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Recessed Washer NSN 5310-00-849-7979

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 5310-00-849-7979 NSN: 5310-00-849-7979

Features and Characteristics

Hole Diameter
Between 0.501 inches and 0.512 inches
Outside Diameter
Between 0.950 inches and 0.970 inches
Recess Diameter
Between 0.614 inches and 0.634 inches
Material Thickness
Between 0.064 inches and 0.078 inches
Hardness Rating
Between 35.0 rockwell c and 40.0 rockwell c
Recess Angle
90.0 degrees
Material
Steel comp 4130 or steel comp 8630
Material Specification
Mil-s-18729 military specification 1st material response or mil-s-18728 military specification 2nd material response
Surface Treatment
Nickel and cadmium
Surface Treatment Specification
Ams 2416 assn standard single treatment response
Style Designator
15 recessed
Specification Data
81205-bacw10bn manufacturers standard
FSC
5310 Nuts And Washers
NIIN
008497979
NSN
5310008497979

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
BACW10BN8C
Cage Code:
77272
Status:
A
MSDS:
Part Number:
BACW10AKC8
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 5310-00-849-7979
What are the manufacturers of nsn 5310008497979?
Does this nsn 5310008497979 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310008497979
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 5310008497979 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310008497979 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310008497979?
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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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
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