PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21117Ring,wearing

Rolls-Royce Marine A/s Dep. Engines-Bergen · NSN 4320-01-303-6402 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-303-6402 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-303-6402. Primary manufacturer part number: 21117.
Features
  • Ring,wearing — FSC 4320
  • 8 verified cross-references
  • Primary manufacturer: Rolls-Royce Marine A/s Dep. Engines-Bergen
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Ring,wearing, cataloged under National Stock Number 4320-01-303-6402, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Rolls-Royce Marine A/s Dep. Engines-Bergen. This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRing,wearing
FSC / FSG4320 — No Item Name Available (FSG 43)
ManufacturersRolls-Royce Marine A/s Dep. Engines-Bergen (CAGE N4528); Ulstein Bergen A/s (CAGE N0379); Rolls-Royce Marine North America Inc (CAGE 1TH76); Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (CAGE 16236)
Technical Specifications
ParameterValue
NSN4320-01-303-6402
Primary Part Number21117
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerRolls-Royce Marine A/s Dep. Engines-Bergen
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5961-00-116-2011 INTERCHANGEABLE
Transistor
5305-00-144-3900 INTERCHANGEABLE
Screw,machine
2640-00-511-3544211-17/B211-17 INTERCHANGEABLE
Valve,pneumatic Tire
Goodrich Corporation
4320-00-906-979224075 INTERCHANGEABLE
Impeller and Shaft
Industrial Technologies and Services Llc
3110-00-936-7399211-17 INTERCHANGEABLE
Ball,bearing
Cnh Industrial America Llc Dba Cnh America
3020-01-185-122721117 INTERCHANGEABLE
Gear Rack
Moog Inc. Dba Ampac-Isp Corp
4320-01-207-248121117 INTERCHANGEABLE
Hanger and Piston Subassembly
Parker Hannifin Corporation Div Hydraulic Systems Division
6625-01-377-350821117-001/01A INTERCHANGEABLE
Analyzer,spectrum
Giga-Tronics Incorporated Dba Giga-Tronics
5970-01-387-761421117 INTERCHANGEABLE
Insulator,feedthru
Science Applications International Corporation
5365-01-399-4623PL45267-203 INTERCHANGEABLE
Plug,machine Thread
Curtiss-Wright Flow Control Corporation Dba Enertech Div Curtiss-Wright Flow Control
Cross-Reference Index
Part NumberManufacturer
21117 Rolls-Royce Marine A/s Dep. Engines-Bergen (NOR)
F73/27 Ulstein Bergen A/s (NOR)
705778 Rolls-Royce Marine North America Inc (USA)
705778 BE Rolls-Royce Marine North America Inc (USA)
705778 Rolls-Royce Marine A/s Dep. Engines-Bergen (NOR)
21117 Ulstein Bergen A/s (NOR)
F73/27 Rolls-Royce Marine A/s Dep. Engines-Bergen (NOR)
21117 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
Related Parts
5961-00-116-2011INTERCHANGEABLE
TRANSISTOR
5305-00-144-3900INTERCHANGEABLE
SCREW,MACHINE
2640-00-511-3544INTERCHANGEABLE
VALVE,PNEUMATIC TIRE
211-17/B211-17
4320-00-906-9792INTERCHANGEABLE
IMPELLER AND SHAFT
24075
3110-00-936-7399INTERCHANGEABLE
BALL,BEARING
211-17
3020-01-185-1227INTERCHANGEABLE
GEAR RACK
21117
4320-01-207-2481INTERCHANGEABLE
HANGER AND PISTON SUBASSEMBLY
21117
6625-01-377-3508INTERCHANGEABLE
ANALYZER,SPECTRUM
21117-001/01A
5970-01-387-7614INTERCHANGEABLE
INSULATOR,FEEDTHRU
21117
5365-01-399-4623INTERCHANGEABLE
PLUG,MACHINE THREAD
PL45267-203

Frequently Asked Questions

What is NSN 4320-01-303-6402?

NSN 4320-01-303-6402 is a Ring,wearing, manufactured by Rolls-Royce Marine A/s Dep. Engines-Bergen, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-01-303-6402?

NSN 4320-01-303-6402 has 8 cross-referenced part numbers: 21117 (Rolls-Royce Marine A/s Dep. Engines-Bergen), F73/27 (Ulstein Bergen A/s), 705778 (Rolls-Royce Marine North America Inc), 705778 BE (Rolls-Royce Marine North America Inc), 705778 (Rolls-Royce Marine A/s Dep. Engines-Bergen) and 3 more.

What NSN replaces 4320-01-303-6402?

There are 10 known substitutes for 4320-01-303-6402: 5961-00-116-2011, 5305-00-144-3900, 2640-00-511-3544 and 7 more. Verify interchangeability with system specifications before substitution.

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