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Recessed Washer NSN 5310-00-531-8830

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 5310-00-531-8830 NSN: 5310-00-531-8830

Features and Characteristics

Hole Diameter
Between 1.640 inches and 1.660 inches
Outside Diameter
Between 2.290 inches and 2.310 inches
Recess Diameter
Between 1.820 inches and 1.840 inches
Material Thickness
0.125 inches
Recess Angle
Between 89.0 degrees and 91.0 degrees
Heat Treatment
Normalized
Material
Steel comp 4130
Material Specification
Mil-t-6736 military specification single material response or mil-s-6758 military specification single material response
Surface Treatment
Cadmium
Style Designator
Recessed
FSC
5310 Nuts And Washers
NIIN
005318830
NSN
5310005318830

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
30-2507
Cage Code:
81205
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 5310-00-531-8830
What are the manufacturers of nsn 5310005318830?
Does this nsn 5310005318830 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310005318830
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 5310005318830 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310005318830 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310005318830?
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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