PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21039Reactor

Trio Laboratories Inc · NSN 5950-00-081-7730 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-081-7730 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-081-7730. Primary manufacturer part number: 21039.
Features
  • Reactor — FSC 5950
  • Thread Quantity Per Inch: 40 SINGLE GROUP
  • Terminal Type and Quantity: 2 PIN
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 0.700 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Inductance Rating: 1.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Nominal Thread Size: 0.112 INCHES SINGLE GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-081-7730, 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 Trio Laboratories Inc. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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
NSN5950-00-081-7730
Primary Part Number21039
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerTrio Laboratories Inc
StatusACTIVE
Thread Quantity Per Inch40 SINGLE GROUP
Terminal Type and Quantity2 PIN
Reliability IndicatorNOT ESTABLISHED
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width0.700 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inductance Rating1.00 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Inductance TypeFIXED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
DC Resistance Rating in Ohms0.220 SINGLE COMPONENT SINGLE WINDING
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Winding Operating Current3.8 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Body Length1.200 INCHES NOMINAL IN
Winding Quantity1 SINGLE COMPONENT
Body Height1.100 INCHES NOMINAL IN
Inclosure TypeOPEN
Center to Center Distance Between Mounting Facilities Parallel to Length0.950 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width0.900 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
2990-00-074-88731305334H1 INTERCHANGEABLE
Muffler,exhaust
Dressta North America Ltd
6240-00-143-3049 INTERCHANGEABLE
Lamp,incandescent
2530-00-204-36341524 INTERCHANGEABLE
Cap,grease
Saginaw Products Corporation Dba Cignys
5930-01-073-3341 INTERCHANGEABLE
Switch,digital
5315-01-503-000221039 INTERCHANGEABLE
Pin,tapered,plain
Charles Reed Knight Jr Dba Knight's Armament Company
5130-01-560-2412 INTERCHANGEABLE
Sander,disk,pneumatic,portable
5360-01-592-187521039 INTERCHANGEABLE
Spring,helical,compression
Mission Systems Orchard Park Inc
Cross-Reference Index
Part NumberManufacturer
21039 Trio Laboratories Inc (USA)
Related Parts
2990-00-074-8873INTERCHANGEABLE
MUFFLER,EXHAUST
1305334H1
6240-00-143-3049INTERCHANGEABLE
LAMP,INCANDESCENT
2530-00-204-3634INTERCHANGEABLE
CAP,GREASE
1524
5930-01-073-3341INTERCHANGEABLE
SWITCH,DIGITAL
5315-01-503-0002INTERCHANGEABLE
PIN,TAPERED,PLAIN
21039
5130-01-560-2412INTERCHANGEABLE
SANDER,DISK,PNEUMATIC,PORTABLE
5360-01-592-1875INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21039

Frequently Asked Questions

What is NSN 5950-00-081-7730?

NSN 5950-00-081-7730 is a Reactor, manufactured by Trio Laboratories Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-081-7730?

NSN 5950-00-081-7730 has 1 cross-referenced part number: 21039 (Trio Laboratories Inc).

What NSN replaces 5950-00-081-7730?

There are 7 known substitutes for 5950-00-081-7730: 2990-00-074-8873, 6240-00-143-3049, 2530-00-204-3634 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21039?

Key specifications for 21039: Thread Quantity Per Inch: 40 SINGLE GROUP; Terminal Type and Quantity: 2 PIN; Reliability Indicator: NOT ESTABLISHED; Mounting Facility Quantity: 4 SINGLE GROUP. 19 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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