21978H

View detailed technical data, stock status, and sourcing information for: 21978H
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5360 Coil, Flat, Leaf and Wire Springs

National Stock Number

5360-00-378-7218

Item Name Code

04226

Assigment Date

01/01/1963 (63 years ago)

1.250 inches nominal spring free length, spring end,squared and ground both ends end style, 0.375 inches nominal inside diameter, 0.313 inches nominal accommodated rod diameter, 0.531 inches nominal bore diameter

Product Characteristics

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

Inside Diameter: 0.375 inches nominal
End Style: spring end,squared and ground both ends
Bore Diameter: 0.531 inches nominal
Spring Free Length: 1.250 inches nominal
Accommodated Rod Diameter: 0.313 inches nominal
Coil Quantity: 9
Load Rating: 16.830 pounds minimum and 20.570 pounds maximum
Spring Solid Outside Diameter: 0.500 inches nominal
Coil Helix Direction: right-hand or left-hand
Spring Free Outside Diameter: 0.500 inches nominal
Spring Length Under Load: 0.750 inches nominal
Material: steel overall
Style Designator: cylindrical

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5360-00-558-5624	No Name Available	07/01/1983
5360-00-664-3906	No Name Available	06/01/1983
3510-00-997-8869	No Name Available	01/01/1987

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
21978H	Compression Helical Spring
526380	Compression Helical Spring

FAQs

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

What is the FSCG of the NSN 5360-00-378-7218?

The FSCG of the NSN 5360-00-378-7218 is 5360

Does NSN 5360-00-378-7218 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 5360-00-378-7218 contain precious materials?

Precious metal content is unknown

Does NSN 5360-00-378-7218 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 5360-00-378-7218 was assigned to the Federal Catalog?

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