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Recessed Washer NSN 5310-01-339-6991

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 5310-01-339-6991 NSN: 5310-01-339-6991

Features and Characteristics

Hole Diameter
Between 1.010 inches and 1.015 inches
Outside Diameter
Between 1.4253 inches and 1.4255 inches
Material Thickness
Between 0.256 inches and 0.258 inches
Hardness Rating
58.0 rockwell c
Top Recess Diameter
Between 1.063 inches and 1.093 inches
Bottom Recess Angle
90.0 degrees
Top Recess Angle
90.0 degrees
Bottom Recess Diameter
Between 1.063 inches and 1.093 inches
Material
Steel comp e9310
Style Designator
Recessed both sides
FSC
5310 Nuts And Washers
NIIN
013396991
NSN
5310013396991

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
722752GC
Cage Code:
99167
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 5310-01-339-6991
What are the manufacturers of nsn 5310013396991?
Does this nsn 5310013396991 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310013396991
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 5310013396991 contain any precious metals?
No precious metal content.
Does nsn 5310013396991 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310013396991?
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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