PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D56Brush,electrical Contact

Morganite Inc · NSN 5977-00-188-2146 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-188-2146 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-188-2146. Primary manufacturer part number: D56.
Features
  • Brush,electrical Contact — FSC 5977
  • Width: 0.250 INCHES NOMINAL IN
  • Style Designator: ONE PIECE
  • Style Designator: ONE PIECE
  • Brush Shunt Length: 1.000 INCHES NOMINAL SINGLE SHUNT IN
  • Shunt Insulation Provision and Quantity: 1 UNINSULATED
  • Length: 0.375 INCHES NOMINAL IN
  • Material: ELECTROGRAPHITIC
Applications
  • Applications requiring Electrographitic construction
General Description

The Brush,electrical Contact, cataloged under National Stock Number 5977-00-188-2146, 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 Morganite Inc. Government technical data includes 13 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5977-00-188-2146
Primary Part NumberD56
Item NameBrush,electrical Contact
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerMorganite Inc
StatusACTIVE
Width0.250 INCHES NOMINAL IN
Style DesignatorONE PIECE
Style DesignatorONE PIECE
Brush Shunt Length1.000 INCHES NOMINAL SINGLE SHUNT IN
Shunt Insulation Provision and Quantity1 UNINSULATED
Length0.375 INCHES NOMINAL IN
MaterialELECTROGRAPHITIC
Terminal Type and Quantity1 ROUND CAP
Contact Face StyleCONCAVE
MaterialELECTROGRAPHITIC
Terminal Type and Quantity1 ROUND CAP
Thickness0.156 INCHES NOMINAL IN
Body StyleRECTANGULAR COMMUTATOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4210-00-243-0863D56 INTERCHANGEABLE
Ax,pick Head
Gemtor Inc
3449-00-263-0098 INTERCHANGEABLE
Sharpening Machine,drill Steel,p
3030-00-528-3767 INTERCHANGEABLE
Belt,v
6110-01-105-661570550-02027-104 INTERCHANGEABLE
Contactor,magnetic
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
Cross-Reference Index
Part NumberManufacturer
D56 Morganite Inc (USA)
Related Parts
4210-00-243-0863INTERCHANGEABLE
AX,PICK HEAD
D56
3449-00-263-0098INTERCHANGEABLE
SHARPENING MACHINE,DRILL STEEL,P
3030-00-528-3767INTERCHANGEABLE
BELT,V
6110-01-105-6615INTERCHANGEABLE
CONTACTOR,MAGNETIC
70550-02027-104

Frequently Asked Questions

What is NSN 5977-00-188-2146?

NSN 5977-00-188-2146 is a Brush,electrical Contact, manufactured by Morganite Inc, classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-00-188-2146?

NSN 5977-00-188-2146 has 1 cross-referenced part number: D56 (Morganite Inc).

What NSN replaces 5977-00-188-2146?

There are 4 known substitutes for 5977-00-188-2146: 4210-00-243-0863, 3449-00-263-0098, 3030-00-528-3767 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D56?

Key specifications for D56: Width: 0.250 INCHES NOMINAL IN; Style Designator: ONE PIECE; Style Designator: ONE PIECE; Brush Shunt Length: 1.000 INCHES NOMINAL SINGLE SHUNT IN. 15 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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