5310-00-943-5378

Find complete technical information, availability, and procurement data for: 5310-00-943-5378
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-943-5378

Item Name Code

01854

Assigment Date

01/28/1966 (60 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.

castellated, hexagon nut style, 1.937 inches minimum and 2.002 inches maximum width across flats, 0.656 inches nominal nut height, 3b thread class, right-hand thread direction

Product Characteristics

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

Thread Class: 3b
Thread Direction: right-hand
Nut Style: castellated, hexagon
Nut Height: 0.656 inches nominal
Width Across Flats: 1.937 inches minimum and 2.002 inches maximum
Thread Series: un
Thread Quantity Per Inch: 16
Hardness Rating: 26.0 rockwell c minimum and 33.0 rockwell c maximum
Nominal Thread Size: 1.312 inches
Bearing Surface Type: washer faced
Material: steel comp 4130 or steel comp 4340 overall
Material Document And Classification: mil-s-6758 mil spec 1st material response or mil-s-5000 mil spec 2nd material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment 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
MCM320-2116	Nut,plain,castellated,hexagon

FAQs

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

What is the FSCG of the NSN 5310-00-943-5378?

The FSCG of the NSN 5310-00-943-5378 is 5310

Does the NSN 5310-00-943-5378 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-943-5378 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 5310-00-943-5378 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-943-5378 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 5310-00-943-5378 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, Jan 28, 1966