Model: NAS1640-416C

Lock Washer

Properties:

Hole Diameter

Between 0.255 inches and 0.267 inches

Outside Diameter

0.493 inches

Material Thickness

Between 0.062 inches and 0.072 inches

Material

Stainless steel

Material Specification

66 federal standard single material response

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416, tyii, cl2 federal specification single treatment response

Style Designator

Split helical-right hand

NSN

5310-01-545-8341

Part Number

NAS1640-416C

Description

Washer,lock

CAGE

80205

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 NAS1640-416C NSN 5310-01-545-8341

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: 7318210000
SITC: 69422
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Spring washers and other lock washers, iron or steel