PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AK4Relay,electromagnetic

Lucent Technologies Inc Corporate Headquarters · NSN 5945-00-899-6049 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-899-6049 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-899-6049. Primary manufacturer part number: AK4.
Features
  • Relay,electromagnetic — FSC 5945
  • Mounting Facility Type and Quantity: 2 THREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Winding DC Resistance Rating: 2.45 KILOHMS NOMINAL ALL WINDINGS
  • Main Contact Load Current Rating at Maximum Rated Voltage: 1.0 AMPERES DC RESISTIVE LOAD
  • Pile-Up Main Contact Form Arrangement: 1A AND 4C AND 6D A
  • Nominal Thread Size: 0.138 INCHES SINGLE MOUNTING FACILITY IN
  • Main Contact Maximum Voltage Rating in Volts: 50.0 DC
  • Coil Quantity: 1
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-899-6049, 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 Lucent Technologies Inc Corporate Headquarters. Government technical data includes 15 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-899-6049
Primary Part NumberAK4
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerLucent Technologies Inc Corporate Headquarters
StatusACTIVE
Mounting Facility Type and Quantity2 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Winding DC Resistance Rating2.45 KILOHMS NOMINAL ALL WINDINGS
Main Contact Load Current Rating at Maximum Rated Voltage1.0 AMPERES DC RESISTIVE LOAD
Pile-Up Main Contact Form Arrangement1A AND 4C AND 6D A
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Main Contact Maximum Voltage Rating in Volts50.0 DC
Coil Quantity1
Thread Class2B SINGLE MOUNTING FACILITY
Terminal Type and Quantity36 PIN ALL FUNCTIONS
Center to Center Distance Between Mounting Facilities Parallel to Length1.094 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding Quantity2
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Nominal Operating Current Rating and Type11.3 MILLIAMPERES DC ALL WINDINGS
Duty TypeCONTINUOUS
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-151-9206MS19060-4810 INTERCHANGEABLE
Ball,bearing
American Society for Testing and Materials Dba Astm International
6625-00-284-0855CL150 INTERCHANGEABLE
Multimeter
Yokogawa Corporation of America
5940-01-392-154504 04 01 7 INTERCHANGEABLE
Terminal Board
Phoenix Contact Development and Manufacturing Inc Dba Protiq Usa
8145-01-502-6294AK4 INTERCHANGEABLE
Container,collapsible,shipping
Kiplivit North America Inc
5110-01-723-9343AK-4 INTERCHANGEABLE
Knife,craftsman's
Olfa Products Corp
Cross-Reference Index
Part NumberManufacturer
AK4 American Telephone and Telegraph Co (USA)
AK4 PRIMARY Lucent Technologies Inc Corporate Headquarters (USA)
AK4 Lucent Technologies Inc Dba Federal Marketing Group (USA)
AK4RELAY American Telephone and Telegraph Co (USA)
Related Parts
3110-00-151-9206INTERCHANGEABLE
BALL,BEARING
MS19060-4810
6625-00-284-0855INTERCHANGEABLE
MULTIMETER
CL150
5940-01-392-1545INTERCHANGEABLE
TERMINAL BOARD
04 04 01 7
8145-01-502-6294INTERCHANGEABLE
CONTAINER,COLLAPSIBLE,SHIPPING
AK4
5110-01-723-9343INTERCHANGEABLE
KNIFE,CRAFTSMAN'S
AK-4

Frequently Asked Questions

What is NSN 5945-00-899-6049?

NSN 5945-00-899-6049 is a Relay,electromagnetic, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-899-6049?

NSN 5945-00-899-6049 has 4 cross-referenced part numbers: AK4 (American Telephone and Telegraph Co), AK4 (Lucent Technologies Inc Corporate Headquarters), AK4 (Lucent Technologies Inc Dba Federal Marketing Group), AK4RELAY (American Telephone and Telegraph Co).

What NSN replaces 5945-00-899-6049?

There are 5 known substitutes for 5945-00-899-6049: 3110-00-151-9206, 6625-00-284-0855, 5940-01-392-1545 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AK4?

Key specifications for AK4: Mounting Facility Type and Quantity: 2 THREADED HOLE(S) SINGLE MOUNTING FACILITY; Winding DC Resistance Rating: 2.45 KILOHMS NOMINAL ALL WINDINGS; Main Contact Load Current Rating at Maximum Rated Voltage: 1.0 AMPERES DC RESISTIVE LOAD; Pile-Up Main Contact Form Arrangement: 1A AND 4C AND 6D A. 18 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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