5310-01-012-2049

Find complete technical information, availability, and procurement data for: 5310-01-012-2049
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-012-2049

Item Name Code

01869

Assigment Date

11/09/1975 (50 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.

0.247 inches minimum and 0.253 inches maximum external prebent key width, 0.230 inches minimum and 0.250 inches maximum external prebent key length, 3.140 inches minimum and 3.160 inches maximum outside diameter, 2.657 inches nominal hole diameter, feat criticality code justification

Product Characteristics

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

Hole Diameter: 2.657 inches nominal
Outside Diameter: 3.140 inches minimum and 3.160 inches maximum
External Prebent Key Length: 0.230 inches minimum and 0.250 inches maximum
External Prebent Key Width: 0.247 inches minimum and 0.253 inches maximum
Criticality Code Justification: feat
Special Features: intergal part of the rear gearbox housing. failure of this washer could result in degraded performance and/or failure of the weapon system operation.
Material: steel comp 1010 overall
Material Document And Classification: ams5040 assn std 1st material response or ams5042 assn std 2nd material response overall

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
742327	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-01-012-2049?

The FSCG of the NSN 5310-01-012-2049 is 5310

Does the NSN 5310-01-012-2049 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-01-012-2049 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 5310-01-012-2049 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-012-2049 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 5310-01-012-2049 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Sun, Nov 9, 1975