PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AE73CSValve,poppet,engine

Wisconsin Motors, Llc · NSN 2805-00-270-3431 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-270-3431 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-270-3431. Primary manufacturer part number: AE73CS.
Features
  • Valve,poppet,engine — FSC 2805
  • Stem Style: GROOVED
  • Seat Angle in Deg: 45.0
  • Distance From Groove to Stem End: 0.2400 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
  • Outside Diameter: 1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN
  • Metallic Hardness Rating and Location: 55.0 SHORE SCLEROSCOPE MINIMUM TIP
  • FSC Application Data: GASOLINE ENGINE
  • Metallic Hardness Rating and Location: 65.0 SHORE SCLEROSCOPE MAXIMUM TIP
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Mechanical power generation
  • Drive system operation
General Description

The Valve,poppet,engine, cataloged under National Stock Number 2805-00-270-3431, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2805-00-270-3431
Primary Part NumberAE73CS
Item NameValve,poppet,engine
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerWisconsin Motors, Llc
StatusCANCELLED
Stem StyleGROOVED
Seat Angle in Deg45.0
Distance From Groove to Stem End0.2400 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN
Outside Diameter1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN
Metallic Hardness Rating and Location55.0 SHORE SCLEROSCOPE MINIMUM TIP
FSC Application DataGASOLINE ENGINE
Metallic Hardness Rating and Location65.0 SHORE SCLEROSCOPE MAXIMUM TIP
Chamfer Angle in Deg45.0
Head StyleRAISED FACE
Carbon Relief GrooveNOT INCLUDED
Groove Diameter0.2670 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM IN
Chamfer Length0.0156 INCHES MINIMUM AND 0.0312 INCHES MAXIMUM IN
Neck Radius0.2500 INCHES NOMINAL IN
Stem Diameter0.3090 INCHES MINIMUM AND 0.3100 INCHES MAXIMUM IN
Head Height0.2187 INCHES NOMINAL IN
Stem Length4.2636 INCHES MINIMUM AND 4.2676 INCHES MAXIMUM IN
Groove Width0.0950 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
1610-00-439-552314490 INTERCHANGEABLE
Parts Kit,valve Hou
Hamilton Sundstrand Corporation Dba Collins Aerospace
3120-00-661-4031345360-00 INTERCHANGEABLE
Bushing,sleeve
Curtiss-Wright Electro-Mechanical Corporation Div Epd
2530-00-922-5242FC14492 INTERCHANGEABLE
Boot,vehicular Components
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
5365-01-479-20373271503 INTERCHANGEABLE
Spacer,sleeve
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
625023 Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA)
AE73CS PRIMARY Wisconsin Motors, Llc (USA)
80A008 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
14492 Sentinel Radio Corp (USA)
625023 Aqua-Chem Inc Cleaver-Brooks Div (USA)
AE73C PRIMARY Wisconsin Motors, Llc (USA)
Related Parts
1610-00-439-5523INTERCHANGEABLE
PARTS KIT,VALVE HOU
14490
3120-00-661-4031INTERCHANGEABLE
BUSHING,SLEEVE
345360-00
2530-00-922-5242INTERCHANGEABLE
BOOT,VEHICULAR COMPONENTS
FC14492
5365-01-479-2037INTERCHANGEABLE
SPACER,SLEEVE
3271503

Frequently Asked Questions

What is NSN 2805-00-270-3431?

NSN 2805-00-270-3431 is a Valve,poppet,engine, manufactured by Wisconsin Motors, Llc, classified under FSC 2805 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2805-00-270-3431?

NSN 2805-00-270-3431 has 6 cross-referenced part numbers: 625023 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), AE73CS (Wisconsin Motors, Llc), 80A008 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), 14492 (Sentinel Radio Corp), 625023 (Aqua-Chem Inc Cleaver-Brooks Div) and 1 more.

What NSN replaces 2805-00-270-3431?

There are 4 known substitutes for 2805-00-270-3431: 1610-00-439-5523, 3120-00-661-4031, 2530-00-922-5242 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AE73CS?

Key specifications for AE73CS: Stem Style: GROOVED; Seat Angle in Deg: 45.0; Distance From Groove to Stem End: 0.2400 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN; Outside Diameter: 1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2805-00-270-3431 still in active supply?

NSN 2805-00-270-3431 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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