PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

73-18-000Telephone Central Office Section

R-Tec Systems Div of Reliance Electric Co · NSN 5805-00-405-0421 · FSC 5805 · No Item Name Available
Verified by PartsTable
NSN 5805-00-405-0421 — this item is cataloged by the U.S. Government under National Stock Number 5805-00-405-0421. Primary manufacturer part number: 73-18-000.
Features
  • Telephone Central Office Section — FSC 5805
  • FSC Application Data: TELEPHONE AND TELEGRAPH EQUIPMENT
  • 1 verified cross-reference
  • Primary manufacturer: R-Tec Systems Div of Reliance Electric Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Telephone Central Office Section, cataloged under National Stock Number 5805-00-405-0421, is classified within Federal Supply Class 5805 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is R-Tec Systems Div of Reliance Electric Co. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5805-00-405-0421
Primary Part Number73-18-000
Item NameTelephone Central Office Section
FSC / FSG5805 / 58 — No Item Name Available
ManufacturerR-Tec Systems Div of Reliance Electric Co
StatusACTIVE
FSC Application DataTELEPHONE AND TELEGRAPH EQUIPMENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5331-01-289-44217318000 INTERCHANGEABLE
O-Ring
Alfa Laval Inc
Cross-Reference Index
Part NumberManufacturer
73-18-000 PRIMARY R-Tec Systems Div of Reliance Electric Co (USA)
Related Parts
5331-01-289-4421INTERCHANGEABLE
O-RING
7318000

Frequently Asked Questions

What is NSN 5805-00-405-0421?

NSN 5805-00-405-0421 is a Telephone Central Office Section, manufactured by R-Tec Systems Div of Reliance Electric Co, classified under FSC 5805 (No Item Name Available). Status: active.

What are the part numbers for NSN 5805-00-405-0421?

NSN 5805-00-405-0421 has 1 cross-referenced part number: 73-18-000 (R-Tec Systems Div of Reliance Electric Co).

What NSN replaces 5805-00-405-0421?

There is 1 known substitute for 5805-00-405-0421: 5331-01-289-4421. Verify interchangeability with system specifications before substitution.

What are the specifications of 73-18-000?

Key specifications for 73-18-000: FSC Application Data: TELEPHONE AND TELEGRAPH EQUIPMENT; Overall Height: 1.125 INCHES NOMINAL IN; Overall Width: 1.188 INCHES NOMINAL IN; Overall Length: 3.500 INCHES NOMINAL IN. 4 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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