5310-01-218-4557

Find complete technical information, availability, and procurement data for: 5310-01-218-4557
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-218-4557

Item Name Code

01869

Assigment Date

10/12/1985 (40 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.

0.084 inches minimum and 0.094 inches maximum external prebent key width, 0.105 inches minimum and 0.115 inches maximum internal prebent key width, 0.694 inches minimum and 0.704 inches maximum hole diameter, 0.074 inches minimum and 0.094 inches maximum internal prebent key length, 0.875 inches minimum and 0.895 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: 0.694 inches minimum and 0.704 inches maximum
Outside Diameter: 0.875 inches minimum and 0.895 inches maximum
Internal Prebent Key Length: 0.074 inches minimum and 0.094 inches maximum
External Prebent Key Width: 0.084 inches minimum and 0.094 inches maximum
Internal Prebent Key Width: 0.105 inches minimum and 0.115 inches maximum
Overall Distance Including Keys: 1.173 inches minimum and 1.203 inches maximum
External Key Quantity: 11
Internal Key Quantity: 2
Material Thickness: 0.029 inches minimum and 0.035 inches maximum
Material: steel comp 4130 overall
Material Document And Classification: ams 6350 assn std single material response overall
Surface Treatment: phosphate overall
Surface Treatment Document And Classification: ams 2481 assn std single treatment response overall
Style Designator: external and internal pre-bent keys

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
MS9081-13	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-01-218-4557?

The FSCG of the NSN 5310-01-218-4557 is 5310

Does the NSN 5310-01-218-4557 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-01-218-4557 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 5310-01-218-4557 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-218-4557 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 5310-01-218-4557 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Sat, Oct 12, 1985