Model: N405P8C

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 45.0 rockwell c and 53.0 rockwell c

Material

Steel comp 1060 or steel comp 1080

Material Specification

66, uns g10600 through uns g10800 federal standard all material responses

Surface Treatment

Cadmium and chromate or zinc and chromate

Surface Treatment Specification

Qq-p-416, type 2, class 3 federal specification 1st treatment response or qq-z-325, type 2, class 3 federal specification 2nd treatment response

Style Designator

Split helical-right hand

Specification Data

81348-ff-w-84 government specification and 96906-ms35337/canceled/ government standard and 24617-131182 manufacturers standard

Departure From Cited Document

Ff-w-84, paragraph 3.3.1 cadmium plating or paragraph 3.3.2 zinc coating

NSN

5310-00-013-1182

Part Number

N405P8C

Description

Washer,lock

CAGE

03538

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 N405P8C NSN 5310-00-013-1182

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