PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

129-121-0157Reactor

Kearfott Corporation Div Guidance and Navigation Division · NSN 5950-00-954-2295 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-954-2295 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-954-2295. Primary manufacturer part number: 129-121-0157.
Features
  • Reactor — FSC 5950
  • Inductance Rating: 1.78 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP
  • Mounting Hole Diameter: 0.138 INCHES NOMINAL SINGLE GROUP IN
  • Inclosure Type: HERMETICALLY SEALED
  • Mounting Facility Quantity: 1 SINGLE GROUP
  • DC Resistance Rating in Ohms: 450.000 SINGLE COMPONENT SINGLE WINDING
  • Rating Method: ELECTRICAL 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 5950-00-954-2295, 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 Kearfott Corporation Div Guidance and Navigation Division. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-954-2295
Primary Part Number129-121-0157
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerKearfott Corporation Div Guidance and Navigation Division
StatusACTIVE
Inductance Rating1.78 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Mounting Hole Diameter0.138 INCHES NOMINAL SINGLE GROUP IN
Inclosure TypeHERMETICALLY SEALED
Mounting Facility Quantity1 SINGLE GROUP
DC Resistance Rating in Ohms450.000 SINGLE COMPONENT SINGLE WINDING
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Winding Operating Current12.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Terminal Type and Quantity2 WIRE LEAD
Body Length0.560 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Inductance TypeFIXED
Body Outside Diameter1.070 INCHES NOMINAL IN
Winding Quantity1 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5910-00-224-4412 INTERCHANGEABLE
Capacitor,variable,ceramic Diele
1270-00-674-799755403 INTERCHANGEABLE
Saddle,spoiler Supp
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5315-01-041-607955463 INTERCHANGEABLE
Pin,straight,headless
Parker Hannifin Corporation Div Hydraulic Systems Division
5962-01-125-2233SD77596 INTERCHANGEABLE
Microcircuit,digital
National Semiconductor Corporation
2840-01-344-603755463 INTERCHANGEABLE
Burner,turbine Engine
Williams International Co., L.l.c.
6145-01-374-71111362J INTERCHANGEABLE
Cable,special Purpose,electrical
Aerospace Wire & Cable, Inc.
5995-01-499-523555403 INTERCHANGEABLE
Cable Assembly,radio Frequency
Semflex, Inc.
5935-01-591-37475546-3 INTERCHANGEABLE
Connector,receptacle,electrical
Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)
Cross-Reference Index
Part NumberManufacturer
55463 Hamilton Watch Co Inc (USA)
129-121-0157 PRIMARY Kearfott Corporation Div Guidance and Navigation Division (USA)
26-5059-01 Hisonic, Llc (USA)
55403 Hamilton Watch Co Inc (USA)
Related Parts
5910-00-224-4412INTERCHANGEABLE
CAPACITOR,VARIABLE,CERAMIC DIELE
1270-00-674-7997INTERCHANGEABLE
SADDLE,SPOILER SUPP
55403
5315-01-041-6079INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
55463
5962-01-125-2233INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
SD77596
2840-01-344-6037INTERCHANGEABLE
BURNER,TURBINE ENGINE
55463
6145-01-374-7111INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
1362J
5995-01-499-5235INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
55403
5935-01-591-3747INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5546-3

Frequently Asked Questions

What is NSN 5950-00-954-2295?

NSN 5950-00-954-2295 is a Reactor, manufactured by Kearfott Corporation Div Guidance and Navigation Division, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-954-2295?

NSN 5950-00-954-2295 has 4 cross-referenced part numbers: 55463 (Hamilton Watch Co Inc), 129-121-0157 (Kearfott Corporation Div Guidance and Navigation Division), 26-5059-01 (Hisonic, Llc), 55403 (Hamilton Watch Co Inc).

What NSN replaces 5950-00-954-2295?

There are 8 known substitutes for 5950-00-954-2295: 5910-00-224-4412, 1270-00-674-7997, 5315-01-041-6079 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 129-121-0157?

Key specifications for 129-121-0157: Inductance Rating: 1.78 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING; Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP; Mounting Hole Diameter: 0.138 INCHES NOMINAL SINGLE GROUP IN; Inclosure Type: HERMETICALLY SEALED. 14 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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