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Recessed Washer NSN 5310-00-900-3368

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 5310-00-900-3368 NSN: 5310-00-900-3368

Features and Characteristics

Hole Diameter
Between 0.505 inches and 0.510 inches
Outside Diameter
Between 1.240 inches and 1.260 inches
Material Thickness
Between 0.177 inches and 0.180 inches
Min. Tensile Strength (psi)
150000 pounds per square inch
Hardness Rating
Between 34.0 rockwell c and 38.0 rockwell c
Top Recess Diameter
Between 0.604 inches and 0.620 inches
Bottom Recess Angle
90.0 degrees
Top Recess Angle
90.0 degrees
Criticality Code Justification
Feat
Bottom Recess Diameter
Between 0.604 inches and 0.620 inches
Surface Finish
100.0 microinches all surfaces
Special Features
Extereme outer edges ofboth bearing surfaces rounded
Material
Steel
Material Specification
Mil-s-5000 military specification single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416 federal specification single treatment response
Style Designator
Recessed both sides
FSC
5310 Nuts And Washers
NIIN
009003368
NSN
5310009003368

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
6435-20179-101
Cage Code:
78286
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 5310-00-900-3368
What are the manufacturers of nsn 5310009003368?
Does this nsn 5310009003368 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310009003368
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 5310009003368 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310009003368 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310009003368?
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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