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Recessed Washer NSN 5310-01-340-0188

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 5310-01-340-0188 NSN: 5310-01-340-0188

Features and Characteristics

Hole Diameter
Between 0.190 inches and 0.196 inches
Outside Diameter
Between 0.460 inches and 0.480 inches
Recess Diameter
0.350 inches
Material Thickness
Between 0.059 inches and 0.065 inches
Material
Aluminum alloy 6061
Material Specification
Qq-a-250/11 federal specification single material response
Surface Treatment
Chromate
Surface Treatment Specification
Mil-c-5541, cl 1a military specification single treatment response
Style Designator
15 recessed
FSC
5310 Nuts And Washers
NIIN
013400188
NSN
5310013400188

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
CA21062-10W
Cage Code:
29372
Status:
A
MSDS:
Part Number:
3M901-10W
Cage Code:
76301
Status:
A
MSDS:
Part Number:
10122214
Cage Code:
A486G
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7616108000
  • NAICS: 332722
  • SITC: 69440
  • Description: Cotters, cotter-pins, washers and similar articles, of aluminum
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-01-340-0188
What are the manufacturers of nsn 5310013400188?
Does this nsn 5310013400188 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310013400188
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 5310013400188 contain any precious metals?
No precious metal content.
Does nsn 5310013400188 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310013400188?
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
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