PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

203839Packing Nut

Marine Electric Systems Inc · NSN 4730-01-568-0604 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-568-0604 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-568-0604. Primary manufacturer part number: 203839.
Features
  • Packing Nut — FSC 4730
  • 1 verified cross-reference
  • Primary manufacturer: Marine Electric Systems Inc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Packing Nut, cataloged under National Stock Number 4730-01-568-0604, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Marine Electric Systems Inc. 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.

Technical Specifications
ParameterValue
NSN4730-01-568-0604
Primary Part Number203839
Item NamePacking Nut
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMarine Electric Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-00-822-085333351 INTERCHANGEABLE
Transformer,power
Freed Transformer Co
3010-01-306-6090203839 INTERCHANGEABLE
Plate,rotation
Eaton Corporation Dba Airflex Div Div Airflex
Cross-Reference Index
Part NumberManufacturer
203839 PRIMARY Marine Electric Systems Inc (USA)
Related Parts
5950-00-822-0853INTERCHANGEABLE
TRANSFORMER,POWER
33351
3010-01-306-6090INTERCHANGEABLE
PLATE,ROTATION
203839

Frequently Asked Questions

What is NSN 4730-01-568-0604?

NSN 4730-01-568-0604 is a Packing Nut, manufactured by Marine Electric Systems Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-568-0604?

NSN 4730-01-568-0604 has 1 cross-referenced part number: 203839 (Marine Electric Systems Inc).

What NSN replaces 4730-01-568-0604?

There are 2 known substitutes for 4730-01-568-0604: 5950-00-822-0853, 3010-01-306-6090. Verify interchangeability with system specifications before substitution.

What are the specifications of 203839?

Key specifications for 203839: Part Name Assigned by Controlling Agency: PACKING NUT. 1 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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