PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

43750Relay Assembly

Recon/optical, Inc. Dba Pacific Optical · NSN 5945-01-168-2131 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-168-2131 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-168-2131. Primary manufacturer part number: 43750.
Features
  • Relay Assembly — FSC 5945
  • Mounting Facility: BASE
  • Mounting Configuration: 9 0.310 IN. DIA MTG HOLES AROUND EDGE IN
  • Surface Treatment: PAINT MOUNTING
  • 2 verified cross-references
  • Primary manufacturer: Recon/optical, Inc. Dba Pacific Optical
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay Assembly, cataloged under National Stock Number 5945-01-168-2131, 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 Recon/optical, Inc. Dba Pacific Optical. Government technical data includes 3 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: Active.

Technical Specifications
ParameterValue
NSN5945-01-168-2131
Primary Part Number43750
Item NameRelay Assembly
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerRecon/optical, Inc. Dba Pacific Optical
StatusACTIVE
Mounting FacilityBASE
Mounting Configuration9 0.310 IN. DIA MTG HOLES AROUND EDGE IN
Surface TreatmentPAINT MOUNTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-050-0148 INTERCHANGEABLE
Seal,plain Encased
5935-00-149-359082-36 INTERCHANGEABLE
Adapter,connector
Amphenol Corporation Div Amphenol Rf
4730-00-842-7880 INTERCHANGEABLE
Elbow,pipe
5360-01-300-255843750 INTERCHANGEABLE
Spring,helical,compression
Bourns Inc
5895-01-651-971643750 INTERCHANGEABLE
Switch,electronic
United States Department of the Navy Dba Naval Surface Warfare Center Panama City
Cross-Reference Index
Part NumberManufacturer
43750 PRIMARY Recon/optical, Inc. Dba Pacific Optical (USA)
390813 Raytheon Company Div Rmd Strategic (USA)
Related Parts
5330-00-050-0148INTERCHANGEABLE
SEAL,PLAIN ENCASED
5935-00-149-3590INTERCHANGEABLE
ADAPTER,CONNECTOR
82-36
4730-00-842-7880INTERCHANGEABLE
ELBOW,PIPE
5360-01-300-2558INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
43750
5895-01-651-9716INTERCHANGEABLE
SWITCH,ELECTRONIC
43750

Frequently Asked Questions

What is NSN 5945-01-168-2131?

NSN 5945-01-168-2131 is a Relay Assembly, manufactured by Recon/optical, Inc. Dba Pacific Optical, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-01-168-2131?

NSN 5945-01-168-2131 has 2 cross-referenced part numbers: 43750 (Recon/optical, Inc. Dba Pacific Optical), 390813 (Raytheon Company Div Rmd Strategic).

What NSN replaces 5945-01-168-2131?

There are 5 known substitutes for 5945-01-168-2131: 5330-00-050-0148, 5935-00-149-3590, 4730-00-842-7880 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 43750?

Key specifications for 43750: Overall Height: 7.380 INCHES NOMINAL IN; Overall Width: 7.500 INCHES NOMINAL IN; Overall Length: 22.130 INCHES NOMINAL IN; Mounting Facility: BASE. 6 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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