Model: A20478

Lock Washer

Properties:

Hole Diameter

Between 0.255 inches and 0.263 inches

Outside Diameter

0.489 inches

Material Thickness

0.062 inches

End Application

W/s: stream (std. Tensioned replenishment at sea method); aircraft, c-2a (repreocured); vehicle, aircraft refueler r-14; test consoles, mini-sace; support equipment, b-1 aircraft; teletype, model 28; helicopter, mh-53e; machine gun, .50 cal, m2, hb, flex & hvytt fixed; aircraft (ac-130h, mc-130h, ec-130e, hc-130); mrap rg-33 and rg-33 auv

Hardness Rating

Between 45.0 rockwell c and 53.0 rockwell c

Material

Steel comp 1060 or steel comp 1561 or steel comp 1064 or steel comp 1065 or steel comp 1566 or steel comp 1069 or steel comp 1070 or steel comp 1572 or steel comp 1074 or steel comp 1075 or steel comp 1080

Surface Treatment

Phosphate

Surface Treatment Specification

Mil-p-16232 type 2 military specification single treatment response

Style Designator

Split helical-right hand

Nondefinitive Specification/std Data

A class and 2 style

NSN

5310-00-274-8715

Part Number

A20478

Description

Washer,lock

CAGE

U4574

A washer which is usually round with a centrally located hole. Its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. It may be made of one or two pieces

Part A20478 NSN 5310-00-274-8715

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

14218

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:

0.3000lbs

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:

194160

UFC:

55210

LTL:

50.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

End Items End applications NSN 5310-00-274-8715 is a component of

Airc C-2a (repreocured); Vehicle W/s:stream (std. Tensioned Replenishment At Sea Method); Aircraft
Hc-130) Ec-130e Mc-130h & Hvytt Fixed; Aircraft (ac-130h
B-1 Aircraft Support Equipment
Aircraft Refueler R-14 Vehicle
Stream (std. Tensioned Replenishment At Sea Method)
Hc-130) Ec-130e Mc-130h Sof ( Ac-130h Aircraft
Mini-sace Test Consoles
C-2a (reprocured) Aircraft
Model 28 Teletype
Flex & Hvytt Fixed Hb M2 .50cal Machine Gun
Blue Ridge Class Lcc-19
Austin Ship Class Lpd-4 Amphibious Transport Docks
013808225
Ambulance Truck
013808233
Utility Truck
011289551
Utility Truck
001338484
106 Millimeter Recoilless Rifle
013723933
Utility Truck
012747389
Diesel Engine Generator Set
011467191
Utility Truck
013808213
Utility Truck
011077155
Utility Truck
013719582
Utility Truck
011289552
Utility Truck
001338485
106 Millimeter Recoilless Rifle
009326468
Test Bench Assembly
013808290
Ambulance Truck
004396242
Full Tracked Recovery Vehicle
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
005475593
Nozz Panel Assembly
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
010861653
Rail Type Trailer
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
013689500
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
003328092
Nozz Panel Assembly
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
013719585
Ambulance Truck
001727542
Nozz Panel Assembly
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
009172244
Motor-generator-power Supply
013723932
Utility Truck
001200500
Nozz Panel Assembly
011467189
Utility Truck
011104660
Tracked Ammunition Carrier
012747387
Diesel Engine Generator Set
012747388
Diesel Engine Generator Set
013808604
Utility Truck
013808229
Utility Truck
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
011104660
Tracked Ammunition Carrier
013789997
Transportable Shelter Lift Dolly Set
011104660
Tracked Ammunition Carrier
010543833
Fork Lift Truck
010543833
Fork Lift Truck
011467194
Ambulance Truck
012755061
Diesel Engine Generator Set
007951797
Full Tracked Combat Engineer Vehicle
013469317
Utility Truck
010543833
Fork Lift Truck
010543833
Fork Lift Truck
011467187
Utility Truck
010543833
Fork Lift Truck
007951797
Full Tracked Combat Engineer Vehicle
007951797
Full Tracked Combat Engineer Vehicle
007951797
Full Tracked Combat Engineer Vehicle
011112274
Ambulance Truck
007951797
Full Tracked Combat Engineer Vehicle
007951797
Full Tracked Combat Engineer Vehicle
007951797
Full Tracked Combat Engineer Vehicle
007951797
Full Tracked Combat Engineer Vehicle
007951797
Full Tracked Combat Engineer Vehicle
011467188
Utility Truck
013723934
Ambulance Truck
011467190
Utility Truck
011077156
Utility Truck
011077153
Utility Truck
013719583
Utility Truck
004396242
Full Tracked Recovery Vehicle
013719581
Utility Truck
013723935
Ambulance Truck
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
011467193
Utility Truck
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013719584
Utility Truck
010414590
Self-propelled Medium Howitzer
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013719580
Utility Truck
013719579
Utility Truck
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013523021
Tracked Ammunition Carrier
013719578
Utility Truck

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Phone:	+1 470-231-0824
Email:	Contact Form »

Schedule B and Export

Schedule B: 7318210000
SITC: 69422
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Spring washers and other lock washers, iron or steel