Model: MS21042-4

Extended Washer Self-locking Nut

Properties:

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Washer Outside Diameter

0.420 inches

Overall Height

Between 0.204 inches and 0.219 inches

Nut Style

Hexagon

Washer Thickness

0.019 inches

End Application

4910-01-539-6129

Width Across Flats

Between 0.304 inches and 0.316 inches

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Thread Size

0.250 inches

Part Name Assigned By Controlling Agency

Nut, self locking

Material

Stainless steel

NSN

5310-01-628-4949

Part Number

MS21042-4

Description

Nut,self-locking,extended Washer

CAGE

5B5M3

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 MS21042-4 NSN 5310-01-628-4949

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