5310-01-187-3923

Find complete technical information, availability, and procurement data for: 5310-01-187-3923
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-187-3923

Item Name Code

01869

Assigment Date

08/22/1984 (42 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.

0.132 inches minimum and 0.142 inches maximum material thickness, 1.005 inches minimum and 1.010 inches maximum hole diameter, 0.090 inches nominal wire hole diameter, 1.270 inches nominal outside diameter, 0.240 inches minimum and 0.245 inches maximum internal prebent key width

Product Characteristics

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

Hole Diameter: 1.005 inches minimum and 1.010 inches maximum
Outside Diameter: 1.270 inches nominal
Internal Prebent Key Width: 0.240 inches minimum and 0.245 inches maximum
Material Thickness: 0.132 inches minimum and 0.142 inches maximum
Wire Hole Diameter: 0.090 inches nominal
Surface Finish: 125.0 microinches all surfaces
Special Features: second internal key opposite first same size
Material: aluminum and nickel and copper alloy overall
Material Document And Classification: ams4640 assn std single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,type 1,class 3 fed spec single treatment response overall
Style Designator: internal prebent 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
1881-252	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-01-187-3923?

The FSCG of the NSN 5310-01-187-3923 is 5310

Does the NSN 5310-01-187-3923 have a Schedule B code assigned?

Yes, the Schedule B code is 7419805500

Does NSN 5310-01-187-3923 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 5310-01-187-3923 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-187-3923 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 5310-01-187-3923 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Wed, Aug 22, 1984