Spring Free Outside Diameter: 0.125 INCHES NOMINAL IN
End Style: SHORT TWISTED HOOK BOTH ENDS
Design Type: CLOSED
Style Designator: CYLINDRICAL
Spring Free Length: 0.406 INCHES NOMINAL IN
Inside Diameter: 0.099 INCHES NOMINAL IN
Coil Quantity: 11
Identification
NSN: 5360-00-663-3373
NIIN: 006633373
FSC: 5360 — Coil, Flat, Leaf, and Wire Springs
FSG: 53 — Hardware and Abrasives
General Description
The Spring,helical,extension, cataloged under National Stock Number 5360-00-663-3373, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5360-00-663-3373
Item Name
Spring,helical,extension
FSC / FSG
5360 / 53 — Coil, Flat, Leaf, and Wire Springs
Status
ACTIVE
Spring Free Outside Diameter
0.125 INCHES NOMINAL IN
End Style
SHORT TWISTED HOOK BOTH ENDS
Design Type
CLOSED
Style Designator
CYLINDRICAL
Spring Free Length
0.406 INCHES NOMINAL IN
Inside Diameter
0.099 INCHES NOMINAL IN
Coil Quantity
11
Surface Treatment
TIN OVERALL
Coil Helix Direction
RIGHT-HAND OR LEFT-HAND
Material
STEEL OVERALL
Hook Radius
0.052 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5310-00-872-723355959POSSIBLE MATCH
NUT,PLAIN,HEXAGON
Possible match (shared part number)Parker Hannifin Corporation Div Hydraulic Systems Division
4520-01-478-352255959POSSIBLE MATCH
HEATING ELEMENT,ELECTRICAL,NONIM
Possible match (shared part number)American Permanent Ware Company Dba Apw/wyott Foodservice Eqp Co
5995-01-496-38751132993POSSIBLE MATCH
CABLE ASSEMBLY,SPECIAL PURPOSE,E
Possible match (shared part number)Viasat Inc Dba Viasat Inc
5998-01-558-999855959POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Naval Air Warfare Ctr Aircraft Div
1650-01-616-368455959POSSIBLE MATCH
DAMPENER,FLUID PRESSURE
Possible match (shared part number)Malabar
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
SMB187697
5/2Secondary reference
U.S. Government activity
55959
3/9Design control — primary reference
U.S. Government activity
Related Parts
5310-00-872-7233POSSIBLE MATCH
NUT,PLAIN,HEXAGON
55959
4520-01-478-3522POSSIBLE MATCH
HEATING ELEMENT,ELECTRICAL,NONIM
55959
5995-01-496-3875POSSIBLE MATCH
CABLE ASSEMBLY,SPECIAL PURPOSE,E
1132993
5998-01-558-9998POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
55959
1650-01-616-3684POSSIBLE MATCH
DAMPENER,FLUID PRESSURE
55959
Frequently Asked Questions
What is NSN 5360-00-663-3373?
NSN 5360-00-663-3373 is a Spring,helical,extension, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
What NSN replaces 5360-00-663-3373?
5 possible matches (shared part number, not a government interchangeability claim): 5310-00-872-7233, 4520-01-478-3522, 5995-01-496-3875. Verify interchangeability with system specifications before substitution.
What are the specifications of 5360-00-663-3373?
Key specifications for 5360-00-663-3373: Spring Free Outside Diameter: 0.125 INCHES NOMINAL IN; End Style: SHORT TWISTED HOOK BOTH ENDS; Design Type: CLOSED; Style Designator: CYLINDRICAL. 11 specifications are documented in the U.S. Government catalog.
Is NSN 5360-00-663-3373 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.