Model: KFN591-4

Hexago Extended Washer Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Washer Outside Diameter

0.425 inches

Lubrication

Dry film lubricant

Overall Height

0.315 inches

Nut Style

Hexagon

Washer Thickness

Between 0.087 inches and 0.097 inches

End Application

Cl-215, aircraft

Width Across Flats

Between 0.305 inches and 0.313 inches

Thread Series

Unjc

Thready Qty Per Inch (tpi)

Thread Size

0.250 inches

Material

Aluminum alloy 7075

Material Specification

Qq-a-225/9 federal specification single material response

Surface Treatment

Anodize

Surface Treatment Specification

Mil-h-6088 military specification single treatment response

NSN

5310-01-513-9858

Part Number

KFN591-4

Description

Nut,plain,extended Washer,hexago

CAGE

15653

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.

Part KFN591-4 NSN 5310-01-513-9858

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

04889

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: 7616995095
SITC: 69979
End Use: Finished metal shapes
NAICS: 332999
USDA: 1

Freight Class: Articles of aluminum nesoi