PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H7493901-49Housing,bearing Unit

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 3130-01-477-0580 · FSC 3130 · No Item Name Available
Verified by PartsTable
NSN 3130-01-477-0580 — this item is cataloged by the U.S. Government under National Stock Number 3130-01-477-0580. Primary manufacturer part number: H7493901-49.
Features
  • Housing,bearing Unit — FSC 3130
  • Material: ALUMINUM ALLOY 713.0 OVERALL
  • Material Document and Classification: QQ-A-601,ALY 713.0 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • 3 verified cross-references
  • Primary manufacturer: Electric Boat Corporation Div General Dynamics Electric Boat
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Aluminum Alloy 713.0 Overall construction
General Description

The Housing,bearing Unit, cataloged under National Stock Number 3130-01-477-0580, is classified within Federal Supply Class 3130 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3130-01-477-0580
Primary Part NumberH7493901-49
Item NameHousing,bearing Unit
FSC / FSG3130 / 31 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
MaterialALUMINUM ALLOY 713.0 OVERALL
Material Document and ClassificationQQ-A-601,ALY 713.0 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5315-01-476-614436-01-7808 INTERCHANGEABLE
Pin,straight,headless
Electric Boat Corporation Div General Dynamics Electric Boat
3130-01-477-0578254-7015355PN13 INTERCHANGEABLE
Housing,bearing Unit
Naval Sea Systems Command
3110-01-477-0589254-7015355PN48 INTERCHANGEABLE
Plate,retaining,bearing
Naval Sea Systems Command
5342-01-477-76137015355PN47 INTERCHANGEABLE
Bellows,protection
Naval Sea Systems Command
3110-01-489-1050M-12121 INTERCHANGEABLE
Bearing,roller,needle
Timken Aerospace, Inc Dba Torrington Product
Cross-Reference Index
Part NumberManufacturer
254-7015355 Naval Sea Systems Command (USA)
254-7015355PN49 Naval Sea Systems Command (USA)
H7493901-49 PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
Related Parts
5315-01-476-6144INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
36-01-7808
3130-01-477-0578INTERCHANGEABLE
HOUSING,BEARING UNIT
254-7015355PN13
3110-01-477-0589INTERCHANGEABLE
PLATE,RETAINING,BEARING
254-7015355PN48
5342-01-477-7613INTERCHANGEABLE
BELLOWS,PROTECTION
7015355PN47
3110-01-489-1050INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
M-12121

Frequently Asked Questions

What is NSN 3130-01-477-0580?

NSN 3130-01-477-0580 is a Housing,bearing Unit, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 3130 (No Item Name Available). Status: active.

What are the part numbers for NSN 3130-01-477-0580?

NSN 3130-01-477-0580 has 3 cross-referenced part numbers: 254-7015355 (Naval Sea Systems Command), 254-7015355PN49 (Naval Sea Systems Command), H7493901-49 (Electric Boat Corporation Div General Dynamics Electric Boat).

What NSN replaces 3130-01-477-0580?

There are 5 known substitutes for 3130-01-477-0580: 5315-01-476-6144, 3130-01-477-0578, 3110-01-477-0589 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of H7493901-49?

Key specifications for H7493901-49: Material: ALUMINUM ALLOY 713.0 OVERALL; End Item Identification: NSSN CLASS SUBMARINE, MAIN CONDENSER OVERPRESSURE TRIP MECHANISM; Material Document and Classification: QQ-A-601,ALY 713.0 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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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