40A897

View detailed technical data, stock status, and sourcing information for: 40A897
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-855-6521

Item Name Code

15938

Assigment Date

01/01/1962 (64 years ago)

A resilient metal item, circular or nearly circular, which is designed to be inserted into an internal or external groove and retained by its own spring action, or it may have external prongs or projections designed to be inserted into a hole and retained by spring action of the prongs which grip by imbedding into the material. For items having internal prongs which perform the same function, see push on nut. It is used to keep and/or lock a part(s) in position, as a ball bearing on a shaft or in a housing. See also clip, retaining and pin, lock. Excludes:ring, connecting, round.

0.050 inches minimum and 0.070 inches maximum overall height, 0.482 inches minimum and 0.492 inches maximum outside diameter, steel comp 1095 overall material, 0.010 inches minimum and 0.020 inches maximum material thickness, 0.322 inches minimum and 0.332 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: 0.322 inches minimum and 0.332 inches maximum
Outside Diameter: 0.482 inches minimum and 0.492 inches maximum
Overall Height: 0.050 inches minimum and 0.070 inches maximum
Material Thickness: 0.010 inches minimum and 0.020 inches maximum
Material: steel comp 1095 overall
Material Document And Classification: sae assn std single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416 fed spec single treatment response overall
Style Designator: spring tension

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
40A897	Spring Tension Washer

FAQs

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

What is the FSCG of the NSN 5310-00-855-6521?

The FSCG of the NSN 5310-00-855-6521 is 5310

Does the NSN 5310-00-855-6521 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-00-855-6521 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 5310-00-855-6521 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-855-6521 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 5310-00-855-6521 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962