PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HB9931Reactor

Dowty Rfl Industries Inc · NSN 5950-00-931-3474 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-931-3474 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-931-3474. Primary manufacturer part number: HB9931.
Features
  • Reactor — FSC 5950
  • Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP
  • Body Width: 2.000 INCHES MAXIMUM IN
  • Terminal Type and Quantity: 2 TAB, SOLDER LUG
  • Winding Operating Current: 150.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE WINDING
  • Rating Method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING
  • Body Height: 2.250 INCHES NOMINAL IN
  • Inductance Rating: 4.00 HENRY MAXIMUM SINGLE COMPONENT SINGLE WINDING
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-931-3474, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Dowty Rfl Industries Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-931-3474
Primary Part NumberHB9931
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerDowty Rfl Industries Inc
StatusCANCELLED
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Body Width2.000 INCHES MAXIMUM IN
Terminal Type and Quantity2 TAB, SOLDER LUG
Winding Operating Current150.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Body Height2.250 INCHES NOMINAL IN
Inductance Rating4.00 HENRY MAXIMUM SINGLE COMPONENT SINGLE WINDING
DC Resistance Rating in Ohms90.000 SINGLE COMPONENT SINGLE WINDING
Mounting Hole Diameter0.187 INCHES NOMINAL SINGLE GROUP IN
Distance Between Mounting Facility Centers3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeFULLY INCLOSED
Reliability IndicatorNOT ESTABLISHED
Inductance TypeFIXED
Mounting Facility Quantity2 SINGLE GROUP
Winding Quantity1 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
2825-00-446-9053D15-651BPC521 INTERCHANGEABLE
Block,nozzle
Northrop Grumman Systems Corporation Div Marine Systems
6150-00-578-3272 INTERCHANGEABLE
Cable Assembly,power,electrical
3120-00-662-14093519 INTERCHANGEABLE
Bearing,sleeve
Manitowoc Engineering Co Division of the Manitowoc Co Inc
5360-00-789-09023519 INTERCHANGEABLE
Spring,helical,compression
Husco International Inc
4730-00-808-7798A-5270 INTERCHANGEABLE
Reducer,tube
Mueller Brass Co.
5920-01-114-18413519 INTERCHANGEABLE
Fuseholder,block
Cooper Bussmann, Llc Dba Cooper Industries
1005-01-376-91583519 INTERCHANGEABLE
Barrel,rifle
Krieger Barrels Inc
5920-01-449-13213519 INTERCHANGEABLE
Fuse,cartridge
Allen Sales and Services Ltd
8415-01-543-19253519 INTERCHANGEABLE
Protective Sleeves,shock Absorbi
Hatch Imports, Inc. Dba Hatch Gloves & Accessories
5360-01-575-134377442 INTERCHANGEABLE
Spring,helical,compression
Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling
Cross-Reference Index
Part NumberManufacturer
HB9931 Dowty Rfl Industries Inc (USA)
3519 Berkshire Transformer (USA)
D2327 Inrcore, Llc Div Inrcore (USA)
Related Parts
2825-00-446-9053INTERCHANGEABLE
BLOCK,NOZZLE
D15-651BPC521
6150-00-578-3272INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
3120-00-662-1409INTERCHANGEABLE
BEARING,SLEEVE
3519
5360-00-789-0902INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
3519
4730-00-808-7798INTERCHANGEABLE
REDUCER,TUBE
A-5270
5920-01-114-1841INTERCHANGEABLE
FUSEHOLDER,BLOCK
3519
1005-01-376-9158INTERCHANGEABLE
BARREL,RIFLE
3519
5920-01-449-1321INTERCHANGEABLE
FUSE,CARTRIDGE
3519
8415-01-543-1925INTERCHANGEABLE
PROTECTIVE SLEEVES,SHOCK ABSORBI
3519
5360-01-575-1343INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
77442

Frequently Asked Questions

What is NSN 5950-00-931-3474?

NSN 5950-00-931-3474 is a Reactor, manufactured by Dowty Rfl Industries Inc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-931-3474?

NSN 5950-00-931-3474 has 3 cross-referenced part numbers: HB9931 (Dowty Rfl Industries Inc), 3519 (Berkshire Transformer), D2327 (Inrcore, Llc Div Inrcore).

What NSN replaces 5950-00-931-3474?

There are 10 known substitutes for 5950-00-931-3474: 2825-00-446-9053, 6150-00-578-3272, 3120-00-662-1409 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HB9931?

Key specifications for HB9931: Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP; Body Width: 2.000 INCHES MAXIMUM IN; Terminal Type and Quantity: 2 TAB, SOLDER LUG; Winding Operating Current: 150.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE WINDING. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-931-3474 still in active supply?

NSN 5950-00-931-3474 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com