PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2561019Ring,retaining

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5325-00-457-6959 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-457-6959 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-457-6959. Primary manufacturer part number: 2561019.
Features
  • Ring,retaining — FSC 5325
  • Major Thickness: 0.070 INCHES NOMINAL IN
  • Surface Treatment: CADMIUM
  • Material Document and Classification: QQ-B-626, ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE
  • Material: COPPER ALLOY 360
  • Usage Design: EXTERNAL
  • Cross-Sectional Shape Style: BEVELED ONE OUTSIDE CORNER
  • Outside Diameter: 0.438 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy 360 construction
General Description

The Ring,retaining, cataloged under National Stock Number 5325-00-457-6959, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5325-00-457-6959
Primary Part Number2561019
Item NameRing,retaining
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusCANCELLED
Major Thickness0.070 INCHES NOMINAL IN
Surface TreatmentCADMIUM
Material Document and ClassificationQQ-B-626, ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE
MaterialCOPPER ALLOY 360
Usage DesignEXTERNAL
Cross-Sectional Shape StyleBEVELED ONE OUTSIDE CORNER
Outside Diameter0.438 INCHES NOMINAL IN
Inside Diameter0.348 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN
Casehardening IndicatorNOT CASEHARDENED
Minor Thickness0.030 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
2930-00-211-8759896 INTERCHANGEABLE
Pump,cooling System,engine
Elgin Industries Inc. Dba
9905-00-721-8801W5-3B INTERCHANGEABLE
Sign,traffic
Federal Prison Industries, Inc - Ebg
6680-00-885-8721W53 INTERCHANGEABLE
Indicator,sight,liquid
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
5999-00-893-9129W53 INTERCHANGEABLE
Heater,thermal Release
Ward Leonard Ct Llc
4820-01-138-3062W-52 INTERCHANGEABLE
Valve and Sprinkler Unit
Wardrup Valve Co
4931-01-208-570712618149-15 INTERCHANGEABLE
Heater
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
5999-01-330-518060A1516 INTERCHANGEABLE
Heater,thermal Release
Eagle Crusher Co Inc Dba Stedman Machine Co
Cross-Reference Index
Part NumberManufacturer
2561019 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
560651 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
W52 Robinson Nugent Inc (USA)
W53 Robinson Nugent Inc (USA)
Related Parts
2930-00-211-8759INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
896
9905-00-721-8801INTERCHANGEABLE
SIGN,TRAFFIC
W5-3B
6680-00-885-8721INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
W53
5999-00-893-9129INTERCHANGEABLE
HEATER,THERMAL RELEASE
W53
4820-01-138-3062INTERCHANGEABLE
VALVE AND SPRINKLER UNIT
W-52
4931-01-208-5707INTERCHANGEABLE
HEATER
12618149-15
5999-01-330-5180INTERCHANGEABLE
HEATER,THERMAL RELEASE
60A1516

Frequently Asked Questions

What is NSN 5325-00-457-6959?

NSN 5325-00-457-6959 is a Ring,retaining, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5325 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5325-00-457-6959?

NSN 5325-00-457-6959 has 4 cross-referenced part numbers: 2561019 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 560651 (Lockheed Martin Corporation Div Rms - Mitchel Field), W52 (Robinson Nugent Inc), W53 (Robinson Nugent Inc).

What NSN replaces 5325-00-457-6959?

There are 7 known substitutes for 5325-00-457-6959: 2930-00-211-8759, 9905-00-721-8801, 6680-00-885-8721 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2561019?

Key specifications for 2561019: Major Thickness: 0.070 INCHES NOMINAL IN; Surface Treatment: CADMIUM; Material Document and Classification: QQ-B-626, ALLOY 360 FED SPEC SINGLE MATERIAL RESPONSE; Material: COPPER ALLOY 360. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5325-00-457-6959 still in active supply?

NSN 5325-00-457-6959 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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