NK-816

View detailed technical data, stock status, and sourcing information for: NK-816
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5360 Coil, Flat, Leaf and Wire Springs

National Stock Number

5360-00-931-2142

Item Name Code

04226

Assigment Date

09/14/1966 (59 years ago)

A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes:packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.

right-hand or left-hand coil helix direction, 3.250 inches nominal inside diameter, 7.438 inches nominal spring free length, spring end,squared and ground both ends end style, 4.000 inches nominal spring solid length

Product Characteristics

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

Inside Diameter: 3.250 inches nominal
End Style: spring end,squared and ground both ends
Spring Free Length: 7.438 inches nominal
Spring Solid Length: 4.000 inches nominal
Coil Helix Direction: right-hand or left-hand
Spring Deflection Rate: 290.000 pounds per inch nominal
Spring Free Outside Diameter: 4.250 inches nominal
Material: steel overall
Material Document And Classification: astm a68 assn std single material response overall
Style Designator: cylindrical

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
CIN-NK816-1	Compression Helical Spring
NK-816	Compression Helical Spring
NK816-1	Compression Helical Spring

FAQs

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

What is the FSCG of the NSN 5360-00-931-2142?

The FSCG of the NSN 5360-00-931-2142 is 5360

Does NSN 5360-00-931-2142 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 5360-00-931-2142 contain precious materials?

Precious metal content is unknown

Does NSN 5360-00-931-2142 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 5360-00-931-2142 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Wed, Sep 14, 1966