The Bearing Assembly,stern Tube, cataloged under National Stock Number 3120-01-618-4091, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3120-01-618-4091
Item Name
Bearing Assembly,stern Tube
FSC / FSG
3120 / 31 — Bearings, Plain, Unmounted
Status
ACTIVE
Overall Diameter
0.5012 INCHES NOMINAL IN
Material
ALUMINUM
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
MS21240-06A018
2/2Government specification standardization
U.S. Government activity
No interchangeability data on file.
Other items in FSC 3120 — Bearings, Plain, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3120-00-001-1288
3120-00-001-1288 · Item name not on file
3120-00-001-1835
3120-00-001-1835 · Item name not on file
3120-00-001-1838
3120-00-001-1838 · Item name not on file
3120-00-001-1928
3120-00-001-1928 · Item name not on file
3120-00-001-1934
3120-00-001-1934 · Item name not on file
3120-00-001-3933
3120-00-001-3933 · Item name not on file
3120-00-001-3937
3120-00-001-3937 · Item name not on file
3120-00-001-3938
3120-00-001-3938 · Item name not on file
Frequently Asked Questions
What is NSN 3120-01-618-4091?
NSN 3120-01-618-4091 is a Bearing Assembly,stern Tube, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
What are the specifications of 3120-01-618-4091?
Key specifications for 3120-01-618-4091: Overall Diameter: 0.5012 INCHES NOMINAL IN; Overall Length: 0.5625 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: BEARING ASSEMBLY,STERN TUB; Material: ALUMINUM. 2 specifications are documented in the U.S. Government catalog.
Is NSN 3120-01-618-4091 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.