Stock Number:
5310-00-395-7841 5310003957841
TXT
Description:
Extended Washer Self-locking Nut
INC
INC
Item Name Code:
29730
MRC:
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.AAJD
Thread Class:
3b
MRC:
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.AAJF
Thread Direction:
Right-hand
MRC:
An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.AAUM
Locking Feature:
Prevailing torque all metal design
MRC:
None.AAVX
Washer Outside Diameter:
0.579 inches
MRC:
The distance measured in a straight line from the bottom to the top of an item.ABKW
Overall Height:
Between 0.391 inches and 0.421 inches
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.ACTA
Nut Style:
Hexagon
MRC:
None.ADEM
Washer Thickness:
0.070 inches
MRC:
The shortest straight line between flats,perpendicular to the height.ASDB
Width Across Flats:
Between 0.430 inches and 0.440 inches
MRC:
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.BZRR
Thread Series:
Unjf
MRC:
The number of threads on the item per linear inch measured on a line parallel to the thread axis.CMLP
Thready Qty Per Inch (tpi):
24
MRC:
A designation that is used for the purpose of general identification of the thread.CQJX
Thread Size:
0.375 inches
MRC:
The included angle of the countersink.CRSQ
Countersink Angle:
85.0 degrees nut and 95.0 degrees nut
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Iron alloy 660
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Ams 5737 assn standard single material response

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