Model: 70189-3S

Concave Washer

Special Features:

Color black

Properties:

Hole Diameter

Between 0.295 inches and 0.305 inches

Radius

Between 0.360 inches and 0.390 inches

Outside Diameter

Between 0.455 inches and 0.465 inches

Recess Diameter

Between 0.455 inches and 0.465 inches

Material Thickness

0.065 inches

Hardness Rating

Between 52.0 rockwell c and 56.0 rockwell c

Surface Finish

32.0 microinches top

Material

Steel comp h11 or steel comp 8740 or steel comp 4130

Material Specification

Ams 6487 assn standard 1st material response or mil-s-6049 military specification 2nd material response or mil-s-6758 military specification 3rd material response or mil-s-18729 military specification 3rd material response

Surface Treatment

Nickel and cadmium

Surface Treatment Specification

Ams 2416 assn standard 1st treatment response and ams 2416 assn standard 2nd treatment response

Style Designator

Concave

Specification Data

81205-bacw10ca manufacturers standard

NSN

5310-00-230-7066

Part Number

70189-3S

Description

Washer,concave

CAGE

56878

A washer which is round with a centrally located hole. One bearing surface is smooth, flat, and unbroken, the other bearing surface is smooth, unbroken, and is recessed to form a curved or spherical contour. See also washer (1), convex. Excludes washer (1), recessed and bearing, washer, thrust.

Part 70189-3S NSN 5310-00-230-7066

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15930

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: 7318220000
SITC: 69422
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Washers other than lock washers, iron or steel