PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T2563TCirculator,radio Frequency

Teledyne Defense Electronics, Llc Dba Teledyne Microwave Solutions · NSN 5985-01-078-3681 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-078-3681 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-078-3681. Primary manufacturer part number: T2563T.
Features
  • Circulator,radio Frequency — FSC 5985
  • 3 verified cross-references
  • Primary manufacturer: Teledyne Defense Electronics, Llc Dba Teledyne Microwave Solutions
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Circulator,radio Frequency, cataloged under National Stock Number 5985-01-078-3681, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Teledyne Defense Electronics, Llc Dba Teledyne Microwave Solutions. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-078-3681
Primary Part NumberT2563T
Item NameCirculator,radio Frequency
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerTeledyne Defense Electronics, Llc Dba Teledyne Microwave Solutions
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5305-00-638-347710-86542 INTERCHANGEABLE
Screw,machine
Unison Industries Llc
4330-01-387-1574 INTERCHANGEABLE
Filter
5325-01-388-741400183 INTERCHANGEABLE
Grommet,nonmetallic
Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco
5365-01-570-399800183 INTERCHANGEABLE
Bushing Blank
Tech Products Corp
Cross-Reference Index
Part NumberManufacturer
T2563T Teledyne Defense Electronics, Llc Dba Teledyne Microwave Solutions (USA)
B1-83 Spectrum Control Inc Div Weinschel (USA)
001-83 Spectrum Control Inc Div Weinschel (USA)
Related Parts
5305-00-638-3477INTERCHANGEABLE
SCREW,MACHINE
10-86542
4330-01-387-1574INTERCHANGEABLE
FILTER
5325-01-388-7414INTERCHANGEABLE
GROMMET,NONMETALLIC
00183
5365-01-570-3998INTERCHANGEABLE
BUSHING BLANK
00183

Frequently Asked Questions

What is NSN 5985-01-078-3681?

NSN 5985-01-078-3681 is a Circulator,radio Frequency, manufactured by Teledyne Defense Electronics, Llc Dba Teledyne Microwave Solutions, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-078-3681?

NSN 5985-01-078-3681 has 3 cross-referenced part numbers: T2563T (Teledyne Defense Electronics, Llc Dba Teledyne Microwave Solutions), B1-83 (Spectrum Control Inc Div Weinschel), 001-83 (Spectrum Control Inc Div Weinschel).

What NSN replaces 5985-01-078-3681?

There are 4 known substitutes for 5985-01-078-3681: 5305-00-638-3477, 4330-01-387-1574, 5325-01-388-7414 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T2563T?

Key specifications for T2563T: Overall Length: 2.380 INCHES NOMINAL IN. 1 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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