Model: 70186-8S

Convex Washer

Special Features:

Comp h11 rockwell c scale 52.0 min and rockwell c scale 56.0 max, recess cut 0.624 in. Min and 0.634 in. Max

Properties:

Hole Diameter

Between 0.510 inches and 0.520 inches

Outside Diameter

Between 0.870 inches and 0.880 inches

Material Thickness

Between 0.195 inches and 0.205 inches

Surface Finish

32.0 microinches top

Color

Black

Material

Steel comp 4130 or steel comp 8740 or steel comp h11

Material Specification

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

Surface Treatment

Nickel and cadmium

Surface Treatment Specification

Ams2416 assn standard 1st treatment response and ams2416 assn standard 2nd treatment response

Style Designator

Convex

Specification Data

81205-bacw10ca manufacturers standard

NSN

5310-01-047-9477

Part Number

70186-8S

Description

Washer,convex

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 raised to form a curved or spherical contour. See also washer (1), concave. Excludes bearing, washer thrust.

Part 70186-8S NSN 5310-01-047-9477

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15931

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