Model: C20814-4-4

Plate Self-locking Nut

Special Features:

Nut, plate-cap height .825 + or -.010, cap o.D. .550 + or - .010, base plate top lt corner to rt side lower corner 1.05 + or - .010

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Nut Style

Plate (floating)

Nut Length

Between 1.235 inches and 1.255 inches

Nut Height

Between 0.625 inches and 0.645 inches

Plate Thickness

Between 0.050 inches and 0.070 inches

Plate Width

Between 0.797 inches and 0.817 inches

Nut Counterbore Depth

0.240 inches nut and 0.260 inches nut

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Thread Size

0.250 inches

Material

Iron alloy 660 cap

Material

Nickel alloy 718 nut

Material Specification

Ams-5525 assn standard 1st material response cap or ams-5726 assn standard 2nd material response cap or ams-5731 assn standard 3rd material response cap or ams-5732 assn standard 4th material response cap or ams-5737 assn standard 5th material response cap

Material Specification

Ams-5596 assn standard 1st material response nut or ams-5597 assn standard 2nd material response nut or ams-5662 assn standard 3rd material response nut or ams-5663 assn standard 4th material response nut or ams-5664 assn standard 5th material response nut

Surface Treatment

Passivate cap

Surface Treatment

Passivate nut

NSN

5310-01-485-6748

Part Number

C20814-4-4

Description

Nut,self-locking,plate

CAGE

81755

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 C20814-4-4 NSN 5310-01-485-6748

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05280

FIIG:

A021A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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Schedule B and Export

Schedule B: 7508900000
SITC: 69975
End Use: Finished metal shapes
NAICS: 332999
USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)