PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

845-4687407 PC 124D4Bearing,washer,thrust

Naval Inventory Control Point Mechanicsburg · NSN 3120-01-643-1685 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-643-1685 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-643-1685. Primary manufacturer part number: 845-4687407 PC 124D4.
Features
  • Bearing,washer,thrust — FSC 3120
  • 12 verified cross-references
  • Primary manufacturer: Naval Inventory Control Point Mechanicsburg
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Structural fastening and assembly
  • Equipment mounting
General Description

The Bearing,washer,thrust, cataloged under National Stock Number 3120-01-643-1685, 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 12 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBearing,washer,thrust
FSC / FSG3120 — No Item Name Available (FSG 31)
ManufacturersNaval Inventory Control Point Mechanicsburg (CAGE 03950); Electric Boat Corporation Div General Dynamics Electric Boat (CAGE 96169); Naval Ship Systems Command (CAGE 80064); Naval Sea Systems Command (CAGE 53711)
Technical Specifications
ParameterValue
NSN3120-01-643-1685
Primary Part Number845-4687407 PC 124D4
Item NameBearing,washer,thrust
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3120-01-499-9406845-4687407 PC 124 INTERCHANGEABLE
Bearing,washer,thrust
Naval Ship Systems Command
2520-01-643-2978 INTERCHANGEABLE
Universal Joint,vehicular
3010-01-654-4056501-7066655-14 INTERCHANGEABLE
Universal Joint,nonvehicular
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
845-4687407 PC 124D4 Naval Inventory Control Point Mechanicsburg (USA)
2641-792-03 PC 124 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
7383858-264179203-00124D4 Naval Inventory Control Point Mechanicsburg (USA)
7383858-H5257617-01-4D4 Naval Inventory Control Point Mechanicsburg (USA)
H525-7617-1-4 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
845-4687407 PC 124 Naval Ship Systems Command (USA)
7383858-264179203-00124 Naval Sea Systems Command (USA)
2641-792-03 PC 124D4 Naval Inventory Control Point Mechanicsburg (USA)
501-7066655-1-4D4 Naval Inventory Control Point Mechanicsburg (USA)
501-7066655-1-4 Naval Sea Systems Command (USA)
H525-7617-1-4D4 Naval Inventory Control Point Mechanicsburg (USA)
7383858-H5257617-01-4 Naval Sea Systems Command (USA)
Related Parts
3120-01-499-9406INTERCHANGEABLE
BEARING,WASHER,THRUST
845-4687407 PC 124
2520-01-643-2978INTERCHANGEABLE
UNIVERSAL JOINT,VEHICULAR
3010-01-654-4056INTERCHANGEABLE
UNIVERSAL JOINT,NONVEHICULAR
501-7066655-14

Frequently Asked Questions

What is NSN 3120-01-643-1685?

NSN 3120-01-643-1685 is a Bearing,washer,thrust, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-643-1685?

NSN 3120-01-643-1685 has 12 cross-referenced part numbers: 845-4687407 PC 124D4 (Naval Inventory Control Point Mechanicsburg), 2641-792-03 PC 124 (Electric Boat Corporation Div General Dynamics Electric Boat), 7383858-264179203-00124D4 (Naval Inventory Control Point Mechanicsburg), 7383858-H5257617-01-4D4 (Naval Inventory Control Point Mechanicsburg), H525-7617-1-4 (Electric Boat Corporation Div General Dynamics Electric Boat) and 7 more.

What NSN replaces 3120-01-643-1685?

There are 3 known substitutes for 3120-01-643-1685: 3120-01-499-9406, 2520-01-643-2978, 3010-01-654-4056. Verify interchangeability with system specifications before substitution.

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