PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS-555BCollar,steam Turbine

Siemens Energy, Inc. · NSN 2825-01-199-7986 · FSC 2825 · No Item Name Available
Verified by PartsTable
NSN 2825-01-199-7986 — this item is cataloged by the U.S. Government under National Stock Number 2825-01-199-7986. Primary manufacturer part number: MS-555B.
Features
  • Collar,steam Turbine — FSC 2825
  • General Characteristics Item Description: STEEL; MIL-S-16782; OD 0.875 IN.; ID 0.375 IN.; THK 0.315 IN. IN
  • 5 verified cross-references
  • Primary manufacturer: Siemens Energy, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Collar,steam Turbine, cataloged under National Stock Number 2825-01-199-7986, is classified within Federal Supply Class 2825 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Siemens Energy, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2825-01-199-7986
Primary Part NumberMS-555B
Item NameCollar,steam Turbine
FSC / FSG2825 / 28 — No Item Name Available
ManufacturerSiemens Energy, Inc.
StatusACTIVE
General Characteristics Item DescriptionSTEEL; MIL-S-16782; OD 0.875 IN.; ID 0.375 IN.; THK 0.315 IN. IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5342-01-173-079920082-1 INTERCHANGEABLE
Retainer,door
Actron Manufacturing, Inc. Dba Actron Manufacturing Inc
4730-01-199-3028HJ-26X3 INTERCHANGEABLE
Restrictor,fluid Flow
Siemens Energy, Inc.
2825-01-199-5759141-0514 INTERCHANGEABLE
Ring,tightening,turbine
Siemens Energy, Inc.
2825-01-199-5760141-0515 INTERCHANGEABLE
Ring,tightening,turbine
Siemens Energy, Inc.
2825-01-199-5761141-0513 INTERCHANGEABLE
Ring,tightening,turbine
Siemens Energy, Inc.
2825-01-199-7987GJ-555A INTERCHANGEABLE
Collar,steam Turbine
Siemens Energy, Inc.
2825-01-199-7988MS201BTX1 INTERCHANGEABLE
Segment,retainer Ring,steam Turb
Siemens Energy, Inc.
Cross-Reference Index
Part NumberManufacturer
J-1660 PIECE 45 Siemens Energy, Inc. (USA)
MS-555B PRIMARY Siemens Energy, Inc. (USA)
A-20082 Siemens Energy, Inc. (USA)
J-1660 Siemens Energy, Inc. (USA)
A-20082 PT 3 Siemens Energy, Inc. (USA)
Related Parts
5342-01-173-0799INTERCHANGEABLE
RETAINER,DOOR
20082-1
4730-01-199-3028INTERCHANGEABLE
RESTRICTOR,FLUID FLOW
HJ-26X3
2825-01-199-5759INTERCHANGEABLE
RING,TIGHTENING,TURBINE
141-0514
2825-01-199-5760INTERCHANGEABLE
RING,TIGHTENING,TURBINE
141-0515
2825-01-199-5761INTERCHANGEABLE
RING,TIGHTENING,TURBINE
141-0513
2825-01-199-7987INTERCHANGEABLE
COLLAR,STEAM TURBINE
GJ-555A
2825-01-199-7988INTERCHANGEABLE
SEGMENT,RETAINER RING,STEAM TURB
MS201BTX1

Frequently Asked Questions

What is NSN 2825-01-199-7986?

NSN 2825-01-199-7986 is a Collar,steam Turbine, manufactured by Siemens Energy, Inc., classified under FSC 2825 (No Item Name Available). Status: active.

What are the part numbers for NSN 2825-01-199-7986?

NSN 2825-01-199-7986 has 5 cross-referenced part numbers: J-1660 PIECE 45 (Siemens Energy, Inc.), MS-555B (Siemens Energy, Inc.), A-20082 (Siemens Energy, Inc.), J-1660 (Siemens Energy, Inc.), A-20082 PT 3 (Siemens Energy, Inc.).

What NSN replaces 2825-01-199-7986?

There are 7 known substitutes for 2825-01-199-7986: 5342-01-173-0799, 4730-01-199-3028, 2825-01-199-5759 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS-555B?

Key specifications for MS-555B: General Characteristics Item Description: STEEL; MIL-S-16782; OD 0.875 IN.; ID 0.375 IN.; THK 0.315 IN. IN. 1 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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