PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

252905-1Brush,electrical Contact

Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin · NSN 5977-00-247-5358 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-247-5358 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-247-5358. Primary manufacturer part number: 252905-1.
Features
  • Brush,electrical Contact — FSC 5977
  • Radius: 0.484 INCHES NOMINAL IN
  • Head Length: 0.094 INCHES NOMINAL IN
  • Style Designator: ONE PIECE
  • Largest Outside Diameter: 0.200 INCHES NOMINAL IN
  • Spring Free Length: 1.438 INCHES NOMINAL IN
  • Terminal Type and Quantity: 1 ROUND CAP W/EARS
  • Contact Face Style: CONCAVE
Applications
  • Applications requiring Graphite construction
General Description

The Brush,electrical Contact, cataloged under National Stock Number 5977-00-247-5358, 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 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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
NSN5977-00-247-5358
Primary Part Number252905-1
Item NameBrush,electrical Contact
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin
StatusCANCELLED
Radius0.484 INCHES NOMINAL IN
Head Length0.094 INCHES NOMINAL IN
Style DesignatorONE PIECE
Largest Outside Diameter0.200 INCHES NOMINAL IN
Spring Free Length1.438 INCHES NOMINAL IN
Terminal Type and Quantity1 ROUND CAP W/EARS
Contact Face StyleCONCAVE
Length0.656 INCHES NOMINAL IN
Brush Shunt Length1.343 INCHES NOMINAL SINGLE SHUNT IN
Head Diameter0.172 INCHES NOMINAL IN
Material Document and ClassificationPURE CARBON CO,GR 38G MFR REF SINGLE MATERIAL RESPONSE G
Pressure Spring Type and Quantity1 CYLINDRICAL
MaterialGRAPHITE
Shunt Insulation Provision and Quantity1 UNINSULATED
Shunt Position Designator5
Width0.275 INCHES NOMINAL IN
Thickness0.125 INCHES NOMINAL IN
Top StyleCYLINDRICAL HEAD
Body StyleRECTANGULAR COMMUTATOR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5110-00-045-6207 INTERCHANGEABLE
Blade,rasp
5945-00-284-3107 INTERCHANGEABLE
Relay,electromagnetic
2990-00-778-00313866266 INTERCHANGEABLE
Muffler,exhaust
General Motors Llc Dba General Motors Llc
4730-00-843-046321293 INTERCHANGEABLE
Plug,pipe
Prestolite Electric Inc
6520-00-935-7254CD89/92 INTERCHANGEABLE
Carver,dental
Hu-Friedy Mfg. Co., Llc
5998-01-098-824421293 INTERCHANGEABLE
Circuit Card Assembly
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5955-01-327-9195627638 INTERCHANGEABLE
Oscillator,crystal Controlled
Raytheon Company
4930-01-528-956421294 INTERCHANGEABLE
Damper Arm
Gaylord Marine Services, Inc.
Cross-Reference Index
Part NumberManufacturer
252905-1 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
252905-2 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
2-1293 Titan Corp the (USA)
2-1294 Titan Corp the (USA)
881931-1 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
881930-2 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
Related Parts
5110-00-045-6207INTERCHANGEABLE
BLADE,RASP
5945-00-284-3107INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
2990-00-778-0031INTERCHANGEABLE
MUFFLER,EXHAUST
3866266
4730-00-843-0463INTERCHANGEABLE
PLUG,PIPE
21293
6520-00-935-7254INTERCHANGEABLE
CARVER,DENTAL
CD89/92
5998-01-098-8244INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
21293
5955-01-327-9195INTERCHANGEABLE
OSCILLATOR,CRYSTAL CONTROLLED
627638
4930-01-528-9564INTERCHANGEABLE
DAMPER ARM
21294

Frequently Asked Questions

What is NSN 5977-00-247-5358?

NSN 5977-00-247-5358 is a Brush,electrical Contact, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin, classified under FSC 5977 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5977-00-247-5358?

NSN 5977-00-247-5358 has 6 cross-referenced part numbers: 252905-1 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 252905-2 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 2-1293 (Titan Corp the), 2-1294 (Titan Corp the), 881931-1 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin) and 1 more.

What NSN replaces 5977-00-247-5358?

There are 8 known substitutes for 5977-00-247-5358: 5110-00-045-6207, 5945-00-284-3107, 2990-00-778-0031 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 252905-1?

Key specifications for 252905-1: Radius: 0.484 INCHES NOMINAL IN; Head Length: 0.094 INCHES NOMINAL IN; Style Designator: ONE PIECE; Largest Outside Diameter: 0.200 INCHES NOMINAL IN. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5977-00-247-5358 still in active supply?

NSN 5977-00-247-5358 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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