PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51243Holder,electrical Contact Brush

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5977-00-031-2708 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-031-2708 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-031-2708. Primary manufacturer part number: 51243.
Features
  • Holder,electrical Contact Brush — FSC 5977
  • Mounting Facility: PRESS FIT
  • Overall Thickness: 0.525 INCHES NOMINAL IN
  • Brush Quantity Accommodated Per Holder: 1
  • Inside Width: 0.257 INCHES NOMINAL IN
  • Terminal Type: SOLDER LUG
  • Mounting Facility Quantity: 1
  • Inside Length: 0.484 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy Box construction
General Description

The Holder,electrical Contact Brush, cataloged under National Stock Number 5977-00-031-2708, 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 L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 10 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
NSN5977-00-031-2708
Primary Part Number51243
Item NameHolder,electrical Contact Brush
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Mounting FacilityPRESS FIT
Overall Thickness0.525 INCHES NOMINAL IN
Brush Quantity Accommodated Per Holder1
Inside Width0.257 INCHES NOMINAL IN
Terminal TypeSOLDER LUG
Mounting Facility Quantity1
Inside Length0.484 INCHES NOMINAL IN
Inside Thickness0.195 INCHES NOMINAL IN
Terminal Quantity1
MaterialCOPPER ALLOY BOX
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2940-00-007-4791325100 INTERCHANGEABLE
Filter Element,fluid
Deluxe Products Div Walker Mfg Co
5360-00-341-919351243 INTERCHANGEABLE
Spring,helical,extension
Aerol Llc
5315-01-041-614451243 INTERCHANGEABLE
Pin,spring
Elkhart Brass Manufacturing Company, Llc Div Elkhart Brass Manufacturing Company
8030-01-596-9633 INTERCHANGEABLE
Antiseize Compound
Cross-Reference Index
Part NumberManufacturer
51243 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
Related Parts
2940-00-007-4791INTERCHANGEABLE
FILTER ELEMENT,FLUID
325100
5360-00-341-9193INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
51243
5315-01-041-6144INTERCHANGEABLE
PIN,SPRING
51243
8030-01-596-9633INTERCHANGEABLE
ANTISEIZE COMPOUND

Frequently Asked Questions

What is NSN 5977-00-031-2708?

NSN 5977-00-031-2708 is a Holder,electrical Contact Brush, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-00-031-2708?

NSN 5977-00-031-2708 has 1 cross-referenced part number: 51243 (L3harris Technologies, Inc Div Space & Airborne Systems).

What NSN replaces 5977-00-031-2708?

There are 4 known substitutes for 5977-00-031-2708: 2940-00-007-4791, 5360-00-341-9193, 5315-01-041-6144 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51243?

Key specifications for 51243: Mounting Facility: PRESS FIT; Overall Thickness: 0.525 INCHES NOMINAL IN; Brush Quantity Accommodated Per Holder: 1; Inside Width: 0.257 INCHES NOMINAL IN. 12 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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