Model: 20500-19

Lock Washer

Special Features:

Dyed deep yellow

Properties:

Hole Diameter

Between 0.168 inches and 0.178 inches

Outside Diameter

0.280 inches

Material Thickness

Between 0.0312 inches and 0.0372 inches

Material

Copper alloy

Surface Treatment

Cadmium and chromate

Style Designator

Split helical-right hand

Departure From Cited Designator

As modified by material spec

NSN

5310-00-167-0658

Part Number

20500-19

Description

Washer,lock

CAGE

64547

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 20500-19 NSN 5310-00-167-0658

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:

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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