The Gear Assembly,speed Decreaser, cataloged under National Stock Number 3010-01-189-3396, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Gear Assembly,speed Decreaser |
| FSC / FSG | 3010 — Torque Converters and Speed Changers (FSG 30) |
| Manufacturers | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (CAGE 07524) |
| Parameter | Value |
|---|---|
| NSN | 3010-01-189-3396 |
| Primary Part Number | E-3548C |
| Item Name | Gear Assembly,speed Decreaser |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| E-3548C PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
| Reference | Meaning |
|---|---|
| E-3548/NHR0V/H0 | C/1 Advisory reference — outside the item-of-supply concept Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| E3548/NHR0V/H0R | C/1 Advisory reference — outside the item-of-supply concept Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| E3548/NHROV/HORZ/4.94 TO 1 | 5/9 Secondary reference Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| E-3548 | D/9 Drawing number reference only Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
NSN 3010-01-189-3396 is a Gear Assembly,speed Decreaser, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-189-3396 has 1 manufacturer part number on file: E-3548C (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
4 possible matches (shared part number, not a government interchangeability claim): 3010-01-538-1821, 3010-01-559-9068, 3010-01-654-8998. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.