PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7703890Insert,engine Valve Seat

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 2805-00-691-9488 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-691-9488 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-691-9488. Primary manufacturer part number: 7703890.
Features
  • Insert,engine Valve Seat — FSC 2805
  • Seating Surface Shape: ANGULAR
  • Material: STEEL OVERALL
  • Seat Angle in Deg: 45.000 NOMINAL
  • Style Designator: PLAIN
  • Body Inside Diameter: 1.250 INCHES NOMINAL IN
  • Body Outside Diameter: 1.625 INCHES NOMINAL IN
  • 7 verified cross-references
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Mechanical power generation
  • Drive system operation
General Description

The Insert,engine Valve Seat, cataloged under National Stock Number 2805-00-691-9488, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2805-00-691-9488
Primary Part Number7703890
Item NameInsert,engine Valve Seat
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusCANCELLED
Seating Surface ShapeANGULAR
MaterialSTEEL OVERALL
Seat Angle in Deg45.000 NOMINAL
Style DesignatorPLAIN
Body Inside Diameter1.250 INCHES NOMINAL IN
Body Outside Diameter1.625 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
3040-00-133-9967R111G INTERCHANGEABLE
Ball Joint
Cablecraft Motion Controls Llc
1005-00-344-60747311907 INTERCHANGEABLE
Plate,butt
Army, United States Department of the Dba Rock Island Arsenal Jmtc
3040-00-409-7884R-111 INTERCHANGEABLE
Ball Joint
Cablecraft Motion Controls Llc
2925-00-596-9775RHA32N INTERCHANGEABLE
Spark Plug
Champion Aerospace Llc
5905-00-792-8234 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5905-00-802-966851RD1 INTERCHANGEABLE
Resistor,thermal
Gulton Industries Inc
5999-01-127-395566601-2 INTERCHANGEABLE
Contact,electrical
Te Connectivity Corporation
2530-01-245-9204F1219 INTERCHANGEABLE
Cup,hydraulic Brake Cylinder
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
6105-01-248-7965 INTERCHANGEABLE
Motor,alternating Current
5905-01-307-6233A88-6 INTERCHANGEABLE
Resistor,fixed,film
Vishay Intertechnology, Inc.
Cross-Reference Index
Part NumberManufacturer
666012 Atwood Fence Co Inc (USA)
R111 Toledo Pickling & Steel Sales (USA)
666012 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
A886 Eaton Corp Spring Div (USA)
7703890 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
1S211 Eaton Corp Dba Eaton Aerospace Jackson (USA)
IS211 PRIMARY Eaton Corp Dba Eaton Aerospace Jackson (USA)
Related Parts
3040-00-133-9967INTERCHANGEABLE
BALL JOINT
R111G
1005-00-344-6074INTERCHANGEABLE
PLATE,BUTT
7311907
3040-00-409-7884INTERCHANGEABLE
BALL JOINT
R-111
2925-00-596-9775INTERCHANGEABLE
SPARK PLUG
RHA32N
5905-00-792-8234INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5905-00-802-9668INTERCHANGEABLE
RESISTOR,THERMAL
51RD1
5999-01-127-3955INTERCHANGEABLE
CONTACT,ELECTRICAL
66601-2
2530-01-245-9204INTERCHANGEABLE
CUP,HYDRAULIC BRAKE CYLINDER
F1219
6105-01-248-7965INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5905-01-307-6233INTERCHANGEABLE
RESISTOR,FIXED,FILM
A88-6
1560-01-588-7095INTERCHANGEABLE
WALL,INSULATION
R1-11

Frequently Asked Questions

What is NSN 2805-00-691-9488?

NSN 2805-00-691-9488 is a Insert,engine Valve Seat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2805 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2805-00-691-9488?

NSN 2805-00-691-9488 has 7 cross-referenced part numbers: 666012 (Atwood Fence Co Inc), R111 (Toledo Pickling & Steel Sales), 666012 (Chrysler Realty Company Llc Dba Daimler Chrysler), A886 (Eaton Corp Spring Div), 7703890 (U S Army Tank Automotive Command Amsta-Im-Mm) and 2 more.

What NSN replaces 2805-00-691-9488?

There are 11 known substitutes for 2805-00-691-9488: 3040-00-133-9967, 1005-00-344-6074, 3040-00-409-7884 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7703890?

Key specifications for 7703890: Seating Surface Shape: ANGULAR; Material: STEEL OVERALL; Seat Angle in Deg: 45.000 NOMINAL; Style Designator: PLAIN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2805-00-691-9488 still in active supply?

NSN 2805-00-691-9488 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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