BL-11665-1

View detailed technical data, stock status, and sourcing information for: BL-11665-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5360 Coil, Flat, Leaf and Wire Springs

National Stock Number

5360-01-221-3221

Item Name Code

04228

Assigment Date

11/27/1985 (40 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.

0.160 inches nominal spring free outside diameter, one hook end both ends end style, 0.124 inches nominal inside diameter, right-hand or left-hand coil helix direction, 0.400 inches maximum spring free 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: 0.124 inches nominal
End Style: one hook end both ends
Spring Free Length: 0.400 inches maximum
Coil Helix Direction: right-hand or left-hand
Spring Free Outside Diameter: 0.160 inches nominal
End Angular Relationship: ends angled one to other
End Length: 0.380 inches nominal both ends
Material: steel overall
Style Designator: single torsion left 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
720-231-1	Torsion Helical Spring
BL-11665-1	Torsion Helical Spring

FAQs

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

What is the FSCG of the NSN 5360-01-221-3221?

The FSCG of the NSN 5360-01-221-3221 is 5360

Does NSN 5360-01-221-3221 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 5360-01-221-3221 contain precious materials?

Item does not contain precious metal.

Does NSN 5360-01-221-3221 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 5360-01-221-3221 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Wed, Nov 27, 1985