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Recessed Washer NSN 5310-00-104-6640

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 5310-00-104-6640 NSN: 5310-00-104-6640

Features and Characteristics

Hole Diameter
Between 1.265 inches and 1.285 inches
Outside Diameter
2.188 inches
Recess Diameter
Between 1.425 inches and 1.445 inches
Material Thickness
Between 0.178 inches and 0.198 inches
Hardness Rating
Between 34.0 rockwell c and 39.0 rockwell c
Recess Angle
45.0 degrees
Heat Treatment
As fabricated
Material
Steel
Material Specification
Ams6415, e4340, condition cold drawn mfr ref single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
Style Designator
Recessed
FSC
5310 Nuts And Washers
NIIN
001046640
NSN
5310001046640

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
10231183
Cage Code:
18876
Status:
A
MSDS:
Part Number:
5310001046640
Cage Code:
A00AM
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 5310-00-104-6640
What are the manufacturers of nsn 5310001046640?
Does this nsn 5310001046640 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310001046640
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 5310001046640 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310001046640 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310001046640?
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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