Model: 6-55018-1

Shouldered And Recessed Washer

Properties:

Hole Diameter

Between 4.770 inches and 4.780 inches

Shoulder Diameter

Between 4.970 inches and 4.990 inches

Outside Diameter

Between 5.570 inches and 5.590 inches

Recess Diameter

4.710 inches

Shoulder Height

0.098 inches

Material Thickness

Between 0.080 inches and 0.100 inches

End Application

Item is landing gear specific

Criticality Code Justification

Agav

Recess Angle

Between 89.5 degrees and 90.5 degrees

Material

Aluminum alloy 2024

Material Specification

Ww-t-700/3 federal specification single material response or qq-a-200/3 federal specification single material response

Material Specification

Ww-t-700/3 federal specification single material response or qq-a-200/3 federal specification single material response

Surface Treatment

Anodize

Style Designator

Shouldered and recessed

NSN

5310-00-596-4757

Part Number

6-55018-1

Description

Washer,shouldered And Recessed

CAGE

81205

A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing, sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.

Part 6-55018-1 NSN 5310-00-596-4757

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15935

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

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Schedule B and Export

Schedule B: 7616108000
SITC: 69440
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Cotters, cotter-pins, washers and similar articles, of aluminum