PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

577A1Casing,labyrinth

Steward Machine Co Inc · NSN 2825-01-196-3940 · FSC 2825 · No Item Name Available
Verified by PartsTable
NSN 2825-01-196-3940 — this item is cataloged by the U.S. Government under National Stock Number 2825-01-196-3940. Primary manufacturer part number: 577A1.
Features
  • Casing,labyrinth — FSC 2825
  • General Characteristics Item Description: CAST STEEL;6.681 IN.DIA;2.312 IN.W IN
  • 6 verified cross-references
  • Primary manufacturer: Steward Machine Co Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Casing,labyrinth, cataloged under National Stock Number 2825-01-196-3940, is classified within Federal Supply Class 2825 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Steward Machine Co Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2825-01-196-3940
Primary Part Number577A1
Item NameCasing,labyrinth
FSC / FSG2825 / 28 — No Item Name Available
ManufacturerSteward Machine Co Inc
StatusACTIVE
General Characteristics Item DescriptionCAST STEEL;6.681 IN.DIA;2.312 IN.W IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
2825-00-317-432950-107 INTERCHANGEABLE
Labyrinth,packing
Steward Machine Co Inc
5930-00-327-8388577A1 INTERCHANGEABLE
Switch,mercury
Cardwell Condenser Corp Lapointe-Admiral Div
3110-00-734-8768A6294 INTERCHANGEABLE
Ball,bearing
Am General Llc
2825-00-769-7377312-117A INTERCHANGEABLE
Seal Ring Assembly,labyrinth
Steward Machine Co Inc
5310-01-257-898460577 INTERCHANGEABLE
Nut
Tld Ace Corp Div Tld Ace
2805-01-277-371760577 INTERCHANGEABLE
Mount Silencer Brac
Brunswick Corp Dba Mercury Marine Div Mercury Marine
Cross-Reference Index
Part NumberManufacturer
60-606 PIECE 102 Hardie-Tynes Co., Inc. (USA)
577A1 PRIMARY Steward Machine Co Inc (USA)
60-606 Hardie-Tynes Co., Inc. (USA)
577A1 Hardie-Tynes Co., Inc. (USA)
60-577 PIECE 102 Hardie-Tynes Co., Inc. (USA)
60-577 Hardie-Tynes Co., Inc. (USA)
Related Parts
2825-00-317-4329INTERCHANGEABLE
LABYRINTH,PACKING
50-107
5930-00-327-8388INTERCHANGEABLE
SWITCH,MERCURY
577A1
3110-00-734-8768INTERCHANGEABLE
BALL,BEARING
A6294
2825-00-769-7377INTERCHANGEABLE
SEAL RING ASSEMBLY,LABYRINTH
312-117A
5310-01-257-8984INTERCHANGEABLE
NUT
60577
2805-01-277-3717INTERCHANGEABLE
MOUNT SILENCER BRAC
60577

Frequently Asked Questions

What is NSN 2825-01-196-3940?

NSN 2825-01-196-3940 is a Casing,labyrinth, manufactured by Steward Machine Co Inc, classified under FSC 2825 (No Item Name Available). Status: active.

What are the part numbers for NSN 2825-01-196-3940?

NSN 2825-01-196-3940 has 6 cross-referenced part numbers: 60-606 PIECE 102 (Hardie-Tynes Co., Inc.), 577A1 (Steward Machine Co Inc), 60-606 (Hardie-Tynes Co., Inc.), 577A1 (Hardie-Tynes Co., Inc.), 60-577 PIECE 102 (Hardie-Tynes Co., Inc.) and 1 more.

What NSN replaces 2825-01-196-3940?

There are 6 known substitutes for 2825-01-196-3940: 2825-00-317-4329, 5930-00-327-8388, 3110-00-734-8768 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 577A1?

Key specifications for 577A1: General Characteristics Item Description: CAST STEEL;6.681 IN.DIA;2.312 IN.W 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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