PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1639Coupler,rotary,radio Frequency

Frontgrade Technologies Inc. · NSN 5985-01-313-7839 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-313-7839 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-313-7839. Primary manufacturer part number: 1639.
Features
  • Coupler,rotary,radio Frequency — FSC 5985
  • Unit Type: WAVEGUIDE
  • Functional Description: ROTARY JOINT
  • Reference Data and Literature: 8, TI-6310.30, FA-10082, ASR-9 SYSTEM, SEC 1-11, PG 8-3
  • 4 verified cross-references
  • Primary manufacturer: Frontgrade Technologies Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupler,rotary,radio Frequency, cataloged under National Stock Number 5985-01-313-7839, 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 Frontgrade Technologies Inc.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-313-7839
Primary Part Number1639
Item NameCoupler,rotary,radio Frequency
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerFrontgrade Technologies Inc.
StatusACTIVE
Unit TypeWAVEGUIDE
Functional DescriptionROTARY JOINT
Reference Data and Literature8, TI-6310.30, FA-10082, ASR-9 SYSTEM, SEC 1-11, PG 8-3
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5340-00-042-85318233B0632-3 INTERCHANGEABLE
Standoff,threaded,spacing
Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware
5950-00-083-0681DO-T39 INTERCHANGEABLE
Transformer,audio Frequency
Shield Air Co
5330-00-251-32294001639-6 INTERCHANGEABLE
Gasket
Agco Corp Parts Opn
2805-00-271-954358010A INTERCHANGEABLE
Valve,poppet,engine
Brinkley Technology Group Llc Dba Hercules Manufacturing
5996-01-005-9519151169-01 INTERCHANGEABLE
Amplifier,direct Current
Ge Aviation Systems Llc
5325-01-076-8453WA-514 INTERCHANGEABLE
Ring,retaining
West Coast Lockwasher Co., Inc. Dba West Coast Lockwasher Co Inc Div West Coast Lockwasher
5815-01-083-9412 INTERCHANGEABLE
Guide,needle
5340-01-088-47371639 INTERCHANGEABLE
Handle,bow
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5905-01-096-36771639 INTERCHANGEABLE
Resistor
Crown Audio, Inc. Dba Crown International
8475-01-255-74901639AS100-1 INTERCHANGEABLE
Hood Assembly,anti-Exposure
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
1639 Frontgrade Technologies Inc. (USA)
1D19710H01 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
1639 Kevlin Corporation Dba Cobham Sensor Systems Div Kevlin Division (USA)
FA10082 U S Dept of Transportation Federal Aviation Administration (USA)
Related Parts
5340-00-042-8531INTERCHANGEABLE
STANDOFF,THREADED,SPACING
8233B0632-3
5950-00-083-0681INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
DO-T39
5330-00-251-3229INTERCHANGEABLE
GASKET
4001639-6
2805-00-271-9543INTERCHANGEABLE
VALVE,POPPET,ENGINE
58010A
5996-01-005-9519INTERCHANGEABLE
AMPLIFIER,DIRECT CURRENT
151169-01
5325-01-076-8453INTERCHANGEABLE
RING,RETAINING
WA-514
5815-01-083-9412INTERCHANGEABLE
GUIDE,NEEDLE
5340-01-088-4737INTERCHANGEABLE
HANDLE,BOW
1639
5905-01-096-3677INTERCHANGEABLE
RESISTOR
1639
8475-01-255-7490INTERCHANGEABLE
HOOD ASSEMBLY,ANTI-EXPOSURE
1639AS100-1
4930-01-312-6829INTERCHANGEABLE
ROLLER ASSEMBLY,HOSE REEL
1639
8115-01-624-9697INTERCHANGEABLE
DIVIDER,TRAY CHEST
1639

Frequently Asked Questions

What is NSN 5985-01-313-7839?

NSN 5985-01-313-7839 is a Coupler,rotary,radio Frequency, manufactured by Frontgrade Technologies Inc., classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-313-7839?

NSN 5985-01-313-7839 has 4 cross-referenced part numbers: 1639 (Frontgrade Technologies Inc.), 1D19710H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 1639 (Kevlin Corporation Dba Cobham Sensor Systems Div Kevlin Division), FA10082 (U S Dept of Transportation Federal Aviation Administration).

What NSN replaces 5985-01-313-7839?

There are 12 known substitutes for 5985-01-313-7839: 5340-00-042-8531, 5950-00-083-0681, 5330-00-251-3229 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1639?

Key specifications for 1639: Unit Type: WAVEGUIDE; Functional Description: ROTARY JOINT; Reference Data and Literature: 8, TI-6310.30, FA-10082, ASR-9 SYSTEM, SEC 1-11, PG 8-3; End Item Identification: AIRPORT SURVEILLANCE RADAR 9,ASR-9,CONTRACT FA-01-83-C-20027; UNIT 8, FA-10082. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com