Model: 988780-11901

Lock Washer

Properties:

Hole Diameter

Between 0.168 inches and 0.178 inches

Outside Diameter

0.280 inches

Material Thickness

Between 0.031 inches and 0.037 inches

Hardness Rating

Between 35.0 rockwell c and 43.0 rockwell c

Material

Steel comp 302 or steel comp 420

Material Specification

Sae j405, uns s30200 assn standard 1st material response or qq-s-763, class 5, type f federal specification 2nd material response

Style Designator

Split helical-right hand

Supplementary Features

LIGH-TS-ERI-ES,S

Specification Data

24617-429067 manufacturers standard and 81348-ff-w-84 government specification

Nondefinitive Specification/std Data

B class and 1 style

NSN

5310-00-042-9067

Part Number

988780-11901

Description

Washer,lock

CAGE

88818

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 988780-11901 NSN 5310-00-042-9067

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