PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-4578Shaft,straight

Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture · NSN 3040-00-574-7485 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-574-7485 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-574-7485. Primary manufacturer part number: A-4578.
Features
  • Shaft,straight — FSC 3040
  • Surface Finish: 63.0 MICROINCHES
  • First End Style: PLAIN
  • End Similarity: IDENTICAL
  • First End Diameter: 0.7480 INCHES NOMINAL IN
  • Material Document and Classification: MIL-S-689,CLASS C MIL SPEC SINGLE MATERIAL RESPONSE
  • Material: STEEL
  • 3 verified cross-references
Applications
  • Applications requiring Steel construction
General Description

The Shaft,straight, cataloged under National Stock Number 3040-00-574-7485, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-00-574-7485
Primary Part NumberA-4578
Item NameShaft,straight
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerDresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture
StatusACTIVE
Surface Finish63.0 MICROINCHES
First End StylePLAIN
End SimilarityIDENTICAL
First End Diameter0.7480 INCHES NOMINAL IN
Material Document and ClassificationMIL-S-689,CLASS C MIL SPEC SINGLE MATERIAL RESPONSE
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4820-00-600-8673A4578 INTERCHANGEABLE
Disk,valve
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
5330-01-027-64514578 INTERCHANGEABLE
Gasket
Eaton Corporation Div Fed
Cross-Reference Index
Part NumberManufacturer
A-4578 Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA)
737166 Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA)
PLH7814PC93 Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture (USA)
Related Parts
4820-00-600-8673INTERCHANGEABLE
DISK,VALVE
A4578
5330-01-027-6451INTERCHANGEABLE
GASKET
4578

Frequently Asked Questions

What is NSN 3040-00-574-7485?

NSN 3040-00-574-7485 is a Shaft,straight, manufactured by Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-574-7485?

NSN 3040-00-574-7485 has 3 cross-referenced part numbers: A-4578 (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture), 737166 (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture), PLH7814PC93 (Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture).

What NSN replaces 3040-00-574-7485?

There are 2 known substitutes for 3040-00-574-7485: 4820-00-600-8673, 5330-01-027-6451. Verify interchangeability with system specifications before substitution.

What are the specifications of A-4578?

Key specifications for A-4578: Overall Length: 6.000 INCHES NOMINAL IN; Surface Finish: 63.0 MICROINCHES; First End Style: PLAIN; End Similarity: IDENTICAL. 7 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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