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Recessed Washer NSN 5310-00-066-9409

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 5310-00-066-9409 NSN: 5310-00-066-9409

Features and Characteristics

Hole Diameter
Between 1.250 inches and 1.310 inches
Outside Diameter
Between 3.970 inches and 4.030 inches
Material Thickness
Between 0.520 inches and 0.580 inches
Top Recess Diameter
1.375 inches
Bottom Recess Angle
90.0 degrees
Top Recess Angle
90.0 degrees
Bottom Recess Diameter
1.375 inches
Heat Treatment
As fabricated
Material
Aluminum alloy
Surface Treatment
Oxide film
Surface Treatment Specification
Mil-std-171 military standard single treatment response
Style Designator
Recessed both sides
FSC
5310 Nuts And Washers
NIIN
000669409
NSN
5310000669409

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
135B6130
Cage Code:
05606
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 5310-00-066-9409
What are the manufacturers of nsn 5310000669409?
Does this nsn 5310000669409 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310000669409
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 5310000669409 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310000669409 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310000669409?
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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