PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

576R496H01Spark Gap

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 6625-00-778-5237 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-778-5237 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-778-5237. Primary manufacturer part number: 576R496H01.
Features
  • Spark Gap — FSC 6625
  • Gap Type: ROTARY
  • Overall Diameter: 0.620 INCHES NOMINAL IN
  • Gap Type: ROTARY
  • Overall Diameter: 0.620 INCHES NOMINAL IN
  • 3 verified cross-references
  • 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 Spark Gap, cataloged under National Stock Number 6625-00-778-5237, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 4 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-778-5237
Primary Part Number576R496H01
Item NameSpark Gap
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusACTIVE
Gap TypeROTARY
Overall Diameter0.620 INCHES NOMINAL IN
Gap TypeROTARY
Overall Diameter0.620 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeVN
Weight0.0200 lbs
Cube0.0385 cu ft
Verified Substitutes 1
5940-00-314-0479 INTERCHANGEABLE
Terminal,lug
Cross-Reference Index
Part NumberManufacturer
576R496H01 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
TG78 Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
576R496H01 Westinghouse Electric Corp (USA)
Related Parts
5940-00-314-0479INTERCHANGEABLE
TERMINAL,LUG

Frequently Asked Questions

What is NSN 6625-00-778-5237?

NSN 6625-00-778-5237 is a Spark Gap, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-778-5237?

NSN 6625-00-778-5237 has 3 cross-referenced part numbers: 576R496H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), TG78 (Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron), 576R496H01 (Westinghouse Electric Corp).

What NSN replaces 6625-00-778-5237?

There is 1 known substitute for 6625-00-778-5237: 5940-00-314-0479. Verify interchangeability with system specifications before substitution.

What are the specifications of 576R496H01?

Key specifications for 576R496H01: Overall Length: 0.832 INCHES MINIMUM AND 1.014 INCHES MAXIMUM IN; Gap Type: ROTARY; Overall Diameter: 0.620 INCHES NOMINAL IN; Overall Length: 0.832 INCHES MINIMUM AND 1.014 INCHES MAXIMUM IN. 6 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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