A78030-1

View detailed technical data, stock status, and sourcing information for: A78030-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-186-7497

Item Name Code

14218

Assigment Date

01/01/1963 (63 years ago)

A washer, usually round, with a centrally-located hole. Its edges and two bearing surfaces are designed in such a way that applied pressure brings into play the spring tension and/or frictional locking principle that materially resists any tendency toward turning. It may be made of one or two pieces.

cadmium overall surface treatment, 0.047 inches nominal material thickness, 0.255 inches minimum and 0.267 inches maximum hole diameter, 0.469 inches nominal outside diameter, steel overall material

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Hole Diameter: 0.255 inches minimum and 0.267 inches maximum
Outside Diameter: 0.469 inches nominal
Material Thickness: 0.047 inches nominal
Material: steel overall
Surface Treatment: cadmium overall
Style Designator: split helical-right hand

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-596-6657	No Name Available	04/01/2008

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
304T437	Lock Washer
530-16SCP	Lock Washer
5310PL0890273	Lock Washer
A78030-1	Lock Washer
LW0-16SCP	Lock Washer

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-00-186-7497?

The FSCG of the NSN 5310-00-186-7497 is 5310

Does the NSN 5310-00-186-7497 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-00-186-7497 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 5310-00-186-7497 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-186-7497 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 5310-00-186-7497 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963