Model: 313297

Concave Washer

Properties:

Hole Diameter

Between 0.280 inches and 0.282 inches

Outside Diameter

Between 0.557 inches and 0.567 inches

Material Thickness

Between 0.065 inches and 0.075 inches

Material

Steel comp 303

Material Specification

Qq-s-764 federal specification single material response

Surface Treatment

Passivate

Surface Treatment Specification

Mil-s-5002 military specification single treatment response

Style Designator

Concave

NSN

5310-01-171-9891

Part Number

313297

Description

Washer,concave

CAGE

22915

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 recessed to form a curved or spherical contour. See also washer (1), convex. Excludes washer (1), recessed and bearing, washer, thrust.

Part 313297 NSN 5310-01-171-9891

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15930

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

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