PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4630-4Brush,electrical Contact

Ward Leonard Ct Llc · NSN 5977-00-308-0687 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-308-0687 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-308-0687. Primary manufacturer part number: 4630-4.
Features
  • Brush,electrical Contact — FSC 5977
  • Material: CARBON
  • Distance From Center of Hole to Outside Edge: 0.406 INCHES NOMINAL IN
  • Body Style: RECTANGULAR COMMUTATOR
  • Top Style: FLAT
  • Width: 0.875 INCHES NOMINAL IN
  • Basic Shape Style: UNTHREADED SINGLE THROUGH HOLE
  • Hole Diameter: 0.152 INCHES NOMINAL IN
Applications
  • Applications requiring Carbon construction
General Description

The Brush,electrical Contact, cataloged under National Stock Number 5977-00-308-0687, 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 Ward Leonard Ct Llc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5977-00-308-0687
Primary Part Number4630-4
Item NameBrush,electrical Contact
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerWard Leonard Ct Llc
StatusCANCELLED
MaterialCARBON
Distance From Center of Hole to Outside Edge0.406 INCHES NOMINAL IN
Body StyleRECTANGULAR COMMUTATOR
Top StyleFLAT
Width0.875 INCHES NOMINAL IN
Basic Shape StyleUNTHREADED SINGLE THROUGH HOLE
Hole Diameter0.152 INCHES NOMINAL IN
Thickness0.250 INCHES NOMINAL IN
Length0.675 INCHES NOMINAL IN
Distance From Brush Top to Hole Centerline0.156 INCHES NOMINAL IN
Contact Face StyleFLAT
Style DesignatorONE PIECE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4820-01-286-9743463-04 INTERCHANGEABLE
Cap,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5330-01-291-507146300 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
2925-01-423-4962 INTERCHANGEABLE
Rotor,generator
5120-01-429-655400946304000 INTERCHANGEABLE
Wrench Set,socket
Sears, Roebuck and Co. Dba Sears Div Sears Commercial
6515-01-451-195246304 INTERCHANGEABLE
Calf Skin
Bioskin, Llc
7125-01-662-9284 INTERCHANGEABLE
Cabinet,storage
Cross-Reference Index
Part NumberManufacturer
MB-1912 Morganite Inc (USA)
4630-4 PRIMARY Ward Leonard Ct Llc (USA)
Related Parts
4820-01-286-9743INTERCHANGEABLE
CAP,VALVE
463-04
5330-01-291-5071INTERCHANGEABLE
SEAL,PLAIN ENCASED
46300
2925-01-423-4962INTERCHANGEABLE
ROTOR,GENERATOR
5120-01-429-6554INTERCHANGEABLE
WRENCH SET,SOCKET
00946304000
6515-01-451-1952INTERCHANGEABLE
CALF SKIN
46304
7125-01-662-9284INTERCHANGEABLE
CABINET,STORAGE

Frequently Asked Questions

What is NSN 5977-00-308-0687?

NSN 5977-00-308-0687 is a Brush,electrical Contact, manufactured by Ward Leonard Ct Llc, classified under FSC 5977 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5977-00-308-0687?

NSN 5977-00-308-0687 has 2 cross-referenced part numbers: MB-1912 (Morganite Inc), 4630-4 (Ward Leonard Ct Llc).

What NSN replaces 5977-00-308-0687?

There are 6 known substitutes for 5977-00-308-0687: 4820-01-286-9743, 5330-01-291-5071, 2925-01-423-4962 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4630-4?

Key specifications for 4630-4: Material: CARBON; Distance From Center of Hole to Outside Edge: 0.406 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Top Style: FLAT. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5977-00-308-0687 still in active supply?

NSN 5977-00-308-0687 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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