PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A5204Holder,electrical Contact Brush

Zenith Radio Corp of Iowa · NSN 5977-00-238-6807 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-238-6807 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-238-6807. Primary manufacturer part number: A5204.
Features
  • Holder,electrical Contact Brush — FSC 5977
  • Thread Size and Series/type Designator: 0.438-27 UNS
  • Top Thread Location: EXTERNAL
  • Inside Length: 0.968 INCHES NOMINAL IN
  • Inside Width: 0.309 INCHES NOMINAL IN
  • Terminal Type: SCREW
  • Inside Thickness: 0.190 INCHES NOMINAL IN
  • Overall Thickness: 1.312 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy Box construction
General Description

The Holder,electrical Contact Brush, cataloged under National Stock Number 5977-00-238-6807, is classified within Federal Supply Class 5977 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Zenith Radio Corp of Iowa. Government technical data includes 12 verified specifications, 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5977-00-238-6807
Primary Part NumberA5204
Item NameHolder,electrical Contact Brush
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerZenith Radio Corp of Iowa
StatusACTIVE
Thread Size and Series/type Designator0.438-27 UNS
Top Thread LocationEXTERNAL
Inside Length0.968 INCHES NOMINAL IN
Inside Width0.309 INCHES NOMINAL IN
Terminal TypeSCREW
Inside Thickness0.190 INCHES NOMINAL IN
Overall Thickness1.312 INCHES NOMINAL IN
Mounting Facility Quantity1
Mounting FacilitySETSCREW
Thread Length0.156 INCHES NOMINAL IN
Terminal Quantity1
MaterialCOPPER ALLOY BOX
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
3110-00-834-96185204SBKB1-06A19A14S0000-0 INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
5330-01-274-5721A5204 INTERCHANGEABLE
Seal,nonmetallic Special Shaped
Parker Hannifin Corporation Div O-Ring Division
Cross-Reference Index
Part NumberManufacturer
A5204 Zenith Radio Corp of Iowa (USA)
Related Parts
3110-00-834-9618INTERCHANGEABLE
BEARING,BALL,ANNULAR
5204SBKB1-06A19A14S0000-0
5330-01-274-5721INTERCHANGEABLE
SEAL,NONMETALLIC SPECIAL SHAPED
A5204

Frequently Asked Questions

What is NSN 5977-00-238-6807?

NSN 5977-00-238-6807 is a Holder,electrical Contact Brush, manufactured by Zenith Radio Corp of Iowa, classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-00-238-6807?

NSN 5977-00-238-6807 has 1 cross-referenced part number: A5204 (Zenith Radio Corp of Iowa).

What NSN replaces 5977-00-238-6807?

There are 2 known substitutes for 5977-00-238-6807: 3110-00-834-9618, 5330-01-274-5721. Verify interchangeability with system specifications before substitution.

What are the specifications of A5204?

Key specifications for A5204: Thread Size and Series/type Designator: 0.438-27 UNS; Top Thread Location: EXTERNAL; Inside Length: 0.968 INCHES NOMINAL IN; Overall Width: 0.623 INCHES NOMINAL IN. 14 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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