Model: S1620-64175-2

Concave Washer

Properties:

Hole Diameter

0.368 inches

Radius

Between 0.245 inches and 0.255 inches

Outside Diameter

0.875 inches

Recess Diameter

Between 0.443 inches and 0.453 inches

Material Thickness

0.078 inches

Min. Tensile Strength (psi)

150000 pounds per square inch

Hardness Rating

Between 34.0 rockwell c and 38.0 rockwell c

Material

Steel

Material Specification

Mil-s-6758 military specification single material response

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416 federal specification single treatment response

Style Designator

Concave

NSN

5310-00-529-8471

Part Number

S1620-64175-2

Description

Washer,concave

CAGE

78286

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 S1620-64175-2 NSN 5310-00-529-8471

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