PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S3801-653721ITEM4Brush,electrical Contact

Naval Ship Systems Command · NSN 5977-00-033-3678 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-033-3678 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-033-3678. Primary manufacturer part number: S3801-653721ITEM4.
Features
  • Brush,electrical Contact — FSC 5977
  • Width: 0.500 INCHES NOMINAL IN
  • Radius: 1.219 INCHES NOMINAL IN
  • Length: 0.875 INCHES NOMINAL IN
  • Largest Outside Diameter: 0.350 INCHES NOMINAL IN
  • Terminal Type and Quantity: 1 STRAIGHT W/HOLE
  • Style Designator: ONE PIECE
  • Pressure Spring Type and Quantity: 1 CYLINDRICAL
Applications
  • Applications requiring Electrographitic construction
General Description

The Brush,electrical Contact, cataloged under National Stock Number 5977-00-033-3678, 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 Naval Ship Systems Command. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, 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
NSN5977-00-033-3678
Primary Part NumberS3801-653721ITEM4
Item NameBrush,electrical Contact
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Width0.500 INCHES NOMINAL IN
Radius1.219 INCHES NOMINAL IN
Length0.875 INCHES NOMINAL IN
Largest Outside Diameter0.350 INCHES NOMINAL IN
Terminal Type and Quantity1 STRAIGHT W/HOLE
Style DesignatorONE PIECE
Pressure Spring Type and Quantity1 CYLINDRICAL
MaterialELECTROGRAPHITIC
Material Document and ClassificationCARBON ENGINEERING CORP,GRADE A MFR REF SINGLE MATERIAL RESPONSE
Body StyleRECTANGULAR COMMUTATOR
Thickness0.375 INCHES NOMINAL IN
Shunt Position Designator5
Brush Shunt Length3.750 INCHES NOMINAL SINGLE SHUNT IN
Spring Free Length2.000 INCHES NOMINAL IN
Contact Face StyleCONCAVE
Terminal Hole Diameter0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5945-01-112-6313 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
AA55A Eaton Corp Industrial Drives Opns Kenosha Div Gladstone Plant (USA)
STB25 Eaton Corp Industrial Drives Opns Kenosha Div Gladstone Plant (USA)
S3801-653721ITEM4 PRIMARY Naval Ship Systems Command (USA)
H5977-033-3678 Naval Sea Systems Command Logistics Support Engineering Activity (USA)
Related Parts
5945-01-112-6313INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5977-00-033-3678?

NSN 5977-00-033-3678 is a Brush,electrical Contact, manufactured by Naval Ship Systems Command, classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-00-033-3678?

NSN 5977-00-033-3678 has 4 cross-referenced part numbers: AA55A (Eaton Corp Industrial Drives Opns Kenosha Div Gladstone Plant), STB25 (Eaton Corp Industrial Drives Opns Kenosha Div Gladstone Plant), S3801-653721ITEM4 (Naval Ship Systems Command), H5977-033-3678 (Naval Sea Systems Command Logistics Support Engineering Activity).

What NSN replaces 5977-00-033-3678?

There is 1 known substitute for 5977-00-033-3678: 5945-01-112-6313. Verify interchangeability with system specifications before substitution.

What are the specifications of S3801-653721ITEM4?

Key specifications for S3801-653721ITEM4: Width: 0.500 INCHES NOMINAL IN; Radius: 1.219 INCHES NOMINAL IN; Length: 0.875 INCHES NOMINAL IN; Largest Outside Diameter: 0.350 INCHES NOMINAL IN. 17 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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