Model: 355-221-0007

Lock Washer

Properties:

Hole Diameter

Between 0.141 inches and 0.151 inches

Outside Diameter

0.239 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 comp 302 or steel comp 420

Material Specification

66, uns s30200 federal standard 1st material response or 66, uns s42000 federal standard 2nd material response

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Style Designator

Split helical-right hand

Specification Data

81348-ff-w-84 government specification and 24617-431754 manufacturers standard and 96906-ms35337/canceled/ government standard

Nondefinitive Specification/std Data

B class and 1 style

NSN

5310-00-043-1754

Part Number

355-221-0007

Description

Washer,lock

CAGE

99932

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 355-221-0007 NSN 5310-00-043-1754

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

194160

UFC:

55210

LTL:

50.0

LCL:

50.0

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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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