Model: 66-17218-1

Convex Washer

Properties:

Hole Diameter

0.562 inches

Outside Diameter

1.750 inches

Material Thickness

0.250 inches

Material

Steel comp 4130 or steel comp 4340

Material Specification

Mil-s-18729 military specification 1st material response or mil-s-5000 military specification 2nd material response

Style Designator

Convex

NSN

5310-01-199-3789

Part Number

66-17218-1

Description

Washer,convex

CAGE

81205

A washer which is round with a centrally located hole. One bearing surface is smooth, flat, and unbroken, the other bearing surface is smooth, unbroken, and is raised to form a curved or spherical contour. See also washer (1), concave. Excludes bearing, washer thrust.

Part 66-17218-1 NSN 5310-01-199-3789

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15931

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:

194160

UFC:

55210

LTL:

50.0

LCL:

50.0

WCC:

573

TCC:

SHC:

ACC:

Equipment for Aircraft

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Schedule B and Export

Schedule B: 7318220000
SITC: 69422
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Washers other than lock washers, iron or steel