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5310-01-285-8720

Lock Washer

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Featured Parts

1000-15ST
5325-00-285-6688
Retaining Ring
1000-15STCD
5325-00-200-7377
Retaining Ring
1000-16
5940-00-238-9315
Electrical Binding Post
1000-1608-001
5940-01-352-6299
Insulated Terminal
1000-16164
5305-00-934-0279
Hexagon Head Cap Screw
1000-16925-33
4710-01-568-3628
Metal Pipe Assembly
1000-16926-33
4720-01-568-3975
Nonmetallic Tubing Assembly
1000-16927-33
4720-01-568-2708
Nonmetallic Tubing Assembly

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Official Item Classification

Name
Lock Washer
(NSN) National Stock Number
5310-01-285-8720
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5310 Nuts and Washers
(INC) Item Name Code
14218
(FIIG) Federal Item Identification Guide
A022B0
Date
09/22/1988 (38 years ago)

45.0 rockwell c minimum and 53.0 rockwell c maximum hardness rating, 0.495 inches maximum outside diameter, 0.077 inches minimum and 0.087 inches maximum material thickness, steel overall material, 0.255 inches minimum and 0.267 inches maximum hole diameter

Specs & Compatibility

Hole Diameter

0.255 inches minimum and 0.267 inches maximum

Outside Diameter

0.495 inches maximum

Material Thickness

0.077 inches minimum and 0.087 inches maximum

Hardness Rating

45.0 rockwell c minimum and 53.0 rockwell c maximum

Material

steel overall

Material Document And Classification

qq-s-633 fs1060-fs1080 fed spec single material response overall

Surface Treatment

cadmium and chromate overall

Surface Treatment Document And Classification

qq-p-416 ty2 cl3 fed spec 1st treatment response overall

Style Designator

split helical-right hand

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0014218

Related Hardware Products

Part Number Description
310-0693-000 Lock Washer
P310-0693-000 Lock Washer

Frequently Asked Questions

What is the FSCG of the NSN 5310-01-285-8720?
The FSCG of the NSN 5310-01-285-8720 is 5310
Does the NSN 5310-01-285-8720 have a Schedule B code assigned?
Yes, the Schedule B code is 7318210000
Does NSN 5310-01-285-8720 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5310-01-285-8720 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-01-285-8720 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5310-01-285-8720 was assigned to the Federal Catalog?
It was assigned 38 years ago, on Thu, Sep 22, 1988