5310-00-184-8978

Find complete technical information, availability, and procurement data for: 5310-00-184-8978
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-184-8978

Item Name Code

14218

Assigment Date

01/01/1963 (63 years ago)

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.

copper alloy overall material, 0.141 inches minimum and 0.151 inches maximum hole diameter, 0.025 inches minimum and 0.031 inches maximum material thickness, 0.239 inches nominal outside diameter, dyed deep yellow special features

Product Characteristics

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

Hole Diameter: 0.141 inches minimum and 0.151 inches maximum
Outside Diameter: 0.239 inches nominal
Material Thickness: 0.025 inches minimum and 0.031 inches maximum
Special Features: dyed deep yellow
Material: copper alloy overall
Surface Treatment: cadmium and chromate overall
Style Designator: split helical-right hand
Departure From Cited Designator: as modified by material spec

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
12Z22PC273	Lock Washer
310-0078-000	Lock Washer
6026-1085-6	Lock Washer
900873-05	Lock Washer
AN935B6L	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-184-8978?

The FSCG of the NSN 5310-00-184-8978 is 5310

Does the NSN 5310-00-184-8978 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-00-184-8978 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 5310-00-184-8978 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-184-8978 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 5310-00-184-8978 was assigned to the Federal Catalog?

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