PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16721Ring,piston

Hexco International Dba Acd · NSN 2805-00-591-1514 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-591-1514 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-591-1514. Primary manufacturer part number: 16721.
Features
  • Ring,piston — FSC 2805
  • Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
  • Criticality Code Justification: ZZZY
  • 4 verified cross-references
  • Primary manufacturer: Hexco International Dba Acd
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ring,piston, cataloged under National Stock Number 2805-00-591-1514, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Hexco International Dba Acd. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2805-00-591-1514
Primary Part Number16721
Item NameRing,piston
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerHexco International Dba Acd
StatusACTIVE
Reference Number Differentiating CharacteristicsCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5950-00-007-6002 INTERCHANGEABLE
Transformer,power
5999-00-262-5325BAC3110-7A INTERCHANGEABLE
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5998-00-308-0148 INTERCHANGEABLE
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2530-00-495-1313220454 INTERCHANGEABLE
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5935-00-600-18891672-1 INTERCHANGEABLE
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5940-00-847-7328012-6008-479 INTERCHANGEABLE
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Itt Cannon Rf Products
4130-01-304-4951 INTERCHANGEABLE
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7920-01-323-079316721 INTERCHANGEABLE
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5305-01-388-689016721 INTERCHANGEABLE
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Cross-Reference Index
Part NumberManufacturer
16721 Hexco International Dba Acd (USA)
16721-1CP Naval Inventory Control Point Mechanicsburg (USA)
16721CP Naval Inventory Control Point Mechanicsburg (USA)
16721-1 Hexco International Dba Acd (USA)
Related Parts
5950-00-007-6002INTERCHANGEABLE
TRANSFORMER,POWER
5999-00-262-5325INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
BAC3110-7A
5998-00-308-0148INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
2530-00-495-1313INTERCHANGEABLE
CHAMBER,AIR BRAKE
220454
5935-00-600-1889INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
1672-1
5940-00-847-7328INTERCHANGEABLE
TERMINAL,STUD
012-6008-479
4130-01-304-4951INTERCHANGEABLE
COOLER UNIT,AIR
7920-01-323-0793INTERCHANGEABLE
SCRAPER,VEHICLE WINDOW
16721
5305-01-388-6890INTERCHANGEABLE
SCREW,MACHINE
16721
4240-01-713-5290INTERCHANGEABLE
SHOULDER CAPE
16-721

Frequently Asked Questions

What is NSN 2805-00-591-1514?

NSN 2805-00-591-1514 is a Ring,piston, manufactured by Hexco International Dba Acd, classified under FSC 2805 (No Item Name Available). Status: active.

What are the part numbers for NSN 2805-00-591-1514?

NSN 2805-00-591-1514 has 4 cross-referenced part numbers: 16721 (Hexco International Dba Acd), 16721-1CP (Naval Inventory Control Point Mechanicsburg), 16721CP (Naval Inventory Control Point Mechanicsburg), 16721-1 (Hexco International Dba Acd).

What NSN replaces 2805-00-591-1514?

There are 10 known substitutes for 2805-00-591-1514: 5950-00-007-6002, 5999-00-262-5325, 5998-00-308-0148 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 16721?

Key specifications for 16721: Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D; Criticality Code Justification: ZZZY. 2 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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