PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

52866Retainer,packing

Defense Maritime Solutions, Inc. · NSN 5330-00-500-1789 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-00-500-1789 — this item is cataloged by the U.S. Government under National Stock Number 5330-00-500-1789. Primary manufacturer part number: 52866.
Features
  • Retainer,packing — FSC 5330
  • Cross-Sectional Shape Style: SQUARE
  • Material Document and Classification: MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Angle: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
  • Joint Type: SCARF-BUTT RETAINER
  • Peripheral Diameter: 29.459 INCHES MINIMUM AND 29.493 INCHES MAXIMUM IN
  • Center Hole Diameter: 28.985 INCHES MINIMUM AND 29.015 INCHES MAXIMUM IN
  • Cross-Sectional Thickness: 0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
Applications
  • Applications requiring Plastic Polytetrafluoroethylene Overall construction
General Description

The Retainer,packing, cataloged under National Stock Number 5330-00-500-1789, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Defense Maritime Solutions, Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5330-00-500-1789
Primary Part Number52866
Item NameRetainer,packing
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerDefense Maritime Solutions, Inc.
StatusACTIVE
Cross-Sectional Shape StyleSQUARE
Material Document and ClassificationMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Angle25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
Joint TypeSCARF-BUTT RETAINER
Peripheral Diameter29.459 INCHES MINIMUM AND 29.493 INCHES MAXIMUM IN
Center Hole Diameter28.985 INCHES MINIMUM AND 29.015 INCHES MAXIMUM IN
Cross-Sectional Thickness0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
Cross-Sectional Height0.237 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN
Distance Between Ends0.188 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
MaterialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
4730-00-595-2572SAE J246 8-8 120202BA INTERCHANGEABLE
Elbow,pipe to Tube
Sae International Dba Sae International
5815-00-650-4392 INTERCHANGEABLE
Bracket
5210-00-755-6872667-28 INTERCHANGEABLE
Blade,thickness Gage
L.s. Starrett Company (the) Div Tool Division
2590-01-530-2606 INTERCHANGEABLE
Handrail
Cross-Reference Index
Part NumberManufacturer
A52866 Wartsila Lips Inc (USA)
52840PC9 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
A52866 Eaton Corporation Dba Eaton Inoac Div Eaton (USA)
A52866 Defense Maritime Solutions, Inc. (USA)
52866 PRIMARY Defense Maritime Solutions, Inc. (USA)
Related Parts
4730-00-595-2572INTERCHANGEABLE
ELBOW,PIPE TO TUBE
SAE J246 8-8 120202BA
5815-00-650-4392INTERCHANGEABLE
BRACKET
5210-00-755-6872INTERCHANGEABLE
BLADE,THICKNESS GAGE
667-28
2590-01-530-2606INTERCHANGEABLE
HANDRAIL

Frequently Asked Questions

What is NSN 5330-00-500-1789?

NSN 5330-00-500-1789 is a Retainer,packing, manufactured by Defense Maritime Solutions, Inc., classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-00-500-1789?

NSN 5330-00-500-1789 has 5 cross-referenced part numbers: A52866 (Wartsila Lips Inc), 52840PC9 (Huntington Ingalls Inc Div Newport News Shipbuilding), A52866 (Eaton Corporation Dba Eaton Inoac Div Eaton), A52866 (Defense Maritime Solutions, Inc.), 52866 (Defense Maritime Solutions, Inc.).

What NSN replaces 5330-00-500-1789?

There are 4 known substitutes for 5330-00-500-1789: 4730-00-595-2572, 5815-00-650-4392, 5210-00-755-6872 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 52866?

Key specifications for 52866: Cross-Sectional Shape Style: SQUARE; Material Document and Classification: MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Angle: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM; Joint Type: SCARF-BUTT RETAINER. 10 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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