PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

203691Ring,retaining

Drs Environmental Systems Inc · NSN 5325-00-803-8516 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-803-8516 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-803-8516. Primary manufacturer part number: 203691.
Features
  • Ring,retaining — FSC 5325
  • 39 verified cross-references
  • Primary manufacturer: Drs Environmental Systems Inc
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-803-8516, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Drs Environmental Systems Inc. This item has 39 commercial cross-references from 27 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameRing,retaining
FSC / FSG5325 — No Item Name Available (FSG 53)
ManufacturersDrs Environmental Systems Inc (CAGE 5RQL2); Kidde-Fenwal, Llc (CAGE 0KDP7); Truarc Company Llc Dba Waldes Truarc (CAGE 79136); Naval Ship Systems Command (CAGE 80064); Westinghouse Electric Corp (CAGE 79500)
Technical Specifications
ParameterValue
NSN5325-00-803-8516
Primary Part Number203691
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerDrs Environmental Systems Inc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2920-00-112-8048101BMP-299-1 INTERCHANGEABLE
Drive,engine,electrical Starter
Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division
5330-00-285-134665X549 INTERCHANGEABLE
Seal,plain Encased
Garlock Sealing Technologies Llc Dba Garlock Sealing Technologies Llc
1610-00-305-5329500050 INTERCHANGEABLE
Spacer Assy
Hamilton Sundstrand Corporation Dba Collins Aerospace
3120-00-350-3947200855 INTERCHANGEABLE
Bearing,sleeve
Renk America Llc Div Renk America
5935-00-590-21822609677-2 INTERCHANGEABLE
Connector,receptacle,electrical
Alliant Techsystems Operations Llc Div Defense Electronic Systems
1650-00-673-342320369-1 INTERCHANGEABLE
Cooler,hydraulic Oil,aircraft
Triumph Thermal Systems - Maryland, Inc.
1560-00-738-4858500050 INTERCHANGEABLE
Muffler Air Duct Ai
Arrowhead Products Corp
5325-00-804-9743 INTERCHANGEABLE
Ring,retaining
6625-00-902-2596757-104 INTERCHANGEABLE
Meter,electrical Frequency
American Instrument Corp
1660-01-011-3265185848-6 INTERCHANGEABLE
Separator,water,aircraft Air Con
Honeywell International Inc. Div Aerospace - Torrance
Cross-Reference Index
Part NumberManufacturer
203691 Drs Environmental Systems Inc (USA)
203691 Kidde-Fenwal, Llc (USA)
N5000-50 Truarc Company Llc Dba Waldes Truarc (USA)
4700-3112615REVBPCNAS50-50 Naval Ship Systems Command (USA)
14G316-306 Westinghouse Electric Corp (USA)
42R2054-15 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
74977 Raytheon Technical Services Company (USA)
311283 Stewart-Warner Alemite Corp (USA)
51X21 Haldex Brake Products Corporation (USA)
547820REVAPCNAS50-50 Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div (USA)
547820REVBPCNAS 50-50 Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA)
547820REVBPCNAS50-50 Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div (USA)
547820REVAPCNAS 50-50 Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA)
554454PC2 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
42-R-2054-15 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
50-50 National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
MS16625-50 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
547820REVAPCNAS50-50 Bendix Corp the (USA)
5000-50 Woodward, Inc. Div Fuel Systems and Controls (USA)
547820REVBPCNAS50-50 Bendix Corp the (USA)
Related Parts
2920-00-112-8048INTERCHANGEABLE
DRIVE,ENGINE,ELECTRICAL STARTER
101BMP-299-1
5330-00-285-1346INTERCHANGEABLE
SEAL,PLAIN ENCASED
65X549
1610-00-305-5329INTERCHANGEABLE
SPACER ASSY
500050
3120-00-350-3947INTERCHANGEABLE
BEARING,SLEEVE
200855
5935-00-590-2182INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2609677-2
1650-00-673-3423INTERCHANGEABLE
COOLER,HYDRAULIC OIL,AIRCRAFT
20369-1
1560-00-738-4858INTERCHANGEABLE
MUFFLER AIR DUCT AI
500050
5325-00-804-9743INTERCHANGEABLE
RING,RETAINING
6625-00-902-2596INTERCHANGEABLE
METER,ELECTRICAL FREQUENCY
757-104
1660-01-011-3265INTERCHANGEABLE
SEPARATOR,WATER,AIRCRAFT AIR CON
185848-6
4720-01-299-5983INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
FK6038RUU6000
4220-01-559-5540INTERCHANGEABLE
HELMET,DEEP-SEA DIVER'S
500-050

Frequently Asked Questions

What is NSN 5325-00-803-8516?

NSN 5325-00-803-8516 is a Ring,retaining, manufactured by Drs Environmental Systems Inc, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-803-8516?

NSN 5325-00-803-8516 has 39 cross-referenced part numbers: 203691 (Drs Environmental Systems Inc), 203691 (Kidde-Fenwal, Llc), N5000-50 (Truarc Company Llc Dba Waldes Truarc), 4700-3112615REVBPCNAS50-50 (Naval Ship Systems Command), 14G316-306 (Westinghouse Electric Corp) and 34 more.

What NSN replaces 5325-00-803-8516?

There are 12 known substitutes for 5325-00-803-8516: 2920-00-112-8048, 5330-00-285-1346, 1610-00-305-5329 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 5325-00-803-8516 still in active supply?

NSN 5325-00-803-8516 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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