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Recessed Washer NSN 5310-00-213-9281

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 5310-00-213-9281 NSN: 5310-00-213-9281

Features and Characteristics

Hole Diameter
Between 0.282 inches and 0.302 inches
Outside Diameter
Between 0.615 inches and 0.635 inches
Material Thickness
Between 0.045 inches and 0.055 inches
Top Recess Diameter
Between 0.302 inches and 0.322 inches
Bottom Recess Angle
45.0 degrees
Top Recess Angle
45.0 degrees
Bottom Recess Diameter
Between 0.302 inches and 0.322 inches
Material
Steel comp 303
Material Specification
Fed standard 66 federal standard single material response
Surface Treatment
Chromium
Style Designator
Recessed both sides
FSC
5310 Nuts And Washers
NIIN
002139281
NSN
5310002139281

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
1000083
Cage Code:
32274
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 5310-00-213-9281
What are the manufacturers of nsn 5310002139281?
Does this nsn 5310002139281 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310002139281
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 5310002139281 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310002139281 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310002139281?
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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