PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A577Handset

Comdial Business Communications Corp Repair Dept · NSN 5965-00-503-2829 · FSC 5965 · No Item Name Available
Verified by PartsTable
NSN 5965-00-503-2829 — this item is cataloged by the U.S. Government under National Stock Number 5965-00-503-2829. Primary manufacturer part number: A577.
Features
  • Handset — FSC 5965
  • Earphone Element Type: MAGNETIC
  • Individual Connector Termination Type: LUG
  • Earphone Impedance Rating: 60.0 OHMS NOMINAL
  • Earphone DC Resistance Rating: 1.4 KILOHMS NOMINAL
  • Impedance Rating: 1.4 KILOHMS NOMINAL
  • DC Resistance Rating in Ohms: 60.0 NOMINAL
  • Power Source: SOUND POWERED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Handset, cataloged under National Stock Number 5965-00-503-2829, is classified within Federal Supply Class 5965 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Comdial Business Communications Corp Repair Dept. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5965-00-503-2829
Primary Part NumberA577
Item NameHandset
FSC / FSG5965 / 59 — No Item Name Available
ManufacturerComdial Business Communications Corp Repair Dept
StatusCANCELLED
Earphone Element TypeMAGNETIC
Individual Connector Termination TypeLUG
Earphone Impedance Rating60.0 OHMS NOMINAL
Earphone DC Resistance Rating1.4 KILOHMS NOMINAL
Impedance Rating1.4 KILOHMS NOMINAL
DC Resistance Rating in Ohms60.0 NOMINAL
Power SourceSOUND POWERED
Microphone Element TypeMAGNETIC
Conductor Quantity2
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5999-00-279-2020A555 INTERCHANGEABLE
Retainer,electrical Shield
Jetronic Industries, Inc. Dba Jetronic Industries, Inc. Div Contracts
1730-00-333-0148A555 INTERCHANGEABLE
Safety Shoe,ladder
Northrop Grumman Systems Corporation
5895-00-349-3850A-577 INTERCHANGEABLE
Body,primer
Essex Industries, Inc. Dba Essex Industries
5120-00-371-9576A57-7 INTERCHANGEABLE
Adapter,bushing Driver
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
4820-00-391-37822203X4 INTERCHANGEABLE
Cock,shutoff,screw Stem
Essex Brownell Inc. Div Essex Group Inc
5930-00-814-6670A5-77 INTERCHANGEABLE
Adapter,switch Actuator
Safran Power Usa, Llc
5920-00-850-6092 INTERCHANGEABLE
Fuse,cartridge
6620-00-952-9844A2771 INTERCHANGEABLE
Gage,pressure,dial Indicating
Provision, Inc. Dba Provision Inc
Cross-Reference Index
Part NumberManufacturer
A577 Comdial Business Communications Corp Repair Dept (USA)
A277-1 Comdial Business Communications Corp Repair Dept (USA)
702019-845 Dynalec Corporation (USA)
A277-1 Dynalec Corporation (USA)
A555 Comdial Business Communications Corp Repair Dept (USA)
702019-845 Comdial Business Communications Corp Repair Dept (USA)
70219-845 Comdial Business Communications Corp Repair Dept (USA)
A577 Dynalec Corporation (USA)
Related Parts
5999-00-279-2020INTERCHANGEABLE
RETAINER,ELECTRICAL SHIELD
A555
1730-00-333-0148INTERCHANGEABLE
SAFETY SHOE,LADDER
A555
5895-00-349-3850INTERCHANGEABLE
BODY,PRIMER
A-577
5120-00-371-9576INTERCHANGEABLE
ADAPTER,BUSHING DRIVER
A57-7
4820-00-391-3782INTERCHANGEABLE
COCK,SHUTOFF,SCREW STEM
2203X4
5930-00-814-6670INTERCHANGEABLE
ADAPTER,SWITCH ACTUATOR
A5-77
5920-00-850-6092INTERCHANGEABLE
FUSE,CARTRIDGE
6620-00-952-9844INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
A2771

Frequently Asked Questions

What is NSN 5965-00-503-2829?

NSN 5965-00-503-2829 is a Handset, manufactured by Comdial Business Communications Corp Repair Dept, classified under FSC 5965 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5965-00-503-2829?

NSN 5965-00-503-2829 has 8 cross-referenced part numbers: A577 (Comdial Business Communications Corp Repair Dept), A277-1 (Comdial Business Communications Corp Repair Dept), 702019-845 (Dynalec Corporation), A277-1 (Dynalec Corporation), A555 (Comdial Business Communications Corp Repair Dept) and 3 more.

What NSN replaces 5965-00-503-2829?

There are 8 known substitutes for 5965-00-503-2829: 5999-00-279-2020, 1730-00-333-0148, 5895-00-349-3850 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A577?

Key specifications for A577: Earphone Element Type: MAGNETIC; Individual Connector Termination Type: LUG; Earphone Impedance Rating: 60.0 OHMS NOMINAL; Earphone DC Resistance Rating: 1.4 KILOHMS NOMINAL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5965-00-503-2829 still in active supply?

NSN 5965-00-503-2829 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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