PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G547-2101 PN 166D4Bearing,sleeve

Naval Inventory Control Point Mechanicsburg · NSN 3120-01-623-8718 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-623-8718 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-623-8718. Primary manufacturer part number: G547-2101 PN 166D4.
Features
  • Bearing,sleeve — FSC 3120
  • 14 verified cross-references
  • Primary manufacturer: Naval Inventory Control Point Mechanicsburg
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-01-623-8718, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. This item has 14 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBearing,sleeve
FSC / FSG3120 — No Item Name Available (FSG 31)
ManufacturersNaval Inventory Control Point Mechanicsburg (CAGE 03950); Naval Sea Systems Command (CAGE 53711); Electric Boat Corporation Div General Dynamics Electric Boat (CAGE 96169); Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M (CAGE 96906)
Technical Specifications
ParameterValue
NSN3120-01-623-8718
Primary Part NumberG547-2101 PN 166D4
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3120-00-847-6287 INTERCHANGEABLE
Bearing,sleeve
Cross-Reference Index
Part NumberManufacturer
G547-2101 PN 166D4 Naval Inventory Control Point Mechanicsburg (USA)
7550477-G5472101-0166 Naval Sea Systems Command (USA)
G5472101-0166D4 Naval Inventory Control Point Mechanicsburg (USA)
G5472101-0166 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
MS17795-74 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
G547-0001-G5472101-0166 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
MS17795-74D4 Naval Inventory Control Point Mechanicsburg (USA)
211049304D4 Naval Inventory Control Point Mechanicsburg (USA)
211049304 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
7384567 PN 166D4 Naval Inventory Control Point Mechanicsburg (USA)
G547-2101 PN 166 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
7384567 PN 166 Naval Sea Systems Command (USA)
7550477-G5472101-0166D4 Naval Inventory Control Point Mechanicsburg (USA)
G547-0001-G5472101-0166D4 Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
3120-00-847-6287INTERCHANGEABLE
BEARING,SLEEVE

Frequently Asked Questions

What is NSN 3120-01-623-8718?

NSN 3120-01-623-8718 is a Bearing,sleeve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-623-8718?

NSN 3120-01-623-8718 has 14 cross-referenced part numbers: G547-2101 PN 166D4 (Naval Inventory Control Point Mechanicsburg), 7550477-G5472101-0166 (Naval Sea Systems Command), G5472101-0166D4 (Naval Inventory Control Point Mechanicsburg), G5472101-0166 (Electric Boat Corporation Div General Dynamics Electric Boat), MS17795-74 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M) and 9 more.

What NSN replaces 3120-01-623-8718?

There is 1 known substitute for 3120-01-623-8718: 3120-00-847-6287. Verify interchangeability with system specifications before substitution.

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