PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-21827Gear,helical

L3 Technologies, Inc. · NSN 3020-01-312-1973 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-312-1973 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-312-1973. Primary manufacturer part number: A-21827.
Features
  • Gear,helical — FSC 3020
  • Material: COPPER ALLOY OVERALL
  • 3 verified cross-references
  • Primary manufacturer: L3 Technologies, Inc.
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Copper Alloy Overall construction
General Description

The Gear,helical, cataloged under National Stock Number 3020-01-312-1973, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is L3 Technologies, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-312-1973
Primary Part NumberA-21827
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerL3 Technologies, Inc.
StatusACTIVE
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
6320-00-223-047825380 INTERCHANGEABLE
Transmitter,rudder Angle
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
5305-00-450-2727 INTERCHANGEABLE
Screw Cap,grip
1650-00-654-8527 INTERCHANGEABLE
Shaft,air Turbine Drive
3455-01-044-636119579 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
3020-01-312-1972A-11462 INTERCHANGEABLE
Gear,helical
L3 Technologies, Inc.
4730-01-377-394025380-44 INTERCHANGEABLE
Coupling,pipe
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
Cross-Reference Index
Part NumberManufacturer
25380-13 Calgon Carbon Uv Technologies Llc Dba Hyde Marine (USA)
A-21827 PRIMARY L3 Technologies, Inc. (USA)
25380 Calgon Carbon Uv Technologies Llc Dba Hyde Marine (USA)
Related Parts
6320-00-223-0478INTERCHANGEABLE
TRANSMITTER,RUDDER ANGLE
25380
5305-00-450-2727INTERCHANGEABLE
SCREW CAP,GRIP
1650-00-654-8527INTERCHANGEABLE
SHAFT,AIR TURBINE DRIVE
3455-01-044-6361INTERCHANGEABLE
REAMER,MACHINE
19579
3020-01-312-1972INTERCHANGEABLE
GEAR,HELICAL
A-11462
4730-01-377-3940INTERCHANGEABLE
COUPLING,PIPE
25380-44

Frequently Asked Questions

What is NSN 3020-01-312-1973?

NSN 3020-01-312-1973 is a Gear,helical, manufactured by L3 Technologies, Inc., classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-312-1973?

NSN 3020-01-312-1973 has 3 cross-referenced part numbers: 25380-13 (Calgon Carbon Uv Technologies Llc Dba Hyde Marine), A-21827 (L3 Technologies, Inc.), 25380 (Calgon Carbon Uv Technologies Llc Dba Hyde Marine).

What NSN replaces 3020-01-312-1973?

There are 6 known substitutes for 3020-01-312-1973: 6320-00-223-0478, 5305-00-450-2727, 1650-00-654-8527 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-21827?

Key specifications for A-21827: Material: COPPER ALLOY OVERALL. 1 total characteristics are documented in the Federal Logistics Information System.

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