Model: 856004-003

Concave Washer

Special Features:

O.D.Flat on one side; heat treat to 160.000 to 180.000 psi per mil-h-6875

Properties:

Hole Diameter

0.672 inches

Radius

0.620 inches

Outside Diameter

1.900 inches

Material Thickness

0.285 inches

Material

Steel comp 4340

Material Specification

Mil-s-5000 military specification single material response

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416, type ii, class 2 federal specification single treatment response

Style Designator

Concave

NSN

5310-01-238-7749

Part Number

856004-003

Description

Washer,concave

CAGE

76301

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 856004-003 NSN 5310-01-238-7749

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:

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