PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

400812Reactor

Ail Systems Inc Sub of Eaton Corp · NSN 5950-00-857-1957 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-857-1957 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-857-1957. Primary manufacturer part number: 400812.
Features
  • Reactor — FSC 5950
  • Body Height: 4.620 INCHES NOMINAL IN
  • Body Length: 4.863 INCHES NOMINAL IN
  • Winding Operating Current: 750.0 MILLIAMPERES DC MINIMUM AND 7.5 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
  • Inductance Rating: 5.00 MILLIHENRIES MINIMUM AND 50.00 MILLIHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
  • Mounting Hole Diameter: 0.252 INCHES NOMINAL SINGLE GROUP IN
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.312 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-857-1957, 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 Ail Systems Inc Sub of Eaton Corp. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-857-1957
Primary Part Number400812
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAil Systems Inc Sub of Eaton Corp
StatusACTIVE
Body Height4.620 INCHES NOMINAL IN
Body Length4.863 INCHES NOMINAL IN
Winding Operating Current750.0 MILLIAMPERES DC MINIMUM AND 7.5 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Inductance Rating5.00 MILLIHENRIES MINIMUM AND 50.00 MILLIHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING
Mounting Hole Diameter0.252 INCHES NOMINAL SINGLE GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.312 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inductance TypeSWINGING
Mounting Facility Quantity4 SINGLE GROUP
Inclosure TypeOPEN
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY NAVORD OD 41152
Terminal Type and Quantity2 TAB, SOLDER LUG
Body Width3.500 INCHES MAXIMUM IN
Reliability IndicatorNOT ESTABLISHED
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
DC Resistance Rating in Ohms0.180 SINGLE COMPONENT SINGLE WINDING
Winding Quantity1 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5306-00-121-9671 INTERCHANGEABLE
Bolt,machine
2520-00-164-264414153 INTERCHANGEABLE
Yoke
Komatsu America Corporation
5845-00-189-940940081-2 INTERCHANGEABLE
Slide Assy,tilt Lh
L3harris Technologies, Inc.
5310-00-220-68037412391 INTERCHANGEABLE
Nut,plain,castellated,hexagon
U S Army Tank Automotive Command Amsta-Im-Mm
3460-00-228-205014153 INTERCHANGEABLE
Wheel,abrasive
Black and Decker Us Inc
5305-00-272-41031402574 INTERCHANGEABLE
Screw,machine
Chrysler Realty Company Llc Dba Daimler Chrysler
5330-00-477-2581V2B10666TA INTERCHANGEABLE
Retainer,packing
Vacco Industries
3020-00-517-43661039311 INTERCHANGEABLE
Gear,spur
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3120-00-804-97121410-0047 INTERCHANGEABLE
Bushing,sleeve
Keysight Technologies Inc
4030-01-022-56674005970 INTERCHANGEABLE
Swaging Sleeve,wire Rope
Esco Corporation
Cross-Reference Index
Part NumberManufacturer
400812 Ail Systems Inc Sub of Eaton Corp (USA)
14153 Robert M. Hadley Company, Inc. (USA)
Related Parts
5306-00-121-9671INTERCHANGEABLE
BOLT,MACHINE
2520-00-164-2644INTERCHANGEABLE
YOKE
14153
5845-00-189-9409INTERCHANGEABLE
SLIDE ASSY,TILT LH
40081-2
5310-00-220-6803INTERCHANGEABLE
NUT,PLAIN,CASTELLATED,HEXAGON
7412391
3460-00-228-2050INTERCHANGEABLE
WHEEL,ABRASIVE
14153
5305-00-272-4103INTERCHANGEABLE
SCREW,MACHINE
1402574
5330-00-477-2581INTERCHANGEABLE
RETAINER,PACKING
V2B10666TA
3020-00-517-4366INTERCHANGEABLE
GEAR,SPUR
1039311
3120-00-804-9712INTERCHANGEABLE
BUSHING,SLEEVE
1410-0047
4030-01-022-5667INTERCHANGEABLE
SWAGING SLEEVE,WIRE ROPE
4005970
5961-01-107-9229INTERCHANGEABLE
RECTIFIER,SEMICONDUCTOR DEVICE,U
14153
5306-01-115-2502INTERCHANGEABLE
BOLT,SHOULDER
01681

Frequently Asked Questions

What is NSN 5950-00-857-1957?

NSN 5950-00-857-1957 is a Reactor, manufactured by Ail Systems Inc Sub of Eaton Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-857-1957?

NSN 5950-00-857-1957 has 2 cross-referenced part numbers: 400812 (Ail Systems Inc Sub of Eaton Corp), 14153 (Robert M. Hadley Company, Inc.).

What NSN replaces 5950-00-857-1957?

There are 12 known substitutes for 5950-00-857-1957: 5306-00-121-9671, 2520-00-164-2644, 5845-00-189-9409 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 400812?

Key specifications for 400812: Body Height: 4.620 INCHES NOMINAL IN; Body Length: 4.863 INCHES NOMINAL IN; Winding Operating Current: 750.0 MILLIAMPERES DC MINIMUM AND 7.5 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING; Inductance Rating: 5.00 MILLIHENRIES MINIMUM AND 50.00 MILLIHENRIES MAXIMUM SINGLE COMPONENT SINGLE WINDING. 17 total characteristics are documented in the Federal Logistics Information System.

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