4056366

View detailed technical data, stock status, and sourcing information for: 4056366
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-125-1221

Item Name Code

01869

Assigment Date

01/22/1982 (44 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.

0.390 inches minimum and 0.400 inches maximum distance from centerline to inside of prebent key, 0.100 inches minimum and 0.110 inches maximum external prebent key length, 0.216 inches minimum and 0.226 inches maximum hole diameter, 0.110 inches minimum and 0.115 inches maximum external prebent key width, 0.620 inches minimum and 0.640 inches maximum 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: 0.216 inches minimum and 0.226 inches maximum
Outside Diameter: 0.620 inches minimum and 0.640 inches maximum
External Prebent Key Length: 0.100 inches minimum and 0.110 inches maximum
External Prebent Key Width: 0.110 inches minimum and 0.115 inches maximum
Distance From Centerline To Inside Of Prebent Key: 0.390 inches minimum and 0.400 inches maximum
Overall Distance Including Keys: 0.728 inches nominal
Material Thickness: 0.015 inches minimum and 0.020 inches maximum
Material: nickel alloy overall
Material Document And Classification: ams5540 assn std single material response overall
Style Designator: key

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
4056366	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-01-125-1221?

The FSCG of the NSN 5310-01-125-1221 is 5310

Does the NSN 5310-01-125-1221 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5310-01-125-1221 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 5310-01-125-1221 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-125-1221 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 5310-01-125-1221 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Fri, Jan 22, 1982