PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

501-4675792 ITEM 7Gear,spur

Naval Ship Systems Command · NSN 3020-01-192-4639 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-192-4639 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-192-4639. Primary manufacturer part number: 501-4675792 ITEM 7.
Features
  • Gear,spur — FSC 3020
  • Material: NICKEL ALLOY 400 OVERALL
  • Pitch Diameter: 4.0000 INCHES NOMINAL IN
  • Teeth Quantity: 24
  • Material Document and Classification: QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Pressure Angle: 20.0000 DEGREES
  • 3 verified cross-references
  • Primary manufacturer: Naval Ship Systems Command
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Nickel Alloy 400 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-01-192-4639, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-192-4639
Primary Part Number501-4675792 ITEM 7
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
MaterialNICKEL ALLOY 400 OVERALL
Pitch Diameter4.0000 INCHES NOMINAL IN
Teeth Quantity24
Material Document and ClassificationQQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Pressure Angle20.0000 DEGREES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-01-103-3326501-4675792 ITEM 34 INTERCHANGEABLE
Band,valve
Naval Ship Systems Command
4820-01-137-4631501-4675792 ITEM 8 INTERCHANGEABLE
Stop Plate,valve
Naval Ship Systems Command
4820-01-137-4632501-4675792 ITEM 16 INTERCHANGEABLE
Support,valve
Naval Ship Systems Command
4820-01-137-5926501-4675792 ITEM 23 INTERCHANGEABLE
Rack Support,valve
Naval Ship Systems Command
3040-01-154-81134675792-0012 INTERCHANGEABLE
Connecting Link,rigid
Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-154-8125501-4675792 ITEM 1 INTERCHANGEABLE
Stem,fluid Valve
Naval Ship Systems Command
4820-01-154-812687643-9804 ITEM 2 INTERCHANGEABLE
Stem,fluid Valve
Electric Boat Corporation Div General Dynamics Electric Boat
3020-01-154-975187643-9804 ITEM 14 INTERCHANGEABLE
Lock Plate,gear
Electric Boat Corporation Div General Dynamics Electric Boat
5340-01-173-4600501-4675792 ITEM 17 INTERCHANGEABLE
Cover,access
Naval Ship Systems Command
4820-01-175-7727501-4675792 ITEM 15 INTERCHANGEABLE
Stop,valve
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
501-4675792 ITEM 7 PRIMARY Naval Ship Systems Command (USA)
87643-9804 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
501-4675792 Naval Ship Systems Command (USA)
Related Parts
4820-01-103-3326INTERCHANGEABLE
BAND,VALVE
501-4675792 ITEM 34
4820-01-137-4631INTERCHANGEABLE
STOP PLATE,VALVE
501-4675792 ITEM 8
4820-01-137-4632INTERCHANGEABLE
SUPPORT,VALVE
501-4675792 ITEM 16
4820-01-137-5926INTERCHANGEABLE
RACK SUPPORT,VALVE
501-4675792 ITEM 23
3040-01-154-8113INTERCHANGEABLE
CONNECTING LINK,RIGID
4675792-0012
4820-01-154-8125INTERCHANGEABLE
STEM,FLUID VALVE
501-4675792 ITEM 1
4820-01-154-8126INTERCHANGEABLE
STEM,FLUID VALVE
87643-9804 ITEM 2
3020-01-154-9751INTERCHANGEABLE
LOCK PLATE,GEAR
87643-9804 ITEM 14
5340-01-173-4600INTERCHANGEABLE
COVER,ACCESS
501-4675792 ITEM 17
4820-01-175-7727INTERCHANGEABLE
STOP,VALVE
501-4675792 ITEM 15
4820-01-191-6572INTERCHANGEABLE
RACK,VALVE
501-4675792 ITEM 5
3020-01-191-6675INTERCHANGEABLE
GEAR,SPUR
4675792-0006

Frequently Asked Questions

What is NSN 3020-01-192-4639?

NSN 3020-01-192-4639 is a Gear,spur, manufactured by Naval Ship Systems Command, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-192-4639?

NSN 3020-01-192-4639 has 3 cross-referenced part numbers: 501-4675792 ITEM 7 (Naval Ship Systems Command), 87643-9804 (Electric Boat Corporation Div General Dynamics Electric Boat), 501-4675792 (Naval Ship Systems Command).

What NSN replaces 3020-01-192-4639?

There are 12 known substitutes for 3020-01-192-4639: 4820-01-103-3326, 4820-01-137-4631, 4820-01-137-4632 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 501-4675792 ITEM 7?

Key specifications for 501-4675792 ITEM 7: Material: NICKEL ALLOY 400 OVERALL; Pitch Diameter: 4.0000 INCHES NOMINAL IN; Teeth Quantity: 24; Material Document and Classification: QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 5 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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