PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

604930Holder,brush Block

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 5977-00-012-8257 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-00-012-8257 — this item is cataloged by the U.S. Government under National Stock Number 5977-00-012-8257. Primary manufacturer part number: 604930.
Features
  • Holder,brush Block — FSC 5977
  • 1 verified cross-reference
  • Primary manufacturer: Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Holder,brush Block, cataloged under National Stock Number 5977-00-012-8257, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameHolder,brush Block
FSC / FSG5977 — No Item Name Available (FSG 59)
ManufacturersNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (CAGE 06481)
Technical Specifications
ParameterValue
NSN5977-00-012-8257
Primary Part Number604930
Item NameHolder,brush Block
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
9540-01-071-3520 INTERCHANGEABLE
Beam,structural
9540-01-071-3521 INTERCHANGEABLE
Beam,structural
Cross-Reference Index
Part NumberManufacturer
604930 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
Related Parts
9540-01-071-3520INTERCHANGEABLE
BEAM,STRUCTURAL
9540-01-071-3521INTERCHANGEABLE
BEAM,STRUCTURAL

Frequently Asked Questions

What is NSN 5977-00-012-8257?

NSN 5977-00-012-8257 is a Holder,brush Block, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-00-012-8257?

NSN 5977-00-012-8257 has 1 cross-referenced part number: 604930 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).

What NSN replaces 5977-00-012-8257?

There are 2 known substitutes for 5977-00-012-8257: 9540-01-071-3520, 9540-01-071-3521. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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