PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

502-3901Relay Assembly

Caterpillar Inc Div Caterpillar Defense · NSN 5945-01-662-8860 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-662-8860 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-662-8860. Primary manufacturer part number: 502-3901.
Features
  • Relay Assembly — FSC 5945
  • 2 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay Assembly, cataloged under National Stock Number 5945-01-662-8860, 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 Caterpillar Inc Div Caterpillar Defense. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRelay Assembly
FSC / FSG5945 — No Item Name Available (FSG 59)
ManufacturersCaterpillar Inc Div Caterpillar Defense (CAGE 11083)
Technical Specifications
ParameterValue
NSN5945-01-662-8860
Primary Part Number502-3901
Item NameRelay Assembly
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5975-00-168-039230441 INTERCHANGEABLE
Mounting Base,electrical Equipme
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
5930-01-662-3925377-0250 INTERCHANGEABLE
Switch,rotary
Caterpillar Inc Div Caterpillar Defense
5961-01-662-3938377-0265 INTERCHANGEABLE
Semiconductor Device,diode
Caterpillar Inc Div Caterpillar Defense
6625-01-662-8597502-3892 INTERCHANGEABLE
Control Panel,test
Caterpillar Inc Div Caterpillar Defense
5895-01-662-8854502-3913 INTERCHANGEABLE
Receiver-Transmitter Group
Caterpillar Inc Div Caterpillar Defense
5940-01-662-8858465-2502 INTERCHANGEABLE
Terminal Junction Block,sectiona
Caterpillar Inc Div Caterpillar Defense
5895-01-662-8861502-3912 INTERCHANGEABLE
Receiver-Transmitter Group
Caterpillar Inc Div Caterpillar Defense
Cross-Reference Index
Part NumberManufacturer
502-3901 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
502-3892 Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
5975-00-168-0392INTERCHANGEABLE
MOUNTING BASE,ELECTRICAL EQUIPME
30441
5930-01-662-3925INTERCHANGEABLE
SWITCH,ROTARY
377-0250
5961-01-662-3938INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
377-0265
6625-01-662-8597INTERCHANGEABLE
CONTROL PANEL,TEST
502-3892
5895-01-662-8854INTERCHANGEABLE
RECEIVER-TRANSMITTER GROUP
502-3913
5940-01-662-8858INTERCHANGEABLE
TERMINAL JUNCTION BLOCK,SECTIONA
465-2502
5895-01-662-8861INTERCHANGEABLE
RECEIVER-TRANSMITTER GROUP
502-3912

Frequently Asked Questions

What is NSN 5945-01-662-8860?

NSN 5945-01-662-8860 is a Relay Assembly, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-01-662-8860?

NSN 5945-01-662-8860 has 2 cross-referenced part numbers: 502-3901 (Caterpillar Inc Div Caterpillar Defense), 502-3892 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 5945-01-662-8860?

There are 7 known substitutes for 5945-01-662-8860: 5975-00-168-0392, 5930-01-662-3925, 5961-01-662-3938 and 4 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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