PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B281Valve,poppet,engine

Agco Corp Parts Opn · NSN 2805-00-352-3083 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-352-3083 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-352-3083. Primary manufacturer part number: B281.
Features
  • Valve,poppet,engine — FSC 2805
  • Head Height: 0.2200 INCHES NOMINAL IN
  • Metallic Hardness Rating and Location: 36.0 ROCKWELL C MAXIMUM STEM
  • Metallic Hardness Rating and Location: 72.0 ROCKWELL B NOMINAL HEAD
  • FSC Application Data: GASOLINE ENGINE
  • Groove Diameter: 0.2670 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM IN
  • Chamfer Angle in Deg: 45.0
  • Outside Diameter: 1.5060 INCHES MINIMUM AND 1.5160 INCHES MAXIMUM IN
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 2805-00-352-3083, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Agco Corp Parts Opn. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2805-00-352-3083
Primary Part NumberB281
Item NameValve,poppet,engine
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerAgco Corp Parts Opn
StatusACTIVE
Head Height0.2200 INCHES NOMINAL IN
Metallic Hardness Rating and Location36.0 ROCKWELL C MAXIMUM STEM
Metallic Hardness Rating and Location72.0 ROCKWELL B NOMINAL HEAD
FSC Application DataGASOLINE ENGINE
Groove Diameter0.2670 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM IN
Chamfer Angle in Deg45.0
Outside Diameter1.5060 INCHES MINIMUM AND 1.5160 INCHES MAXIMUM IN
Groove Width0.0950 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM IN
Stem StyleGROOVED
Carbon Relief GrooveNOT INCLUDED
Distance From Groove to Stem End0.2969 INCHES NOMINAL IN
Stem Length4.3180 INCHES MINIMUM AND 4.3380 INCHES MAXIMUM IN
Neck Radius0.4375 INCHES NOMINAL IN
Metallic Hardness Rating and Location46.0 ROCKWELL C MINIMUM TIP
Seat Angle in Deg45.0
Metallic Hardness Rating and Location26.0 ROCKWELL C MINIMUM STEM
Stem Diameter0.3090 INCHES MINIMUM AND 0.3100 INCHES MAXIMUM IN
Metallic Hardness Rating and Location54.0 ROCKWELL C MAXIMUM TIP
Head StyleMUSHROOM
Chamfer Length0.0156 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2805-00-012-2600V-2556X INTERCHANGEABLE
Valve,poppet,engine
Eaton Corp Dba Eaton Aerospace Jackson
3120-00-085-4074A605 INTERCHANGEABLE
Bearing,sleeve
Chrysler Corp Amplex Div
4820-00-087-7470119-4 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Watts Regulator Company
3030-00-251-7474 INTERCHANGEABLE
Belts,v,matched Set
3040-00-270-80494500-281 INTERCHANGEABLE
Connecting Link,rigid
Tyee Aircraft Inc Div Tyee Aircraft
9390-00-298-3395 INTERCHANGEABLE
Wick
6250-00-299-47331194 INTERCHANGEABLE
Lampholder
Egs Electrical Group Appleton Div
5340-00-366-53601194 INTERCHANGEABLE
Disk,solid,plain
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
6150-00-371-32811194 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Champion Aerospace Llc
6665-00-429-602540000030 INTERCHANGEABLE
Filament,combustible Gas Indicat
Avox Systems Inc Dba Avox Systems Inc
Cross-Reference Index
Part NumberManufacturer
VI-1174 Spx Corp (USA)
V1531N Mcquay-Norris Inc Oem Div an Skf Industries Co
4500281 Agco Corp Parts Opn (USA)
1194 Allied Motor Parts Co (USA)
V-2036 Ertel Engineering Co (USA)
I-311 Gould Inc Clevite Engine Parts Div (USA)
VI-1174 Bosch Automotive Service Solutions Inc. (USA)
V1388 Dana Corp Engine Products Div (USA)
B281 PRIMARY Agco Corp Parts Opn (USA)
A605 Sterling Div Federal Mogul Corp (USA)
1194 Napasco International Inc (USA)
V2036 Trw Inc Trw Intl Trade Government Sales Dept (USA)
Related Parts
2805-00-012-2600INTERCHANGEABLE
VALVE,POPPET,ENGINE
V-2556X
3120-00-085-4074INTERCHANGEABLE
BEARING,SLEEVE
A605
4820-00-087-7470INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
119-4
3030-00-251-7474INTERCHANGEABLE
BELTS,V,MATCHED SET
3040-00-270-8049INTERCHANGEABLE
CONNECTING LINK,RIGID
4500-281
9390-00-298-3395INTERCHANGEABLE
WICK
6250-00-299-4733INTERCHANGEABLE
LAMPHOLDER
1194
5340-00-366-5360INTERCHANGEABLE
DISK,SOLID,PLAIN
1194
6150-00-371-3281INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
1194
6665-00-429-6025INTERCHANGEABLE
FILAMENT,COMBUSTIBLE GAS INDICAT
40000030
5945-00-433-3556INTERCHANGEABLE
RELAY,SOLID STATE
1794AS7015
4920-00-495-5055INTERCHANGEABLE
FILAMENT,TESTER,LUB
11-94

Frequently Asked Questions

What is NSN 2805-00-352-3083?

NSN 2805-00-352-3083 is a Valve,poppet,engine, manufactured by Agco Corp Parts Opn, classified under FSC 2805 (No Item Name Available). Status: active.

What are the part numbers for NSN 2805-00-352-3083?

NSN 2805-00-352-3083 has 12 cross-referenced part numbers: VI-1174 (Spx Corp), V1531N (Mcquay-Norris Inc Oem Div an Skf Industries Co), 4500281 (Agco Corp Parts Opn), 1194 (Allied Motor Parts Co), V-2036 (Ertel Engineering Co) and 7 more.

What NSN replaces 2805-00-352-3083?

There are 12 known substitutes for 2805-00-352-3083: 2805-00-012-2600, 3120-00-085-4074, 4820-00-087-7470 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B281?

Key specifications for B281: Head Height: 0.2200 INCHES NOMINAL IN; Metallic Hardness Rating and Location: 36.0 ROCKWELL C MAXIMUM STEM; Metallic Hardness Rating and Location: 72.0 ROCKWELL B NOMINAL HEAD; FSC Application Data: GASOLINE ENGINE. 20 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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