Model: 02378-1

Extended Washer Self-locking Nut

Special Features:

Safety critical thread per federal standard h28/20 system 22

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Washer Outside Diameter

0.420 inches

Lubrication

Dry film lubricant

Overall Height

Between 0.173 inches and 0.203 inches

Nut Style

Slotted hexagon

Washer Thickness

0.020 inches

Width Across Flats

Between 0.305 inches and 0.315 inches

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Thread Size

0.250 inches

Criticality Code Justification

Feat

Material

Steel comp 1035 or steel comp 1042 or steel comp 1137 or steel comp 4027 or steel comp 4037 or steel comp 8740

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, ty2, cl2 federal specification single treatment response

NSN

5310-01-388-7956

Part Number

02378-1

Description

Nut,self-locking,extended Washer

CAGE

14153

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part 02378-1 NSN 5310-01-388-7956

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

29730

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

573

TCC:

SHC:

ACC:

Construction Materials

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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