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Recessed Washer NSN 5310-01-008-6798

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 5310-01-008-6798 NSN: 5310-01-008-6798

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Features and Characteristics

Hole Diameter
Between 0.251 inches and 0.255 inches
Outside Diameter
Between 0.481 inches and 0.491 inches
Recess Diameter
Between 0.340 inches and 0.350 inches
Material Thickness
Between 0.067 inches and 0.069 inches
Hardness Rating
Between 39.0 rockwell c and 45.0 rockwell c
Recess Angle
90.0 degrees
Material
Steel comp 4130
Material Specification
Mil-s-6758 military specification single material response or mil-s-18729 military specification single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification single treatment response
Style Designator
15 recessed
FSC
5310 Nuts And Washers
NIIN
010086798
NSN
5310010086798

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
MS21299-C4
Cage Code:
D9182
Status:
A
MSDS:
Part Number:
MS21299C4
Cage Code:
80205
Status:
A
MSDS:
Part Number:
721009663900
Cage Code:
A1140
Status:
A
MSDS:
Part Number:
10121940
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 5310-01-008-6798
What are the manufacturers of nsn 5310010086798?
Does this nsn 5310010086798 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310010086798
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 5310010086798 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310010086798 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310010086798?
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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