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Recessed Washer NSN 5310-01-121-5538

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 5310-01-121-5538 NSN: 5310-01-121-5538

Features and Characteristics

Hole Diameter
3.150 inches
Outside Diameter
Between 3.152 inches and 3.157 inches
Overall Height
Between 0.360 inches and 0.390 inches
Material Thickness
0.030 inches
Material
Steel
Material Specification
Aisi assn standard single material response
Style Designator
Recessed
FSC
5310 Nuts And Washers
NIIN
011215538
NSN
5310011215538

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
N-4512
Cage Code:
01212
Status:
A
MSDS:
Part Number:
234999
Cage Code:
77237
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 5310-01-121-5538
What are the manufacturers of nsn 5310011215538?
Does this nsn 5310011215538 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310011215538
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 5310011215538 contain any precious metals?
No precious metal content.
Does nsn 5310011215538 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310011215538?
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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  •   Certificate of Conformance
  •   Quality Inspected Parts
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