X7-3

View detailed technical data, stock status, and sourcing information for: X7-3
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-032-1973

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.

ams 4510 assn std single material response overall material document and classification, 0.101 inches minimum and 0.111 inches maximum hole diameter, 0.026 inches minimum and 0.036 inches maximum material thickness, 0.163 inches minimum and 0.173 inches maximum outside diameter, copper alloy overall material

Product Characteristics

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

Hole Diameter: 0.101 inches minimum and 0.111 inches maximum
Outside Diameter: 0.163 inches minimum and 0.173 inches maximum
Material Thickness: 0.026 inches minimum and 0.036 inches maximum
Material: copper alloy overall
Material Document And Classification: ams 4510 assn std single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 2 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Below is a list of NSNs that have been officially superseded by this NSN: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
5310-00-025-8077	No Name Available	05/27/1978
5310-00-215-8350	No Name Available	07/12/1980
5310-00-443-2732	No Name Available	05/04/1982
5310-00-827-4068	No Name Available	11/01/1982
5310-00-840-9191	No Name Available	11/24/2003

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
140859	Lock Washer
X7-3	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-032-1973?

The FSCG of the NSN 5310-00-032-1973 is 5310

Does the NSN 5310-00-032-1973 have a Schedule B code assigned?

Yes, the Schedule B code is 7415210000

Does NSN 5310-00-032-1973 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 5310-00-032-1973 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-032-1973 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 5310-00-032-1973 was assigned to the Federal Catalog?

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