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5310-01-178-1938

Lock Washer

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Official Item Classification

Name
Lock Washer
(NSN) National Stock Number
5310-01-178-1938
(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
05/02/1984 (42 years ago)

steel overall material, 0.334 inches maximum outside diameter, 45.0 rockwell c minimum and 53.0 rockwell c maximum hardness rating, 0.194 inches minimum hole diameter, 0.047 inches minimum material thickness

Specs & Compatibility

Hole Diameter

0.194 inches minimum

Outside Diameter

0.334 inches maximum

Material Thickness

0.047 inches minimum

Hardness Rating

45.0 rockwell c minimum and 53.0 rockwell c maximum

Material

steel 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
81309756 Lock Washer
91100007 Lock Washer
91100007N Lock Washer

Frequently Asked Questions

What is the FSCG of the NSN 5310-01-178-1938?
The FSCG of the NSN 5310-01-178-1938 is 5310
Does the NSN 5310-01-178-1938 have a Schedule B code assigned?
Yes, the Schedule B code is 7318210000
Does NSN 5310-01-178-1938 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 5310-01-178-1938 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-01-178-1938 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 5310-01-178-1938 was assigned to the Federal Catalog?
It was assigned 42 years ago, on Wed, May 2, 1984