Y1-971

View detailed technical data, stock status, and sourcing information for: Y1-971
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-018-5476

Item Name Code

14218

Assigment Date

03/29/1976 (50 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.

0.059 inches minimum and 0.067 inches maximum material thickness, 1.921 inches minimum and 1.975 inches maximum outside diameter, steel overall material, flat internal teeth style designator, 1.275 inches minimum and 1.325 inches maximum hole 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: 1.275 inches minimum and 1.325 inches maximum
Outside Diameter: 1.921 inches minimum and 1.975 inches maximum
Material Thickness: 0.059 inches minimum and 0.067 inches maximum
Material: steel overall
Style Designator: flat internal teeth

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
Y1-971	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-01-018-5476?

The FSCG of the NSN 5310-01-018-5476 is 5310

Does the NSN 5310-01-018-5476 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-01-018-5476 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 5310-01-018-5476 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-018-5476 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 5310-01-018-5476 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Mon, Mar 29, 1976