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Key Washer NSN 5310-01-187-3921

Item Description

A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes thrust type washer.

NSN 5310-01-187-3921 NSN: 5310-01-187-3921

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Features and Characteristics

Hole Diameter
4.150 inches
Outside Diameter
5.000 inches
Internal Straight Key Width
Between 0.366 inches and 0.372 inches
Distance From Centerline To Top Of Internal Key
Between 1.865 inches and 1.870 inches
Internal Key Quantity
2
Material Thickness
0.562 inches
Surface Finish
125.0 microinches all surfaces
Special Features
6 keyways equally spaced on outeredge 0.440 in. Wide, 0.350 in. Deep
Material
Steel comp 4340
Material Specification
Mil-s-8844, class 1 military specification single material response
Surface Treatment
Cadmium and chromium
Surface Treatment Specification
Qq-p-416, type 2, class 1 federal specification 1st treatment response and qq-c-320, class 2 federal specification 2nd treatment response
Style Designator
Key
FSC
5310 Nuts And Washers
NIIN
011873921
NSN
5310011873921

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
1881B153
Cage Code:
13002
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 5310-01-187-3921
What are the manufacturers of nsn 5310011873921?
Does this nsn 5310011873921 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310011873921
A washer of nonresilient material usually having two parallel bearing surfaces. the outside and/or inside edges have one or more protuberances. the ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. the keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. excludes thrust type washer.
Does nsn 5310011873921 contain any precious metals?
No precious metal content.
Does nsn 5310011873921 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310011873921?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
01869
FIIG:
A022B0
App. Key:
A
Cond. Code:
1
Status:
A

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