5310-00-261-7162

Find complete technical information, availability, and procurement data for: 5310-00-261-7162
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-261-7162

Item Name Code

14218

Assigment Date

01/01/1963 (63 years ago)

A washer, usually round, with a centrally-located hole. Its edges and two bearing surfaces are designed in such a way that applied pressure brings into play the spring tension and/or frictional locking principle that materially resists any tendency toward turning. It may be made of one or two pieces.

0.195 inches minimum and 0.205 inches maximum hole diameter, 0.020 inches minimum and 0.025 inches maximum material thickness, a4 bradley fighting vehicle end item identification, 40.0 rockwell c minimum and 50.0 rockwell c maximum hardness rating, 0.354 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: 0.195 inches minimum and 0.205 inches maximum
Outside Diameter: 0.354 inches nominal
Material Thickness: 0.020 inches minimum and 0.025 inches maximum
End Item Identification: a4 bradley fighting vehicle
Hardness Rating: 40.0 rockwell c minimum and 50.0 rockwell c maximum
Countersink Angle: 80.0 degrees minimum and 82.0 degrees maximum
Material: steel comp 410 overall
Material Document And Classification: 66 fed std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35,ty 2.or ty 3 fed spec single treatment response overall
Style Designator: countersink external teeth

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-297-3743	Lock Washer	07/01/2025

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
12Z3001-5	Lock Washer
5310002617162	Lock Washer
5401-101	Lock Washer
MS35336-23	Lock Washer
T0550	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-261-7162?

The FSCG of the NSN 5310-00-261-7162 is 5310

Does the NSN 5310-00-261-7162 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-00-261-7162 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 5310-00-261-7162 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-261-7162 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 5310-00-261-7162 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963