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Recessed Washer NSN 5310-01-164-6371

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 5310-01-164-6371 NSN: 5310-01-164-6371

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Features and Characteristics

Hole Diameter
Between 0.390 inches and 0.400 inches
Outside Diameter
Between 0.618 inches and 0.643 inches
Material Thickness
Between 0.047 inches and 0.055 inches
Hardness Rating
Between 65.0 rockwell b and 105.0 rockwell b
Top Recess Diameter
Between 0.427 inches and 0.447 inches
Bottom Recess Angle
90.0 degrees
Top Recess Angle
90.0 degrees
Bottom Recess Diameter
Between 0.427 inches and 0.447 inches
Material
Steel comp 302 or steel comp 303 or steel comp 304
Material Specification
Ams 5515 assn standard 1st material response or astm a582, cond a assn standard 2nd material response or ams 5513 assn standard 3rd material response
Style Designator
Recessed both sides
FSC
5310 Nuts And Washers
NIIN
011646371
NSN
5310011646371

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
69456A23
Cage Code:
73030
Status:
A
MSDS:
Part Number:
10109914
Cage Code:
A486G
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 5310-01-164-6371
What are the manufacturers of nsn 5310011646371?
Does this nsn 5310011646371 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310011646371
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 5310011646371 contain any precious metals?
No precious metal content.
Does nsn 5310011646371 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310011646371?
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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