Model: 520275

Flat Washer

Properties:

Cross Sectional Shape

Rectangular

Hole Diameter

Between 0.320 inches and 0.340 inches

Edge Shape

Round

Center Hole Shape

1 round

Center Hole Shape

Round

Thickness

Between 0.050 inches and 0.070 inches

Overall Diameter

Between 0.550 inches and 0.570 inches

Material

Copper

NSN

5310-00-737-5429

Part Number

520275

Description

Washer,flat

CAGE

02978

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes disk, valve, graphite impregnated and lubricated items.

Part 520275 NSN 5310-00-737-5429

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

13393

FIIG:

A022B0

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.1000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

194120

UFC:

95100

LTL:

RATING VARIABLE

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

End Items End applications NSN 5310-00-737-5429 is a component of

Aircraft Refueler R-14 Vehicle
Fire Pumps
Ffg-7 Sas (starting Air Sys)
C-2a (reprocured) Aircraft
Mh-53e Helicopter
Ah-1w Advance Attack Helicopter
Sh-60f Carrier Based Asw Helicopter
Hh-60h Search And Rescue Helicopter
Hh-60j Uscg Search And Rescue Helicopter
Lav-ad Air Defense Light Armored Vehicle
010969356
Cargo Carrier
010253733
Truck Tractor
010180637
Diesel Engine
012472379
En Installation Kit
014186654
Full Tracked Personnel Carrier
014122715
Diesel Engine
010469666
Fire Fighting Truck
008784285
Crushing And Screening Plant
009095949
Engine With Contain
011368745
Cargo Carrier
012460903
W Container Engine
013166617
Engine And Contain
006025006
Scoop Type Loader
012148820
Engine With Contain
002136478
Diesel Engine Governor
001128127
Diesel Engine Governor
006025013
Scoop Type Loader
001245390
Engine With Contain
010316154
Engine And Containe
012487644
W Container Engine
013696081
Cargo Carrier
012957458
Diesel Engine
002395819
Engine And Containe

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Schedule B and Export

Schedule B: 7415210000
SITC: 69432
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Copper washers including spring washers not threaded