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Recessed Washer NSN 5310-01-092-1257

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 5310-01-092-1257 NSN: 5310-01-092-1257

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Features and Characteristics

Hole Diameter
Between 0.627 inches and 0.631 inches
Outside Diameter
Between 1.256 inches and 1.266 inches
Material Thickness
Between 0.212 inches and 0.226 inches
Hardness Rating
Between 38.0 rockwell c and 43.0 rockwell c
Top Recess Diameter
Between 0.775 inches and 0.785 inches
Bottom Recess Angle
90.0 degrees
Top Recess Angle
90.0 degrees
Bottom Recess Diameter
Between 0.775 inches and 0.785 inches
Material
Steel comp 4130
Material Specification
Mil-s-6758 military specification single material response or mil-s-18729 military specification single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification single treatment response
Style Designator
Recessed both sides
FSC
5310 Nuts And Washers
NIIN
010921257
NSN
5310010921257

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
MS14155-10
Cage Code:
80205
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 5310-01-092-1257
What are the manufacturers of nsn 5310010921257?
Does this nsn 5310010921257 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310010921257
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 5310010921257 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310010921257 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310010921257?
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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