PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20477Ring,retaining

Lockheed Martin Corporation · NSN 5325-01-579-6305 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-01-579-6305 — this item is cataloged by the U.S. Government under National Stock Number 5325-01-579-6305. Primary manufacturer part number: 20477.
Features
  • Ring,retaining — FSC 5325
  • 1 verified cross-reference
  • Primary manufacturer: Lockheed Martin Corporation
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Ring,retaining, cataloged under National Stock Number 5325-01-579-6305, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corporation. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-01-579-6305
Primary Part Number20477
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerLockheed Martin Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5950-00-220-993120477 INTERCHANGEABLE
Reactor
Astec America Inc.
5365-00-358-81781271748 INTERCHANGEABLE
Spacer,ring
Chrysler Realty Company Llc Dba Daimler Chrysler
5330-00-831-163020477 INTERCHANGEABLE
Seal
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
6645-01-215-060520477 INTERCHANGEABLE
Timer,interval
Cleveland Range, Llc
5950-01-413-3872446-0851-001 INTERCHANGEABLE
Transformer,pulse
The Boeing Company Div Legacy Boeing Hb1
2540-01-504-2625204-77 INTERCHANGEABLE
Regulator,vehicle Window
Crane Carrier Company, Llc
Cross-Reference Index
Part NumberManufacturer
20477 PRIMARY Lockheed Martin Corporation (USA)
Related Parts
5950-00-220-9931INTERCHANGEABLE
REACTOR
20477
5365-00-358-8178INTERCHANGEABLE
SPACER,RING
1271748
5330-00-831-1630INTERCHANGEABLE
SEAL
20477
6645-01-215-0605INTERCHANGEABLE
TIMER,INTERVAL
20477
5950-01-413-3872INTERCHANGEABLE
TRANSFORMER,PULSE
446-0851-001
2540-01-504-2625INTERCHANGEABLE
REGULATOR,VEHICLE WINDOW
204-77

Frequently Asked Questions

What is NSN 5325-01-579-6305?

NSN 5325-01-579-6305 is a Ring,retaining, manufactured by Lockheed Martin Corporation, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-01-579-6305?

NSN 5325-01-579-6305 has 1 cross-referenced part number: 20477 (Lockheed Martin Corporation).

What NSN replaces 5325-01-579-6305?

There are 6 known substitutes for 5325-01-579-6305: 5950-00-220-9931, 5365-00-358-8178, 5330-00-831-1630 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20477?

Key specifications for 20477: End Item Identification: U-2. 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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