PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1A2B4Relay,electromagnetic

Automation Products Group, Inc. · NSN 5945-00-457-7972 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-457-7972 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-457-7972. Primary manufacturer part number: 1A2B4.
Features
  • Relay,electromagnetic — FSC 5945
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Nonpile-Up Main Contact Arrangement: 2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
  • Coil Quantity: 1
  • Unthreaded Mounting Hole Diameter: 0.173 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Main Contact Maximum Voltage Rating in Volts: 115.0 AC AND 28.0 DC
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-457-7972, 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 Automation Products Group, Inc.. Government technical data includes 14 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
NSN5945-00-457-7972
Primary Part Number1A2B4
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerAutomation Products Group, Inc.
StatusACTIVE
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to Width2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Nonpile-Up Main Contact Arrangement2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Coil Quantity1
Unthreaded Mounting Hole Diameter0.173 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Duty TypeCONTINUOUS
Main Contact Load Current Rating at Maximum Rated Voltage10.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD
Operating Voltage Rating and Type at Specified Temp115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Terminal Type and Quantity8 PIN ALL FUNCTIONS
Winding Quantity1
Frequency in Hertz60.0 NOMINAL
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2520-00-700-6780203310 INTERCHANGEABLE
Shaft Asy E,tension
Renk America Llc Div Renk America
5310-01-211-3047203310 INTERCHANGEABLE
Washer,flat
Cummins Inc.
5310-01-277-1818205282 INTERCHANGEABLE
Washer,flat
Cadillac Gage Textron Inc.
6515-01-356-3913203.310 INTERCHANGEABLE
Screw,bone,maxillofacial Surgery
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
7690-01-584-6395203310 INTERCHANGEABLE
Label
G R Mfg
6920-01-597-1537203310 INTERCHANGEABLE
Trainer,hands on
Cae Usa Inc.
Cross-Reference Index
Part NumberManufacturer
2033-10 Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging (USA)
1A2B4 PRIMARY Automation Products Group, Inc. (USA)
Related Parts
2520-00-700-6780INTERCHANGEABLE
SHAFT ASY E,TENSION
203310
5310-01-211-3047INTERCHANGEABLE
WASHER,FLAT
203310
5310-01-277-1818INTERCHANGEABLE
WASHER,FLAT
205282
6515-01-356-3913INTERCHANGEABLE
SCREW,BONE,MAXILLOFACIAL SURGERY
203.310
7690-01-584-6395INTERCHANGEABLE
LABEL
203310
6920-01-597-1537INTERCHANGEABLE
TRAINER,HANDS ON
203310

Frequently Asked Questions

What is NSN 5945-00-457-7972?

NSN 5945-00-457-7972 is a Relay,electromagnetic, manufactured by Automation Products Group, Inc., classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-457-7972?

NSN 5945-00-457-7972 has 2 cross-referenced part numbers: 2033-10 (Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging), 1A2B4 (Automation Products Group, Inc.).

What NSN replaces 5945-00-457-7972?

There are 6 known substitutes for 5945-00-457-7972: 2520-00-700-6780, 5310-01-211-3047, 5310-01-277-1818 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1A2B4?

Key specifications for 1A2B4: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Center to Center Distance Between Mounting Facilities Parallel to Width: 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Nonpile-Up Main Contact Arrangement: 2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY; Coil Quantity: 1. 17 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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