PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

78403Brush,electrical Contact

Telemechanics Inc · NSN 5977-00-391-9791 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-391-9791 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-391-9791. Primary manufacturer part number: 78403.
Features
  • Brush,electrical Contact — FSC 5977
  • Head Diameter: 0.123 INCHES NOMINAL IN
  • Contact Face Style: FLAT
  • Style Designator: ONE PIECE
  • Head Length: 0.062 INCHES NOMINAL IN
  • Body Style: CYLINDRICAL
  • Diameter: 0.272 INCHES NOMINAL IN
  • Length: 0.257 INCHES NOMINAL IN
Applications
  • Applications requiring Carbon construction
General Description

The Brush,electrical Contact, cataloged under National Stock Number 5977-00-391-9791, 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 Telemechanics Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5977-00-391-9791
Primary Part Number78403
Item NameBrush,electrical Contact
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerTelemechanics Inc
StatusACTIVE
Head Diameter0.123 INCHES NOMINAL IN
Contact Face StyleFLAT
Style DesignatorONE PIECE
Head Length0.062 INCHES NOMINAL IN
Body StyleCYLINDRICAL
Diameter0.272 INCHES NOMINAL IN
Length0.257 INCHES NOMINAL IN
MaterialCARBON
Top StyleCYLINDRICAL HEAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5120-00-180-0907403 INTERCHANGEABLE
Clamp,c
Diecraft Inc
5977-00-230-6036 INTERCHANGEABLE
Brush,electrical Contact
5325-00-281-864391-BS-78403-1E INTERCHANGEABLE
Socket,turnbutton Fastener
Morito Scovill Americas, Llc Dba Scovill Manufacturing
6625-00-827-679878403 INTERCHANGEABLE
Ammeter
Komatsu America Corporation
2920-01-078-5769SAW-10785769 INTERCHANGEABLE
Cover,capacitor,gen
Southern Automotive Wholesalers, Inc
4730-01-367-743178403 INTERCHANGEABLE
Elbow,pipe to Tube
DP Manufacturing Inc.
6240-01-505-742478403 INTERCHANGEABLE
Lamp,fluorescent
Hella Inc
Cross-Reference Index
Part NumberManufacturer
78403 At and T Corp (USA)
78403 American Telephone and Telegraph Co (USA)
78403 PRIMARY Telemechanics Inc (USA)
Related Parts
5120-00-180-0907INTERCHANGEABLE
CLAMP,C
403
5977-00-230-6036INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
5325-00-281-8643INTERCHANGEABLE
SOCKET,TURNBUTTON FASTENER
91-BS-78403-1E
6625-00-827-6798INTERCHANGEABLE
AMMETER
78403
2920-01-078-5769INTERCHANGEABLE
COVER,CAPACITOR,GEN
SAW-10785769
4730-01-367-7431INTERCHANGEABLE
ELBOW,PIPE TO TUBE
78403
6240-01-505-7424INTERCHANGEABLE
LAMP,FLUORESCENT
78403

Frequently Asked Questions

What is NSN 5977-00-391-9791?

NSN 5977-00-391-9791 is a Brush,electrical Contact, manufactured by Telemechanics Inc, classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-00-391-9791?

NSN 5977-00-391-9791 has 3 cross-referenced part numbers: 78403 (At and T Corp), 78403 (American Telephone and Telegraph Co), 78403 (Telemechanics Inc).

What NSN replaces 5977-00-391-9791?

There are 7 known substitutes for 5977-00-391-9791: 5120-00-180-0907, 5977-00-230-6036, 5325-00-281-8643 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 78403?

Key specifications for 78403: Head Diameter: 0.123 INCHES NOMINAL IN; Contact Face Style: FLAT; Style Designator: ONE PIECE; Head Length: 0.062 INCHES NOMINAL IN. 9 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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