Model: 2151100078

Lock Washer

Properties:

Hole Diameter

Between 0.115 inches and 0.121 inches

Outside Diameter

0.209 inches

Material Thickness

Between 0.025 inches and 0.031 inches

Hardness Rating

Between 45.0 rockwell c and 53.0 rockwell c

Material

Steel

Material Specification

Fed standard 66, aisi c1060 through c1080 or sae 1060 through 1080 military standard single material response

Surface Treatment

Cadmium or zinc

Surface Treatment Specification

Qq-p-416, or qq-z-325 federal specification single treatment response

Style Designator

Split helical-right hand

Nondefinitive Specification/std Data

2 style and a class

NSN

5310-00-209-5311

Part Number

2151100078

Description

Washer,lock

CAGE

57057

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 2151100078 NSN 5310-00-209-5311

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