5310-01-187-3921

Find complete technical information, availability, and procurement data for: 5310-01-187-3921
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-187-3921

Item Name Code

01869

Assigment Date

08/22/1984 (42 years ago)

A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes:thrust type washer.

0.366 inches minimum and 0.372 inches maximum internal straight key width, 2 internal key quantity, 1.865 inches minimum and 1.870 inches maximum distance from centerline to top of internal key, 4.150 inches nominal hole diameter, 5.000 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: 4.150 inches nominal
Outside Diameter: 5.000 inches nominal
Internal Straight Key Width: 0.366 inches minimum and 0.372 inches maximum
Distance From Centerline To Top Of Internal Key: 1.865 inches minimum and 1.870 inches maximum
Internal Key Quantity: 2
Material Thickness: 0.562 inches nominal
Surface Finish: 125.0 microinches all surfaces
Special Features: 6 keyways equally spaced on outeredge 0.440 in. wide,0.350 in. deep
Material: steel comp 4340 overall
Material Document And Classification: mil-s-8844,class 1 mil spec single material response overall
Surface Treatment: cadmium and chromium overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 1 fed spec 1st treatment response and qq-c-320,class 2 fed spec 2nd treatment 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
1881B153	Key Washer

FAQs

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

What is the FSCG of the NSN 5310-01-187-3921?

The FSCG of the NSN 5310-01-187-3921 is 5310

Does the NSN 5310-01-187-3921 have a Schedule B code assigned?

Yes, the Schedule B code is 7318220000

Does NSN 5310-01-187-3921 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 5310-01-187-3921 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-187-3921 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 5310-01-187-3921 was assigned to the Federal Catalog?

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