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Key Washer NSN 5310-00-257-5850

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 5310-00-257-5850 NSN: 5310-00-257-5850

Features and Characteristics

Hole Diameter
Between 0.470 inches and 0.480 inches
Outside Diameter
Between 0.703 inches and 0.735 inches
External Prebent Key Length
Between 0.045 inches and 0.055 inches
External Prebent Key Width
Between 0.105 inches and 0.115 inches
Internal Straight Key Width
Between 0.059 inches and 0.065 inches
Distance From Centerline To Top Of Internal Key
Between 0.216 inches and 0.220 inches
Distance From Centerline To Inside Of Prebent Key
Between 0.349 inches and 0.359 inches
Overall Distance Including Keys
Between 0.748 inches and 0.755 inches
Material Thickness
0.038 inches
Hardness Rating
Between 33.0 rockwell c and 37.0 rockwell c
Part Name Assigned By Controlling Agency
Navy special project
Special Features
Internal key 135 degrees from prebent key
Material
Steel comp 4130
Material Specification
Mil-s-18729 military specification single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Mil-c-8837, type 2 class 1 military specification single treatment response
Style Designator
Key
FSC
5310 Nuts And Washers
NIIN
002575850
NSN
5310002575850

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
A51G20121-14
Cage Code:
61174
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 5310-00-257-5850
What are the manufacturers of nsn 5310002575850?
Does this nsn 5310002575850 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310002575850
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 5310002575850 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310002575850 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310002575850?
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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  •   Certificate of Conformance
  •   Quality Inspected Parts
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