Model: HK52738-6

Extended Washer Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Washer Outside Diameter

Between 0.640 inches and 0.650 inches

Overall Height

Between 0.295 inches and 0.305 inches

Nut Style

Hexagon

Washer Thickness

0.025 inches

Width Across Flats

Between 0.430 inches and 0.439 inches

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Thread Size

0.375 inches

Material

Iron alloy 660

Material Specification

Ams 5737 assn standard single material response

Precious Material And Location

silver

Precious Material

Silver

Surface Treatment

Silver

Surface Treatment Specification

Ams 2410 assn standard single treatment response

NSN

5310-01-411-2501

Part Number

HK52738-6

Description

Nut,self-locking,extended Washer

CAGE

15653

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 HK52738-6 NSN 5310-01-411-2501

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:

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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