Model: MK90-10B

Lock Washer

Special Features:

0.00013 in. Min plating

Properties:

Hole Diameter

Between 0.146 inches and 0.150 inches

Outside Diameter

Between 0.323 inches and 0.333 inches

Overall Height

Between 0.045 inches and 0.055 inches

Material Thickness

Between 0.014 inches and 0.020 inches

Hardness Rating

Between 40.0 rockwell c and 44.0 rockwell c

Material

Steel comp 1050

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416 federal specification single treatment response

Style Designator

Dome internal teeth

NSN

5310-01-112-1575

Part Number

MK90-10B

Description

Washer,lock

CAGE

04713

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 MK90-10B NSN 5310-01-112-1575

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

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: 7318210000
SITC: 69422
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Spring washers and other lock washers, iron or steel