Model: KBK430-4

Shouldered And Recessed Washer

Properties:

Hole Diameter

Between 0.190 inches and 0.200 inches

Shoulder Diameter

Between 0.290 inches and 0.300 inches

Outside Diameter

Between 0.515 inches and 0.525 inches

Recess Diameter

0.235 inches

Shoulder Height

0.052 inches

Material Thickness

Between 0.028 inches and 0.034 inches

Hardness Rating

Between 30.0 rockwell c and 38.0 rockwell c

Recess Angle

90.0 degrees

Heat Treatment

As fabricated

Material

Steel

Material Specification

Ams 5612 assn standard single material response

Style Designator

Shouldered and recessed

NSN

5310-00-017-0523

Part Number

KBK430-4

Description

Washer,shouldered And Recessed

CAGE

32904

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 KBK430-4 NSN 5310-00-017-0523

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