Model: 81388

Hex Castellated Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Nut Style

Castellated, hexagon

Nut Height

0.260 inches

End Application

Pacer dawn

Width Across Flats

0.371 inches

Thread Series

Unf

Thready Qty Per Inch (tpi)

Thread Size

0.190 inches

Material

Steel comp 630

Material Specification

Ams-5643 federal specification single material response

Surface Treatment

Passivate

Surface Treatment Specification

Mil-s-5002 military specification single treatment response

NSN

5310-01-386-5928

Part Number

81388

Description

Nut,self-locking,castellated,hex

CAGE

55822

A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. An integral feature is incorporated for locking on the threads of a mating member. The slots when used in conjunction with a solid or split (cotter) pin, act as an extra "fail safe" feature in critical applications. Excludes nut (1), self-locking, slotted, hexagon.

Part 81388 NSN 5310-01-386-5928

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

29725

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: 7318160000
SITC: 69421
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Nuts of iron or steel