Concave Washer NSN 5310-01-284-2987

Item Description

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.

NSN: 5310-01-284-2987

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Features and Characteristics

Hole Diameter

Between 0.417 inches and 0.427 inches

Radius

Between 0.365 inches and 0.385 inches

Outside Diameter

Between 0.608 inches and 0.618 inches

Material Thickness

Between 0.106 inches and 0.126 inches

Hardness Rating

Between 40.0 rockwell c and 46.0 rockwell c

Surface Finish

32.0 microinches counterbore face

Special Features

Radius offset 0.359 in. Min 0.369 in. Max

Material

Steel comp 4130 or steel comp 8740

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

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, type 2, cl 3 federal specification single treatment response

Style Designator

Concave

FSC

5310 Nuts And Washers

NIIN

012842987

NSN

5310012842987

Manufacturer Part Numbers

Part numbers registered to this national stock number.

Part Number

Cage

Status

MSDS

Part Number:

M45595/7-03

Cage Code:

81349

Status:

MSDS:

Part Number:

MIL-W-45595/7

Cage Code:

81349

Status:

MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov

Schedule B Number: 7318220000
NAICS: 332722
SITC: 69422
Description: Washers other than lock washers, iron or steel
End Use (Code 12300):
Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-01-284-2987

What are the manufacturers of nsn 5310012842987?

Military Specifications (81349)

Does this nsn 5310012842987 have a shelf life?
No. This NSN does not have an applicable shelf life.

What is the formal definition of nsn 5310012842987
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.

Does nsn 5310012842987 contain any precious metals?
No precious metal content.

Does nsn 5310012842987 contain any hazardous materials?
No MSDS. No hazardous material.

What is the ESD classification of nsn 5310012842987?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)

INC

FIIG

App. Key

Cond. Code

Status

INC:

15930

FIIG:

A022B0

App. Key:

Cond. Code:

Status:

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On Time Delivery
Certificate of Conformance
Quality Inspected Parts
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