The Speed Reducer and Differential a, cataloged under National Stock Number 1020-00-889-6941, is classified within Federal Supply Class 1020 (Guns, Over 125mm Through 150mm) of the Weapons group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 1 specification, 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1020-00-889-6941 |
| Primary Part Number | 2527285 |
| Item Name | Speed Reducer and Differential a |
| FSC / FSG | 1020 / 10 — Guns, Over 125mm Through 150mm |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| General Characteristics Item Description | THREADS ON ALUMINUM ALLOY COATED WITH ANTISEIZE COMPOUND MIL-T-22361,5.968 IN. O/A SHAFT LG,5.750 IN. O/A DIA OF CASE AT MOUNTING END,4.781 IN. O/A CASE LG,SMALL END OF SHAFT EXTERNAL INVOLUTE SPLINE 48/96 PITCH 0.3542 IN. DIAMETRAL PITCH 17 TEETH,LARGE END EXTERNAL INVOLUTE SPLINE 24/28 PITCH 0.5833 IN. DIAMETRAL PITCH 14 TEETH,2 EA NO. 8-32 UNC HOLES,5 EA 7/32 IN. DIA MOUNTING HOLES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 1020-00-889-6941 is a Speed Reducer and Differential a, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1020, Guns, Over 125mm Through 150mm. Status: active.
NSN 1020-00-889-6941 has 2 manufacturer part numbers on file: 2527285 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), LM2527285 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-309-2956. Verify interchangeability with system specifications before substitution.
Key specifications for 2527285: General Characteristics Item Description: THREADS ON ALUMINUM ALLOY COATED WITH ANTISEIZE COMPOUND MIL-T-22361,5.968 IN. O/A SHAFT LG,5.750 IN. O/A DIA OF CASE AT MOUNTING END,4.781 IN. O/A CASE LG,SMALL END OF SHAFT EXTERNAL INVOLUTE SPLINE 48/96 PITCH 0.3542 IN. DIAMETRAL PITCH 17 TEETH,LARGE END EXTERNAL INVOLUTE SPLINE 24/28 PITCH 0.5833 IN. DIAMETRAL PITCH 14 TEETH,2 EA NO. 8-32 UNC HOLES,5 EA 7/32 IN. DIA MOUNTING HOLES IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1020-00-889-6941 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.