PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4845Valve,poppet,engine

Eaton Corporation · NSN 2805-00-350-4970 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-350-4970 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-350-4970. Primary manufacturer part number: 4845.
Features
  • Valve,poppet,engine — FSC 2805
  • Groove Width: 0.3150 INCHES MINIMUM AND 0.3250 INCHES MAXIMUM IN
  • Head Height: 0.1700 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
  • Head Style: CONCAVE
  • Neck Radius: 0.8200 INCHES NOMINAL IN
  • Seat Angle in Deg: 92.0
  • Metallic Hardness Rating and Location: 15.0 ROCKWELL C NOMINAL HEAD
  • Metallic Hardness Rating and Location: 45.0 ROCKWELL C NOMINAL STEM
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 2805-00-350-4970, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Eaton Corporation. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2805-00-350-4970
Primary Part Number4845
Item NameValve,poppet,engine
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerEaton Corporation
StatusACTIVE
Groove Width0.3150 INCHES MINIMUM AND 0.3250 INCHES MAXIMUM IN
Head Height0.1700 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
Head StyleCONCAVE
Neck Radius0.8200 INCHES NOMINAL IN
Seat Angle in Deg92.0
Metallic Hardness Rating and Location15.0 ROCKWELL C NOMINAL HEAD
Metallic Hardness Rating and Location45.0 ROCKWELL C NOMINAL STEM
Metallic Hardness Rating and Location65.0 SHORE SCLEROSCOPE NOMINAL TIP
Chamfer Length0.0050 INCHES MINIMUM AND 0.0100 INCHES MAXIMUM IN
Carbon Relief GrooveNOT INCLUDED
Groove Diameter0.3740 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN
Stem Diameter0.4220 INCHES MINIMUM AND 0.4260 INCHES MAXIMUM IN
Distance From Groove to Stem End0.1810 INCHES NOMINAL IN
Stem Length5.3925 INCHES MINIMUM AND 5.4785 INCHES MAXIMUM IN
Stem StyleGROOVED
Outside Diameter2.0970 INCHES MINIMUM AND 2.1030 INCHES MAXIMUM IN
Chamfer Angle in Deg45.0
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
1660-00-055-34444845 INTERCHANGEABLE
Sleeve,seal Coupler
Flexco, Inc
5905-00-270-6754 INTERCHANGEABLE
Resistor,fixed,wire Wound
5935-00-321-50554845 INTERCHANGEABLE
Jack Assy,telephone
Bradford Vibrators Co the
5950-00-825-64405012B INTERCHANGEABLE
Coil,radio Frequency
North Hills Signal Processing Corp.
3040-00-977-3232 INTERCHANGEABLE
Bracket,eye,nonrotating Shaft
2540-01-302-35244845 INTERCHANGEABLE
Parts Kit,seat
H.o. Bostrom Company, Inc. Dba Ho Bostrom Co Inc
4320-01-498-51304845 INTERCHANGEABLE
Connector,fluid,pump
Amw Cuyuna Engine Co. Inc Dba Two Stroke International
6640-01-580-13964845 INTERCHANGEABLE
Pipette Tips 200UL
Corning Incorporated Dba Corning Incorporated
Cross-Reference Index
Part NumberManufacturer
6505A2 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
GG6505A2 Ford Motor Company (USA)
GG505A Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
4845 PRIMARY Eaton Corporation (USA)
GG6505A2 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
A296499 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
GG6505 Ford Motor Company (USA)
GG6505A1 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
GG505A Ford Motor Company (USA)
GG6505 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
GG6505A1 Ford Motor Company (USA)
6505A2 Ford Motor Company (USA)
B258312 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
Related Parts
1660-00-055-3444INTERCHANGEABLE
SLEEVE,SEAL COUPLER
4845
5905-00-270-6754INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5935-00-321-5055INTERCHANGEABLE
JACK ASSY,TELEPHONE
4845
5950-00-825-6440INTERCHANGEABLE
COIL,RADIO FREQUENCY
5012B
3040-00-977-3232INTERCHANGEABLE
BRACKET,EYE,NONROTATING SHAFT
2540-01-302-3524INTERCHANGEABLE
PARTS KIT,SEAT
4845
4320-01-498-5130INTERCHANGEABLE
CONNECTOR,FLUID,PUMP
4845
6640-01-580-1396INTERCHANGEABLE
PIPETTE TIPS 200UL
4845

Frequently Asked Questions

What is NSN 2805-00-350-4970?

NSN 2805-00-350-4970 is a Valve,poppet,engine, manufactured by Eaton Corporation, classified under FSC 2805 (No Item Name Available). Status: active.

What are the part numbers for NSN 2805-00-350-4970?

NSN 2805-00-350-4970 has 13 cross-referenced part numbers: 6505A2 (Ford Motor Co Ford Parts and Service Div Government Part Sales), GG6505A2 (Ford Motor Company), GG505A (Ford Motor Co Ford Parts and Service Div Government Part Sales), 4845 (Eaton Corporation), GG6505A2 (Ford Motor Co Ford Parts and Service Div Government Part Sales) and 8 more.

What NSN replaces 2805-00-350-4970?

There are 8 known substitutes for 2805-00-350-4970: 1660-00-055-3444, 5905-00-270-6754, 5935-00-321-5055 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4845?

Key specifications for 4845: Groove Width: 0.3150 INCHES MINIMUM AND 0.3250 INCHES MAXIMUM IN; Head Height: 0.1700 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN; Head Style: CONCAVE; Neck Radius: 0.8200 INCHES NOMINAL IN. 17 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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