PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1040-91-5Relay,electromagnetic

Hamlin Inc · NSN 5945-00-027-5418 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-027-5418 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-027-5418. Primary manufacturer part number: 1040-91-5.
Features
  • Relay,electromagnetic — FSC 5945
  • Operating Voltage Rating and Type at Specified Temp: 115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
  • Nominal Thread Size: 0.164 INCHES SINGLE MOUNTING FACILITY IN
  • Terminal Type and Quantity: 2 WIRE LEAD ENERGIZING ELEMENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
  • Pile-Up Main Contact Form Arrangement: 1A A
  • Mounting Facility Type and Quantity: 4 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-027-5418, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Hamlin Inc. Government technical data includes 20 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-027-5418
Primary Part Number1040-91-5
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerHamlin Inc
StatusACTIVE
Operating Voltage Rating and Type at Specified Temp115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Nominal Thread Size0.164 INCHES SINGLE MOUNTING FACILITY IN
Terminal Type and Quantity2 WIRE LEAD ENERGIZING ELEMENT
Center to Center Distance Between Mounting Facilities Parallel to Width1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Pile-Up Main Contact Form Arrangement1A A
Mounting Facility Type and Quantity4 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Environmental ProtectionHERMETIC
Thread Class2B SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Nominal Operating Current Rating and Type140.0 MILLIAMPERES AC SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Length1.938 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Terminal Type and Quantity2 WIRE LEAD CONTACTS
Main Contact Load Current Rating at Maximum Rated Voltage750.0 MILLIAMPERES AC RESISTIVE LOAD
Coil Quantity1
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Winding Quantity1
Main Contact Maximum Voltage Rating in Volts230.0 AC
Winding DC Resistance Rating250.0 OHMS NOMINAL SINGLE WINDING
Frequency in Hertz50.0 MINIMUM AND 60.0 MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5961-00-232-8499 INTERCHANGEABLE
Semiconductor Device Assembly
5310-00-362-2023A2005 INTERCHANGEABLE
Nut,plain,slotted,hexagon
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
2240-00-417-4289A2005 INTERCHANGEABLE
Core and Tank Assembly
Kysor Industrial Corp
4010-01-236-12312CR798 INTERCHANGEABLE
Chain Assembly,single Leg
Oshkosh Defense Llc
3120-01-260-4833104091-5 INTERCHANGEABLE
Bearing,washer,thrust
Lift-Tech Intl Inc Crane and Hoist Opns
8030-01-370-7223 INTERCHANGEABLE
Tape,antiseizing
Cross-Reference Index
Part NumberManufacturer
1040-91-5 PRIMARY Hamlin Inc (USA)
A2005 Aeronautical Communications Equipment Inc (USA)
Related Parts
5961-00-232-8499INTERCHANGEABLE
SEMICONDUCTOR DEVICE ASSEMBLY
5310-00-362-2023INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
A2005
2240-00-417-4289INTERCHANGEABLE
CORE AND TANK ASSEMBLY
A2005
4010-01-236-1231INTERCHANGEABLE
CHAIN ASSEMBLY,SINGLE LEG
2CR798
3120-01-260-4833INTERCHANGEABLE
BEARING,WASHER,THRUST
104091-5
8030-01-370-7223INTERCHANGEABLE
TAPE,ANTISEIZING

Frequently Asked Questions

What is NSN 5945-00-027-5418?

NSN 5945-00-027-5418 is a Relay,electromagnetic, manufactured by Hamlin Inc, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-027-5418?

NSN 5945-00-027-5418 has 2 cross-referenced part numbers: 1040-91-5 (Hamlin Inc), A2005 (Aeronautical Communications Equipment Inc).

What NSN replaces 5945-00-027-5418?

There are 6 known substitutes for 5945-00-027-5418: 5961-00-232-8499, 5310-00-362-2023, 2240-00-417-4289 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1040-91-5?

Key specifications for 1040-91-5: Operating Voltage Rating and Type at Specified Temp: 115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING; Nominal Thread Size: 0.164 INCHES SINGLE MOUNTING FACILITY IN; Terminal Type and Quantity: 2 WIRE LEAD ENERGIZING ELEMENT; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. 23 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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