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NSN 3020-01-508-5899Government record, cited
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Guard, Mechanical Drive3020-01-508-5899

NSN 3020-01-508-5899 · NIIN 015085899
FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment
Government record, cited
Also searched as  3020-01-508-5899 · 3020015085899 · NIIN 015085899 · 01-508-5899 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · US73918-02 · US73918-02 · H73918-02-4-5 · H73918-02-4-5
Nearby stock numbers  ·
Features
  • Guard,mechanical Drive — FSC 3020
  • Mounting Method: FLANGE
Identification
  • NSN: 3020-01-508-5899
  • NIIN: 015085899
  • FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
  • FSG: 30 — Mechanical Power Transmission Equipment
General Description

The Guard,mechanical Drive, cataloged under National Stock Number 3020-01-508-5899, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-508-5899
Item NameGuard,mechanical Drive
FSC / FSG3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
StatusACTIVE
Mounting MethodFLANGE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5305-01-508-7522H73918-02-4-3 POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)Defense Maritime Solutions, Inc.
3120-01-508-8501H73918-02-3-2 POSSIBLE MATCH
BEARING ASSEMBLY,STERN TUBE
Possible match (shared part number)Defense Maritime Solutions, Inc.
5360-01-508-9208H73918-02-3-3 POSSIBLE MATCH
SPRING ASSY,BRDG
Possible match (shared part number)Defense Maritime Solutions, Inc.
5360-01-508-9211H73918-02-3-4 POSSIBLE MATCH
SPRING ASSY,BACKING
Possible match (shared part number)Defense Maritime Solutions, Inc.
5307-01-508-9346H73918-02-6-8 POSSIBLE MATCH
STUD,CONTINUOUS THREAD
Possible match (shared part number)Defense Maritime Solutions, Inc.
5306-01-508-9355H73918-02-4-2 POSSIBLE MATCH
BOLT,CLOSE TOLERANCE
Possible match (shared part number)Defense Maritime Solutions, Inc.
5306-01-508-9360H73918-02-7-2 POSSIBLE MATCH
BOLT,CLOSE TOLERANCE
Possible match (shared part number)Defense Maritime Solutions, Inc.
5305-01-508-9381H73918-02-7-3 POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
Possible match (shared part number)Defense Maritime Solutions, Inc.
5306-01-508-9402H73918-02-6-2 POSSIBLE MATCH
BOLT,CLOSE TOLERANCE
Possible match (shared part number)Defense Maritime Solutions, Inc.
5307-01-508-9432H73918-02-8-3 POSSIBLE MATCH
STUD,CONTINUOUS THREAD
Possible match (shared part number)Defense Maritime Solutions, Inc.
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
US73918-02 3/9 Design control — primary reference
Wartsila Lips Inc
US73918-02 C/1 Advisory reference — outside the item-of-supply concept
Defense Maritime Solutions, Inc.
H73918-02-4-5 C/1 Advisory reference — outside the item-of-supply concept
Defense Maritime Solutions, Inc.
H73918-02-4-5 5/9 Secondary reference
Wartsila Lips Inc
Related Parts
5305-01-508-7522POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
H73918-02-4-3
3120-01-508-8501POSSIBLE MATCH
BEARING ASSEMBLY,STERN TUBE
H73918-02-3-2
5360-01-508-9208POSSIBLE MATCH
SPRING ASSY,BRDG
H73918-02-3-3
5360-01-508-9211POSSIBLE MATCH
SPRING ASSY,BACKING
H73918-02-3-4
5307-01-508-9346POSSIBLE MATCH
STUD,CONTINUOUS THREAD
H73918-02-6-8
5306-01-508-9355POSSIBLE MATCH
BOLT,CLOSE TOLERANCE
H73918-02-4-2
5306-01-508-9360POSSIBLE MATCH
BOLT,CLOSE TOLERANCE
H73918-02-7-2
5305-01-508-9381POSSIBLE MATCH
SCREW,CAP,HEXAGON HEAD
H73918-02-7-3
5306-01-508-9402POSSIBLE MATCH
BOLT,CLOSE TOLERANCE
H73918-02-6-2
5307-01-508-9432POSSIBLE MATCH
STUD,CONTINUOUS THREAD
H73918-02-8-3

Frequently Asked Questions

What is NSN 3020-01-508-5899?

NSN 3020-01-508-5899 is a Guard,mechanical Drive, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What NSN replaces 3020-01-508-5899?

10 possible matches (shared part number, not a government interchangeability claim): 5305-01-508-7522, 3120-01-508-8501, 5360-01-508-9208. Verify interchangeability with system specifications before substitution.

What are the specifications of 3020-01-508-5899?

Key specifications for 3020-01-508-5899: Mounting Method: FLANGE; Special Features: DWG NO US73918-02 REF: 68220; End Item Identification: SEAL, STERN T. 1 specification is documented in the U.S. Government catalog.

Is NSN 3020-01-508-5899 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.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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