Model: SMA120118

Shouldered And Recessed Washer

Properties:

Hole Diameter

Between 0.091 inches and 0.101 inches

Shoulder Diameter

Between 0.245 inches and 0.255 inches

Outside Diameter

Between 0.547 inches and 0.578 inches

Shoulder Height

Between 0.005 inches and 0.010 inches

Material Thickness

Between 0.045 inches and 0.055 inches

Recess Angle

Between 81.5 degrees and 82.5 degrees

Material

Aluminum alloy 2024

Material Specification

Qq-a-268 federal specification single material response

Surface Treatment

Anodize

Surface Treatment Specification

Mil-f-14072 military specification single treatment response

Style Designator

Shouldered and recessed

NSN

5310-00-582-5971

Part Number

SMA120118

Description

Washer,shouldered And Recessed

CAGE

80063

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 SMA120118 NSN 5310-00-582-5971

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

194120

UFC:

95100

LTL:

RATING VARIABLE

LCL:

77.5

WCC:

713

TCC:

SHC:

ACC:

Trailers/Vehicles

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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