X7-6

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-184-8977

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.

0.250 inches maximum outside diameter, 90.0 rockwell b minimum hardness rating, mrap rg-31; medium mine protected vehicle - mmpv; multiple launch rocket system (mlrs) end item identification, 0.141 inches minimum and 0.148 inches maximum hole diameter, 0.031 inches minimum and 0.037 inches maximum material thickness

Product Characteristics

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

Hole Diameter: 0.141 inches minimum and 0.148 inches maximum
Outside Diameter: 0.250 inches maximum
Material Thickness: 0.031 inches minimum and 0.037 inches maximum
End Item Identification: mrap rg-31; medium mine protected vehicle - mmpv; multiple launch rocket system (mlrs)
Hardness Rating: 90.0 rockwell b minimum
Material: copper alloy overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Style Designator: split helical-right hand

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-209-4380	No Name Available	05/14/1979
5310-00-282-9113	No Name Available	07/02/1979
5310-00-364-6975	No Name Available	10/12/1970
5310-00-402-5831	No Name Available	03/19/1971
5310-00-726-4350	No Name Available	02/01/1978
5310-00-808-1572	No Name Available	11/25/2003
5305-00-889-7191	No Name Available	01/01/1960
5310-01-316-2459	No Name Available	09/04/1991
5310-01-335-2949	No Name Available	08/01/1998

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
10116638	Lock Washer
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12Z22-273	Lock Washer
1537351-6	Lock Washer
177013-11	Lock Washer
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2151100035	Lock Washer
43W4740-30	Lock Washer
5288749-6	Lock Washer
5310001848977	Lock Washer
62102140	Lock Washer
820600G53A1	Lock Washer
A14-813	Lock Washer
AN935B6	Lock Washer
E20476	Lock Washer
HK799P06M	Lock Washer
MB35338-90	Lock Washer
MS16214-19	Lock Washer
MS35338-98	Lock Washer
N407P37C15	Lock Washer
X7-6	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-184-8977?

The FSCG of the NSN 5310-00-184-8977 is 5310

Does the NSN 5310-00-184-8977 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-00-184-8977 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 5310-00-184-8977 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-184-8977 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 5310-00-184-8977 was assigned to the Federal Catalog?

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