PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-B-17901ABearing,stern Tube

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 3120-01-058-1465 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-058-1465 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-058-1465. Primary manufacturer part number: MIL-B-17901A.
Features
  • Bearing,stern Tube — FSC 3120
  • Nondefinitive Spec/std Data: 2 CLASS AND 3 TYPE
  • Departure From Cited Document: AS MODIFIED BY 9.000 IN OD TAIL SHAFT IN
  • General Characteristics Item Description: FULLY MOLDED SOLID TYPE,UNDRILLED FLANGE,BEARING OUTSIDE DIA 11.375 INLENGTH 34.000 IN,FLANGE 14.500 IN X 0.750 IN IN
  • 3 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Bearing,stern Tube, cataloged under National Stock Number 3120-01-058-1465, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-058-1465
Primary Part NumberMIL-B-17901A
Item NameBearing,stern Tube
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Nondefinitive Spec/std Data2 CLASS AND 3 TYPE
Departure From Cited DocumentAS MODIFIED BY 9.000 IN OD TAIL SHAFT IN
General Characteristics Item DescriptionFULLY MOLDED SOLID TYPE,UNDRILLED FLANGE,BEARING OUTSIDE DIA 11.375 INLENGTH 34.000 IN,FLANGE 14.500 IN X 0.750 IN IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3120-01-058-1464 INTERCHANGEABLE
Bearing,stern Tube
Cross-Reference Index
Part NumberManufacturer
MIL-B-17901A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A-767 Bfgoodrich Co the (USA)
A-767 Moffitt Lucian Q Inc Sub of the Bfgoodrich Co (USA)
Related Parts
3120-01-058-1464INTERCHANGEABLE
BEARING,STERN TUBE

Frequently Asked Questions

What is NSN 3120-01-058-1465?

NSN 3120-01-058-1465 is a Bearing,stern Tube, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-058-1465?

NSN 3120-01-058-1465 has 3 cross-referenced part numbers: MIL-B-17901A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), A-767 (Bfgoodrich Co the), A-767 (Moffitt Lucian Q Inc Sub of the Bfgoodrich Co).

What NSN replaces 3120-01-058-1465?

There is 1 known substitute for 3120-01-058-1465: 3120-01-058-1464. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-B-17901A?

Key specifications for MIL-B-17901A: Nondefinitive Spec/std Data: 2 CLASS AND 3 TYPE; Departure From Cited Document: AS MODIFIED BY 9.000 IN OD TAIL SHAFT IN; General Characteristics Item Description: FULLY MOLDED SOLID TYPE,UNDRILLED FLANGE,BEARING OUTSIDE DIA 11.375 INLENGTH 34.000 IN,FLANGE 14.500 IN X 0.750 IN IN. 3 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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