NAS1443-19

View detailed technical data, stock status, and sourcing information for: NAS1443-19
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-291-4014

Item Name Code

01869

Assigment Date

12/28/1988 (37 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.

4.072 inches minimum and 4.077 inches maximum overall distance including keys, 3.502 inches minimum and 3.522 inches maximum hole diameter, 3.990 inches minimum and 4.010 inches maximum outside diameter, 0.355 inches minimum and 0.375 inches maximum external prebent key width, 6 external key quantity

Product Characteristics

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

Hole Diameter: 3.502 inches minimum and 3.522 inches maximum
Outside Diameter: 3.990 inches minimum and 4.010 inches maximum
External Prebent Key Width: 0.355 inches minimum and 0.375 inches maximum
Overall Distance Including Keys: 4.072 inches minimum and 4.077 inches maximum
External Key Quantity: 6
Material Thickness: 0.040 inches minimum and 0.060 inches maximum
Hardness Rating: 34.0 rockwell c minimum and 38.0 rockwell c maximum
Material: steel comp 1050 overall
Material Document And Classification: ams 5085 assn std single material response overall
Surface Treatment: oxide overall
Surface Treatment Document And Classification: mil-c-13924 cl 1 mil spec single treatment response overall
Specification/Standard Data: 80205-nas1443 professional/industrial association standard

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
NAS1443-19	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-01-291-4014?

The FSCG of the NSN 5310-01-291-4014 is 5310

Does the NSN 5310-01-291-4014 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-01-291-4014 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 5310-01-291-4014 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-291-4014 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 5310-01-291-4014 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Wed, Dec 28, 1988