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Recessed Washer NSN 5310-01-176-7021

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 5310-01-176-7021 NSN: 5310-01-176-7021

Features and Characteristics

Hole Diameter
Between 0.627 inches and 0.631 inches
Outside Diameter
Between 1.052 inches and 1.072 inches
Recess Diameter
Between 0.778 inches and 0.788 inches
Material Thickness
Between 0.071 inches and 0.085 inches
Recess Angle
90.0 degrees
Special Features
Heat treatment, 260, 000 psi min
Material
Cobalt alloy
Material Specification
Ams 5758 assn standard single material response or ams 5844 assn standard single material response
Style Designator
15 recessed
FSC
5310 Nuts And Washers
NIIN
011767021
NSN
5310011767021

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
HS4134C10
Cage Code:
8V613
Status:
A
MSDS:
Part Number:
757086-10
Cage Code:
56878
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8105900000
  • NAICS: 331491
  • SITC: 69981
  • Description: Cobalt, wrought, and articles thereof
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-01-176-7021
What are the manufacturers of nsn 5310011767021?
Does this nsn 5310011767021 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310011767021
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 5310011767021 contain any precious metals?
No precious metal content.
Does nsn 5310011767021 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310011767021?
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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