PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2121578Valve,poppet,engine

Atwood Fence Co Inc · NSN 2805-00-444-2061 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-444-2061 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-444-2061. Primary manufacturer part number: 2121578.
Features
  • Valve,poppet,engine — FSC 2805
  • Carbon Relief Groove: NOT INCLUDED
  • Distance From Second Groove to Stem End: 0.4640 INCHES NOMINAL IN
  • Seat Angle in Deg: 45.0
  • Material: STEEL OVERALL
  • First Groove Width: 0.0625 INCHES NOMINAL IN
  • Stem Style: DOUBLE GROOVED
  • Head Style: CONCAVE
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 2805-00-444-2061, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Atwood Fence Co Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2805-00-444-2061
Primary Part Number2121578
Item NameValve,poppet,engine
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerAtwood Fence Co Inc
StatusACTIVE
Carbon Relief GrooveNOT INCLUDED
Distance From Second Groove to Stem End0.4640 INCHES NOMINAL IN
Seat Angle in Deg45.0
MaterialSTEEL OVERALL
First Groove Width0.0625 INCHES NOMINAL IN
Stem StyleDOUBLE GROOVED
Head StyleCONCAVE
Neck Radius0.2000 INCHES NOMINAL IN
Outside Diameter1.6250 INCHES NOMINAL IN
Chamfer Length0.0100 INCHES NOMINAL IN
Head Height0.1450 INCHES NOMINAL IN
Stem Diameter0.3780 INCHES NOMINAL IN
Stem Length4.6180 INCHES NOMINAL IN
Second Groove Width0.0625 INCHES NOMINAL IN
Second Groove Diameter0.3220 INCHES NOMINAL IN
Distance From First Groove to Stem End0.3125 INCHES NOMINAL IN
Chamfer Angle in Deg45.0
First Groove Diameter0.3220 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6105-00-315-70562121578 INTERCHANGEABLE
Cover,electrical
Champion Aerospace Llc
6515-01-283-4349 INTERCHANGEABLE
Electrode,electrocardiograph
2540-01-460-244817-00005 INTERCHANGEABLE
Ventilator,air Circulating
Bae Systems Land & Armaments L.p.
5998-01-494-9601170-0005 INTERCHANGEABLE
Printed Circuit Board
Gables Engineering, Inc. Dba Gables Engineering Inc Div Coral Gables
1005-01-657-6945 INTERCHANGEABLE
Retainer,gun Component
Cross-Reference Index
Part NumberManufacturer
2121578 Atwood Fence Co Inc (USA)
V1855N005 Mcquay-Norris Inc Oem Div an Skf Industries Co
1700.005 Echlin Inc (USA)
2121578 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
V2310-5 Trw Inc Trw Intl Trade Government Sales Dept (USA)
V-1700+5 Dana Corp Engine Products Div (USA)
Related Parts
6105-00-315-7056INTERCHANGEABLE
COVER,ELECTRICAL
2121578
6515-01-283-4349INTERCHANGEABLE
ELECTRODE,ELECTROCARDIOGRAPH
2540-01-460-2448INTERCHANGEABLE
VENTILATOR,AIR CIRCULATING
17-00005
5998-01-494-9601INTERCHANGEABLE
PRINTED CIRCUIT BOARD
170-0005
1005-01-657-6945INTERCHANGEABLE
RETAINER,GUN COMPONENT

Frequently Asked Questions

What is NSN 2805-00-444-2061?

NSN 2805-00-444-2061 is a Valve,poppet,engine, manufactured by Atwood Fence Co Inc, classified under FSC 2805 (No Item Name Available). Status: active.

What are the part numbers for NSN 2805-00-444-2061?

NSN 2805-00-444-2061 has 6 cross-referenced part numbers: 2121578 (Atwood Fence Co Inc), V1855N005 (Mcquay-Norris Inc Oem Div an Skf Industries Co), 1700.005 (Echlin Inc), 2121578 (Chrysler Realty Company Llc Dba Daimler Chrysler), V2310-5 (Trw Inc Trw Intl Trade Government Sales Dept) and 1 more.

What NSN replaces 2805-00-444-2061?

There are 5 known substitutes for 2805-00-444-2061: 6105-00-315-7056, 6515-01-283-4349, 2540-01-460-2448 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2121578?

Key specifications for 2121578: Carbon Relief Groove: NOT INCLUDED; Distance From Second Groove to Stem End: 0.4640 INCHES NOMINAL IN; Seat Angle in Deg: 45.0; Material: STEEL OVERALL. 19 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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