5310-01-286-7881

Find complete technical information, availability, and procurement data for: 5310-01-286-7881
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-286-7881

Item Name Code

15930

Assigment Date

10/08/1988 (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.

0.688 inches nominal hole diameter, 0.200 inches nominal material thickness, 3.820 inches nominal radius, 0.010 inches nominal recess depth, 1.600 inches nominal outside diameter

Product Characteristics

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

Hole Diameter: 0.688 inches nominal
Radius: 3.820 inches nominal
Outside Diameter: 1.600 inches nominal
Recess Depth: 0.010 inches nominal
Material Thickness: 0.200 inches nominal
Surface Finish: 32.0 microinches bottom
Special Features: prime concave surface only; use ec3917
Material: titanium alloy overall
Style Designator: concave

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
65155-00125-102	Concave Washer

FAQs

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

What is the FSCG of the NSN 5310-01-286-7881?

The FSCG of the NSN 5310-01-286-7881 is 5310

Does the NSN 5310-01-286-7881 have a Schedule B code assigned?

Yes, the Schedule B code is 8108908000

Does NSN 5310-01-286-7881 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 5310-01-286-7881 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-286-7881 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 5310-01-286-7881 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Sat, Oct 8, 1988