B4/A4/DIN127

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-394-4473

Item Name Code

14218

Assigment Date

08/09/1994 (31 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.

0.9 millimeters nominal material thickness, steel comp 316 overall material, 7.6 millimeters nominal outside diameter, split helical-right hand style designator, 4.1 millimeters nominal 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: 4.1 millimeters nominal
Outside Diameter: 7.6 millimeters nominal
Material Thickness: 0.9 millimeters nominal
Material: steel comp 316 overall
Style Designator: split helical-right hand

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
B4/A4/DIN127	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-01-394-4473?

The FSCG of the NSN 5310-01-394-4473 is 5310

Does the NSN 5310-01-394-4473 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-01-394-4473 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 5310-01-394-4473 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-394-4473 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 5310-01-394-4473 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Tue, Aug 9, 1994