PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

E-3942C DFARGear Assembly,speed Decreaser

Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer · NSN 3010-01-184-4659 · FSC 3010 · No Item Name Available
Verified by PartsTable
NSN 3010-01-184-4659 — this item is cataloged by the U.S. Government under National Stock Number 3010-01-184-4659. Primary manufacturer part number: E-3942C DFAR.
Features
  • Gear Assembly,speed Decreaser — FSC 3010
  • Shaft Position: OUTPUT SHAFT EXTENDS TO RIGHT
  • Lubrication System: OIL BATH
  • Input Shaft Quantity: 1
  • Input Shaft Type: STRAIGHT W/KEYWAY
  • Design Type: SINGLE REDUCTION
  • Output Shaft Quantity: 1
  • Output Shaft Type: STRAIGHT W/KEYWAY
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear Assembly,speed Decreaser, cataloged under National Stock Number 3010-01-184-4659, is classified within Federal Supply Class 3010 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3010-01-184-4659
Primary Part NumberE-3942C DFAR
Item NameGear Assembly,speed Decreaser
FSC / FSG3010 / 30 — No Item Name Available
ManufacturerDover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
StatusACTIVE
Shaft PositionOUTPUT SHAFT EXTENDS TO RIGHT
Lubrication SystemOIL BATH
Input Shaft Quantity1
Input Shaft TypeSTRAIGHT W/KEYWAY
Design TypeSINGLE REDUCTION
Output Shaft Quantity1
Output Shaft TypeSTRAIGHT W/KEYWAY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4820-00-287-5617170C-N INTERCHANGEABLE
Cock,plug
Anderson Brass Co
3020-01-061-0404919934 INTERCHANGEABLE
Gear,spur
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
3040-01-061-0481915134 INTERCHANGEABLE
Gearshaft,helical
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
3010-01-069-1276E-4160PC110 INTERCHANGEABLE
Gear Assembly,speed Decreaser
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
3010-01-184-4660E3942-NHRB-VERT-5.7 TO 1 INTERCHANGEABLE
Gear Assembly,speed Decreaser
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
3040-01-188-8580704021 INTERCHANGEABLE
Shaft,shouldered
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
3010-01-225-2484E-3942C INTERCHANGEABLE
Gear Assembly,speed Decreaser
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
Cross-Reference Index
Part NumberManufacturer
E3942/NHRB/H0RZ Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
E-3942C DFAR PRIMARY Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
E3942 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
E3942/NHRB/HORZ/5.7 TO 1 Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA)
Related Parts
4820-00-287-5617INTERCHANGEABLE
COCK,PLUG
170C-N
3020-01-061-0404INTERCHANGEABLE
GEAR,SPUR
919934
3040-01-061-0481INTERCHANGEABLE
GEARSHAFT,HELICAL
915134
3010-01-069-1276INTERCHANGEABLE
GEAR ASSEMBLY,SPEED DECREASER
E-4160PC110
3010-01-184-4660INTERCHANGEABLE
GEAR ASSEMBLY,SPEED DECREASER
E3942-NHRB-VERT-5.7 TO 1
3040-01-188-8580INTERCHANGEABLE
SHAFT,SHOULDERED
704021
3010-01-225-2484INTERCHANGEABLE
GEAR ASSEMBLY,SPEED DECREASER
E-3942C

Frequently Asked Questions

What is NSN 3010-01-184-4659?

NSN 3010-01-184-4659 is a Gear Assembly,speed Decreaser, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 3010 (No Item Name Available). Status: active.

What are the part numbers for NSN 3010-01-184-4659?

NSN 3010-01-184-4659 has 4 cross-referenced part numbers: E3942/NHRB/H0RZ (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E-3942C DFAR (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E3942 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer), E3942/NHRB/HORZ/5.7 TO 1 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).

What NSN replaces 3010-01-184-4659?

There are 7 known substitutes for 3010-01-184-4659: 4820-00-287-5617, 3020-01-061-0404, 3040-01-061-0481 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of E-3942C DFAR?

Key specifications for E-3942C DFAR: Shaft Position: OUTPUT SHAFT EXTENDS TO RIGHT; Lubrication System: OIL BATH; Input Shaft Quantity: 1; Input Shaft Type: STRAIGHT W/KEYWAY. 7 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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