Model: 004-002451

Lock Washer

Properties:

Hole Diameter

Between 0.141 inches and 0.150 inches

Outside Diameter

Between 0.285 inches and 0.300 inches

Material Thickness

Between 0.016 inches and 0.020 inches

Hardness Rating

Between 40.0 rockwell c and 50.0 rockwell c

Countersink Angle

Between 80.0 degrees and 84.0 degrees

Material

Steel comp 1050 or steel comp 1551 or steel comp 1552 or steel comp 1053 or steel comp 1054 or steel comp 1055 or steel comp 1059 or steel comp 1060 or steel comp 1561 or steel comp 1064

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416, type 2, cl 3 federal specification single treatment response

Style Designator

Countersink external teeth

NSN

5310-00-167-0859

Part Number

004-002451

Description

Washer,lock

CAGE

26916

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 004-002451 NSN 5310-00-167-0859

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