131A190

View detailed technical data, stock status, and sourcing information for: 131A190
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-284-1416

Item Name Code

13393

Assigment Date

08/18/1988 (38 years ago)

A washer having a centrally located hole and two flat bearing surfaces which are not parallel.

0.031 inches nominal thickness, round peripheral shape style, round center hole shape style, rectangular cross-sectional shape style, 3.125 inches nominal hole diameter

Product Characteristics

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

Cross-Sectional Shape Style: rectangular
Hole Diameter: 3.125 inches nominal
Peripheral Shape Style: round
Center Hole Shape Style: round
Thickness: 0.031 inches nominal
Overall Diameter: 0.500 inches nominal
Criticality Code Justification: zzzy
Material: plastic polyhexamethylene adipamide overall
Material Document And Classification: astm d4066,group 1,cl 1,grade 2,3 or 4 assn std single material response overall
Special Test Features: special quality control testing
Test Data Document: "81349-mil-p-23199 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
Departure From Cited Document: as modified by material
Reference Number Differentiating Characteristics: as differentiated by material which must conform to ships parts control center special quality control provisions

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
131A190	Flat Washer
LL-HQ5-8637	Flat Washer

FAQs

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

What is the FSCG of the NSN 5310-01-284-1416?

The FSCG of the NSN 5310-01-284-1416 is 5310

Does the NSN 5310-01-284-1416 have a Schedule B code assigned?

Yes, the Schedule B code is 3926904500

Does NSN 5310-01-284-1416 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 5310-01-284-1416 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-284-1416 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 5310-01-284-1416 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Thu, Aug 18, 1988