PartsTable TECHNICAL DATA SHEET
NSN 3020-00-042-3884Government record, cited

Gear, Antibacklash, Spur3020-00-042-3884

NSN 3020-00-042-3884 · NIIN 000423884 · Part number L310014345
Lockheed Martin Librascope Corporation · FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain · FSG 30 — Mechanical Power Transmission Equipment · CAGE 36090
Government record, cited
NSN 3020-00-042-3884 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-042-3884. Manufacturer of record part number: L310014345.
Also searched as  3020-00-042-3884 · 3020000423884 · NIIN 000423884 · 00-042-3884 · FSC 3020 Gears, Pulleys, Sprockets, and Transmission Chain · CAGE 36090 · L310014345 · 1340065 · 1340065-125
Nearby stock numbers  ·
Features
  • Gear,antibacklash,spur — FSC 3020
  • Bore Nominal Diameter: 0.1875 INCHES BOTH ENDS IN
  • Teeth Quantity: 125
  • Surface Treatment Document and Classification: MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Bore Style: PLAIN BOTH ENDS
  • Precision Classification: QUALITY NUMBER 12
  • Style Designator: PROTRUDING HUB
  • Material Document and Classification: QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Identification
  • NSN: 3020-00-042-3884
  • NIIN: 000423884
  • FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
  • FSG: 30 — Mechanical Power Transmission Equipment
  • Primary part number: L310014345
  • Manufacturer: Lockheed Martin Librascope Corporation
General Description

The Gear,antibacklash,spur, cataloged under National Stock Number 3020-00-042-3884, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lockheed Martin Librascope Corporation. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
NSN3020-00-042-3884
Primary Part NumberL310014345
Item NameGear,antibacklash,spur
FSC / FSG3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
ManufacturerLockheed Martin Librascope Corporation
StatusACTIVE
Bore Nominal Diameter0.1875 INCHES BOTH ENDS IN
Teeth Quantity125
Surface Treatment Document and ClassificationMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Bore StylePLAIN BOTH ENDS
Precision ClassificationQUALITY NUMBER 12
Style DesignatorPROTRUDING HUB
Material Document and ClassificationQQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Pitch Diameter1.3021 INCHES NOMINAL IN
Tooth FormSTANDARD
Hub Style DesignatorSPLIT SECOND END
Nominal Outside Diameter1.321 INCHES IN
Surface TreatmentANODIZE OVERALL
Pressure Angle20.0000 DEGREES
MaterialALUMINUM ALLOY 6061 OVERALL
Attachment MethodCLAMP
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3020-00-052-5596L310014-319 POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
Possible match (shared part number)Lockheed Martin Librascope Corporation
3020-00-084-7901L310014-316 POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
Possible match (shared part number)Lockheed Martin Librascope Corporation
3020-00-084-79041340065P120 POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3020-00-113-3320L310014-348 POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
Possible match (shared part number)Lockheed Martin Librascope Corporation
3020-00-243-6631L310014325 POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
Possible match (shared part number)Lockheed Martin Librascope Corporation
3020-00-406-01871340065-108 POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
Possible match (shared part number)Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3020-00-793-2090L310014320 POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
Possible match (shared part number)Lockheed Martin Librascope Corporation
5340-00-795-38922JC2905H05 POSSIBLE MATCH
CLAMP,SYNCHRO
Possible match (shared part number)Northrop Grumman Support Services Corp
Cross-Reference Index
Part NumberManufacturer
1340065-125 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
L310014345 PRIMARY Lockheed Martin Librascope Corporation (USA)
Reference documents
ReferenceMeaning
1340065 D/9 Drawing number reference only
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Related Parts
3020-00-052-5596POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
L310014-319
3020-00-084-7901POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
L310014-316
3020-00-084-7904POSSIBLE MATCH
GEAR,SPUR
1340065P120
3020-00-113-3320POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
L310014-348
3020-00-243-6631POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
L310014325
3020-00-406-0187POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
1340065-108
3020-00-793-2090POSSIBLE MATCH
GEAR,ANTIBACKLASH,SPUR
L310014320
5340-00-795-3892POSSIBLE MATCH
CLAMP,SYNCHRO
2JC2905H05

Frequently Asked Questions

What is NSN 3020-00-042-3884?

NSN 3020-00-042-3884 is a Gear,antibacklash,spur, manufactured by Lockheed Martin Librascope Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.

What part numbers are listed for NSN 3020-00-042-3884?

NSN 3020-00-042-3884 has 2 manufacturer part numbers on file: 1340065-125 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), L310014345 (Lockheed Martin Librascope Corporation).

What NSN replaces 3020-00-042-3884?

8 possible matches (shared part number, not a government interchangeability claim): 3020-00-052-5596, 3020-00-084-7901, 3020-00-084-7904. Verify interchangeability with system specifications before substitution.

What are the specifications of L310014345?

Key specifications for L310014345: Bore Nominal Diameter: 0.1875 INCHES BOTH ENDS IN; Teeth Quantity: 125; Surface Treatment Document and Classification: MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Bore Style: PLAIN BOTH ENDS. 15 specifications are documented in the U.S. Government catalog.

Is NSN 3020-00-042-3884 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.
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