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Recessed Washer NSN 5310-00-087-3057

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 5310-00-087-3057 NSN: 5310-00-087-3057

Features and Characteristics

Hole Diameter
Between 0.438 inches and 0.443 inches
Outside Diameter
0.562 inches
Recess Diameter
Between 0.478 inches and 0.483 inches
Material Thickness
0.031 inches
Recess Angle
90.0 degrees
Color
Black
Material
Steel comp 302
Material Specification
Qq-s-763 cond a federal specification single material response
Surface Treatment
Oxide film
Surface Treatment Specification
171 finish 3.3.2 military standard single treatment response
Style Designator
Recessed
FSC
5310 Nuts And Washers
NIIN
000873057
NSN
5310000873057

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
SCB614660
Cage Code:
80063
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 5310-00-087-3057
What are the manufacturers of nsn 5310000873057?
Does this nsn 5310000873057 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310000873057
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 5310000873057 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310000873057 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310000873057?
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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