PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1177BFRelay,electromagnetic

Leach International Corp Div Leach International Corporation · NSN 5945-00-237-1158 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-237-1158 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-237-1158. Primary manufacturer part number: 1177BF.
Features
  • Relay,electromagnetic — FSC 5945
  • Winding DC Resistance Rating: 530.0 OHMS NOMINAL SINGLE WINDING
  • Nominal Operating Current Rating and Type: 50.0 MILLIAMPERES AC SINGLE WINDING
  • Operating Voltage Rating and Type at Specified Temp: 115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
  • Coil Quantity: 1
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
  • Mounting Facility Pattern: RECTANGULAR SINGLE MOUNTING FACILITY
  • Nominal Thread Size: 0.138 INCHES SINGLE MOUNTING FACILITY IN
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-237-1158, 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 Leach International Corp Div Leach International Corporation. Government technical data includes 19 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-237-1158
Primary Part Number1177BF
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerLeach International Corp Div Leach International Corporation
StatusCANCELLED
Winding DC Resistance Rating530.0 OHMS NOMINAL SINGLE WINDING
Nominal Operating Current Rating and Type50.0 MILLIAMPERES AC SINGLE WINDING
Operating Voltage Rating and Type at Specified Temp115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Coil Quantity1
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Frequency in Hertz60.0 NOMINAL
Thread Class2B SINGLE MOUNTING FACILITY
Terminal Type and Quantity8 PIN ALL FUNCTIONS
Center to Center Distance Between Mounting Facilities Parallel to Length0.625 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Winding Quantity1
Main Contact Load Current Rating at Maximum Rated Voltage12.5 AMPERES AC RESISTIVE LOAD
Center to Center Distance Between Mounting Facilities Parallel to Width2.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity4 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Nonpile-Up Main Contact Arrangement2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Main Contact Maximum Voltage Rating in Volts115.0 AC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
3010-00-066-9726015-2915-020 INTERCHANGEABLE
Drive,coupling,shaft
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5930-00-472-1877A-2011 INTERCHANGEABLE
Switch,rotary
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5930-00-814-4362 INTERCHANGEABLE
Handle,switch
2805-01-007-07524049338 INTERCHANGEABLE
Tappet,engine Poppet Valve
Chrysler Realty Company Llc Dba Daimler Chrysler
5996-01-217-7729 INTERCHANGEABLE
Amplifier Assembly
Cross-Reference Index
Part NumberManufacturer
1177BF PRIMARY Leach International Corp Div Leach International Corporation (USA)
A2011 Aeronautical Communications Equipment Inc (USA)
Related Parts
3010-00-066-9726INTERCHANGEABLE
DRIVE,COUPLING,SHAFT
015-2915-020
5930-00-472-1877INTERCHANGEABLE
SWITCH,ROTARY
A-2011
5930-00-814-4362INTERCHANGEABLE
HANDLE,SWITCH
2805-01-007-0752INTERCHANGEABLE
TAPPET,ENGINE POPPET VALVE
4049338
5996-01-217-7729INTERCHANGEABLE
AMPLIFIER ASSEMBLY

Frequently Asked Questions

What is NSN 5945-00-237-1158?

NSN 5945-00-237-1158 is a Relay,electromagnetic, manufactured by Leach International Corp Div Leach International Corporation, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-237-1158?

NSN 5945-00-237-1158 has 2 cross-referenced part numbers: 1177BF (Leach International Corp Div Leach International Corporation), A2011 (Aeronautical Communications Equipment Inc).

What NSN replaces 5945-00-237-1158?

There are 5 known substitutes for 5945-00-237-1158: 3010-00-066-9726, 5930-00-472-1877, 5930-00-814-4362 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1177BF?

Key specifications for 1177BF: Overall Length: 2.750 INCHES NOMINAL IN; Winding DC Resistance Rating: 530.0 OHMS NOMINAL SINGLE WINDING; Nominal Operating Current Rating and Type: 50.0 MILLIAMPERES AC SINGLE WINDING; Operating Voltage Rating and Type at Specified Temp: 115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-237-1158 still in active supply?

NSN 5945-00-237-1158 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.
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