Model: S1620-61545

Convex Washer

Special Features:

45 deg, 0.075 chamfer at bore on flat surface

Properties:

Hole Diameter

Between 0.760 inches and 0.770 inches

Outside Diameter

Between 1.240 inches and 1.250 inches

Min. Tensile Strength (psi)

150000 pounds per square inch

Hardness Rating

Between 34.0 rockwell c and 38.0 rockwell c

Surface Finish

100.0 microinches all surfaces

Heat Treatment

As fabricated

Material

Steel comp 4130

Material Specification

Mil-t-6736 military specification single material response

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416 federal specification single treatment response

Style Designator

Convex

NSN

5310-00-637-3400

Part Number

S1620-61545

Description

Washer,convex

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

Part S1620-61545 NSN 5310-00-637-3400

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:

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