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Recessed Washer NSN 5310-00-283-0990

Item Description

A washer of any peripheral shape having a centrally located hole. Both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. The thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. The maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. Excludes washer, concave, retainer, packing, and thrust type washers. See also spacer, sleeve; and spacer, stepped.

NSN 5310-00-283-0990 NSN: 5310-00-283-0990

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Features and Characteristics

Hole Diameter
Between 4.005 inches and 4.015 inches
Outside Diameter
Between 4.609 inches and 4.641 inches
Overall Height
Between 0.186 inches and 0.187 inches
Recess Diameter
4.290 inches
Material Thickness
Between 0.186 inches and 0.187 inches
Recess Angle
Between 89.0 degrees and 91.0 degrees
Special Features
Three slots equally spaced on od 0.500 in. W 2.312 in. Dim from centerline to bottom of slots
Material
Steel comp 4140 or steel comp 4142 or steel comp 4145 or steel comp 4147 or steel comp 4150
Material Specification
Astm a322 assn standard all material responses or astm a331 assn standard all material responses
Style Designator
Recessed
FSC
5310 Nuts And Washers
NIIN
002830990
NSN
5310002830990

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
8691439
Cage Code:
19207
Status:
A
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 5310-00-283-0990
What are the manufacturers of nsn 5310002830990?
Does this nsn 5310002830990 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310002830990
A washer of any peripheral shape having a centrally located hole. both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. the thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. the maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. excludes washer, concave, retainer, packing, and thrust type washers. see also spacer, sleeve; and spacer, stepped.
Does nsn 5310002830990 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310002830990 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310002830990?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
15933
FIIG:
A022B0
App. Key:
A
Cond. Code:
1
Status:
A

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