PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21978HSpring,helical,compression

Navistar International Corporation Dba Navistar · NSN 5360-00-378-7218 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-378-7218 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-378-7218. Primary manufacturer part number: 21978H.
Features
  • Spring,helical,compression — FSC 5360
  • Inside Diameter: 0.375 INCHES NOMINAL IN
  • Style Designator: CYLINDRICAL
  • Accommodated Rod Diameter: 0.313 INCHES NOMINAL IN
  • Coil Helix Direction: RIGHT-HAND OR LEFT-HAND
  • Spring Solid Outside Diameter: 0.500 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Coil Quantity: 9
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-378-7218, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navistar International Corporation Dba Navistar. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5360-00-378-7218
Primary Part Number21978H
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerNavistar International Corporation Dba Navistar
StatusCANCELLED
Inside Diameter0.375 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Accommodated Rod Diameter0.313 INCHES NOMINAL IN
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Spring Solid Outside Diameter0.500 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Coil Quantity9
Bore Diameter0.531 INCHES NOMINAL IN
Spring Free Length1.250 INCHES NOMINAL IN
Load Rating16.830 POUNDS MINIMUM AND 20.570 POUNDS MAXIMUM LBS
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Spring Length Under Load0.750 INCHES NOMINAL IN
Spring Free Outside Diameter0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5925-00-258-408629137 INTERCHANGEABLE
Circuit Breaker
Naval Ship Systems Command
5360-00-664-389721978H INTERCHANGEABLE
Spring,helical,compression
Kalmar AC Inc
5998-01-154-506029137 INTERCHANGEABLE
Circuit Card Assembly
Hamilton Sundstrand Corporation Dba Collins Aerospace
6530-01-164-297129137 INTERCHANGEABLE
Pack Surgical Lapar
Cardinal Health 200, Llc
3820-01-171-720429137 INTERCHANGEABLE
Auger Assembly,gopher
Terex Reedrill Dba Reedrill Texoma Div Terex Mining
5360-01-466-2766 INTERCHANGEABLE
Spring,helical,compression
6520-01-509-771929137 INTERCHANGEABLE
Abutment,dental Implant
Nobel Biocare Usa, Llc
4140-01-601-724929137 INTERCHANGEABLE
Impeller,fan,axial
Drs Advanced Isr, Llc
4140-01-605-878329137 INTERCHANGEABLE
Shroud,fan,axial
Ge Aviation Systems Llc Dba Ge Aviation Systems Llc
Cross-Reference Index
Part NumberManufacturer
21978H Navistar International Corporation Dba Navistar (USA)
29137 Hyster-Yale Group, Inc. (USA)
29137 Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling (USA)
21978H Komatsu American Intl Co (USA)
21978H International Harvester Co Agricultural Equipment Div (USA)
526380 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
Related Parts
5925-00-258-4086INTERCHANGEABLE
CIRCUIT BREAKER
29137
5360-00-664-3897INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21978H
5998-01-154-5060INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
29137
6530-01-164-2971INTERCHANGEABLE
PACK SURGICAL LAPAR
29137
3820-01-171-7204INTERCHANGEABLE
AUGER ASSEMBLY,GOPHER
29137
5360-01-466-2766INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6520-01-509-7719INTERCHANGEABLE
ABUTMENT,DENTAL IMPLANT
29137
4140-01-601-7249INTERCHANGEABLE
IMPELLER,FAN,AXIAL
29137
4140-01-605-8783INTERCHANGEABLE
SHROUD,FAN,AXIAL
29137

Frequently Asked Questions

What is NSN 5360-00-378-7218?

NSN 5360-00-378-7218 is a Spring,helical,compression, manufactured by Navistar International Corporation Dba Navistar, classified under FSC 5360 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5360-00-378-7218?

NSN 5360-00-378-7218 has 6 cross-referenced part numbers: 21978H (Navistar International Corporation Dba Navistar), 29137 (Hyster-Yale Group, Inc.), 29137 (Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling), 21978H (Komatsu American Intl Co), 21978H (International Harvester Co Agricultural Equipment Div) and 1 more.

What NSN replaces 5360-00-378-7218?

There are 9 known substitutes for 5360-00-378-7218: 5925-00-258-4086, 5360-00-664-3897, 5998-01-154-5060 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21978H?

Key specifications for 21978H: Inside Diameter: 0.375 INCHES NOMINAL IN; Style Designator: CYLINDRICAL; Accommodated Rod Diameter: 0.313 INCHES NOMINAL IN; Coil Helix Direction: RIGHT-HAND OR LEFT-HAND. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5360-00-378-7218 still in active supply?

NSN 5360-00-378-7218 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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