Model: 2498571

Shouldered And Recessed Washer

Special Features:

Shoulder beveled on a 30 degrees angle

Properties:

Hole Diameter

Between 0.4385 inches and 0.4435 inches

Outside Diameter

1.115 inches

Recess Diameter

Between 0.4635 inches and 0.4785 inches

Shoulder Height

Between 0.111 inches and 0.123 inches

Material Thickness

Between 0.128 inches and 0.138 inches

Hardness Rating

Between 27.0 rockwell c and 35.0 rockwell c

Criticality Code Justification

Zzzw

Recess Angle

90.0 degrees

Color

Black

Material

Steel comp 4140h

Surface Treatment

Oxide film

Surface Treatment Specification

Mil-c-13924, class 1 military specification single treatment response

Style Designator

Shouldered and recessed

Departure From Cited Document

As modified by special quality control testing for mk 48 torpedo

NSN

5310-01-031-8410

Part Number

2498571

Description

Washer,shouldered And Recessed

CAGE

10001

A washer, round in shape, having a centrally located hole. One bearing surface is flat, the other surface is in the form of a raised shoulder (boss) having a flat bearing surface. Either or both of the bearing surfaces must be broken by a counterbore, countersink, or similar shaped recess. The thickness of the shoulder (boss) must not exceed 25 percent of the shoulder (boss) diameter. For items having a shoulder (boss) of greater thickness, use bearing, sleeve; bushing, sleeve; or spacer, sleeve. Excludes insulator, washer and thrust type washers.

Part 2498571 NSN 5310-01-031-8410

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15935

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.1000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

194160

UFC:

55210

LTL:

50.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7616108000
SITC: 69440
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Cotters, cotter-pins, washers and similar articles, of aluminum