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Recessed Washer NSN 5310-00-613-4940

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 5310-00-613-4940 NSN: 5310-00-613-4940

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Features and Characteristics

Hole Diameter
Between 2.750 inches and 2.760 inches
Outside Diameter
4.094 inches
Recess Diameter
Between 2.937 inches and 2.947 inches
Material Thickness
0.125 inches
Recess Angle
90.0 degrees
Material
Aluminum alloy
Material Specification
Qq-c-390 federal specification single material response
Style Designator
Recessed
FSC
5310 Nuts And Washers
NIIN
006134940
NSN
5310006134940

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
2660566
Cage Code:
88277
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7616108000
  • NAICS: 332722
  • SITC: 69440
  • Description: Cotters, cotter-pins, washers and similar articles, of aluminum
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-00-613-4940
What are the manufacturers of nsn 5310006134940?
Does this nsn 5310006134940 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310006134940
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 5310006134940 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310006134940 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310006134940?
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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