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Recessed Washer NSN 5310-01-381-3877

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 5310-01-381-3877 NSN: 5310-01-381-3877

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Features and Characteristics

Hole Diameter
Between 0.153 inches and 0.159 inches
Outside Diameter
Between 0.279 inches and 0.283 inches
Overall Height
0.060 inches
Recess Diameter
Between 0.245 inches and 0.255 inches
Recess Depth
0.030 inches
Hardness Rating
Between 26.0 rockwell c and 32.0 rockwell c
Material
Steel comp 416
Material Specification
Astm a581 assn standard single material response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Style Designator
Recessed
FSC
5310 Nuts And Washers
NIIN
013813877
NSN
5310013813877

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
676-8937-001
Cage Code:
13499
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 5310-01-381-3877
What are the manufacturers of nsn 5310013813877?
Does this nsn 5310013813877 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310013813877
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 5310013813877 contain any precious metals?
No precious metal content.
Does nsn 5310013813877 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310013813877?
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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