PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

70668Insert,engine Valve Seat

Cummins Inc. · NSN 2815-00-567-4366 · FSC 2815 · No Item Name Available
Verified by PartsTable
NSN 2815-00-567-4366 — this item is cataloged by the U.S. Government under National Stock Number 2815-00-567-4366. Primary manufacturer part number: 70668.
Features
  • Insert,engine Valve Seat — FSC 2815
  • Material: STEEL OVERALL
  • Style Designator: PLAIN
  • Seating Surface Shape: ANGULAR
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
  • Body Inside Diameter: 1.375 INCHES NOMINAL IN
  • Seat Angle in Deg: 0.500 NOMINAL
  • Body Outside Diameter: 1.690 INCHES NOMINAL IN
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 2815-00-567-4366, is classified within Federal Supply Class 2815 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Cummins Inc.. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2815-00-567-4366
Primary Part Number70668
Item NameInsert,engine Valve Seat
FSC / FSG2815 / 28 — No Item Name Available
ManufacturerCummins Inc.
StatusCANCELLED
MaterialSTEEL OVERALL
Style DesignatorPLAIN
Seating Surface ShapeANGULAR
Hardness Rating40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
Body Inside Diameter1.375 INCHES NOMINAL IN
Seat Angle in Deg0.500 NOMINAL
Body Outside Diameter1.690 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
3030-00-070-1410 INTERCHANGEABLE
Belt,round
5315-00-224-21403040-140 INTERCHANGEABLE
Pin,straight,headless
Westinghouse Electric Corp
3830-00-227-6174 INTERCHANGEABLE
Power Control Unit,tractor Mount
5342-00-356-9973R7 INTERCHANGEABLE
Clip,special
Hellermanntyton Limited Dba Staeng
3110-00-555-522637-1B1 INTERCHANGEABLE
Bearing,ball,annular
Schatz Bearing Corporation Dba Schatz Bearing Corp
4730-00-727-9627 INTERCHANGEABLE
Clamp,hose
6780-01-011-269570668 INTERCHANGEABLE
Modulator,balance
Anaren, Inc. Div Anaren Microwave Inc
5130-01-063-7508 INTERCHANGEABLE
Bur,engraving
5340-01-659-5702R7 INTERCHANGEABLE
Anode,corrosion Preventive
Camp Company of St Petersburg Inc
7035-01-668-2175 INTERCHANGEABLE
Receiver-Transmitter,digital DAT
Cross-Reference Index
Part NumberManufacturer
70668 PRIMARY Cummins Inc. (USA)
IS260 PRIMARY Eaton Corp Dba Eaton Aerospace Jackson (USA)
H65789 Cummins Inc. (USA)
A8675-47PC22 Cummins Inc. (USA)
65789 Cummins Inc. (USA)
A65789 Cummins Inc. (USA)
R7 Toledo Pickling & Steel Sales (USA)
Related Parts
3030-00-070-1410INTERCHANGEABLE
BELT,ROUND
5315-00-224-2140INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
3040-140
3830-00-227-6174INTERCHANGEABLE
POWER CONTROL UNIT,TRACTOR MOUNT
5342-00-356-9973INTERCHANGEABLE
CLIP,SPECIAL
R7
3110-00-555-5226INTERCHANGEABLE
BEARING,BALL,ANNULAR
37-1B1
4730-00-727-9627INTERCHANGEABLE
CLAMP,HOSE
6780-01-011-2695INTERCHANGEABLE
MODULATOR,BALANCE
70668
5130-01-063-7508INTERCHANGEABLE
BUR,ENGRAVING
5340-01-659-5702INTERCHANGEABLE
ANODE,CORROSION PREVENTIVE
R7
7035-01-668-2175INTERCHANGEABLE
RECEIVER-TRANSMITTER,DIGITAL DAT

Frequently Asked Questions

What is NSN 2815-00-567-4366?

NSN 2815-00-567-4366 is a Insert,engine Valve Seat, manufactured by Cummins Inc., classified under FSC 2815 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2815-00-567-4366?

NSN 2815-00-567-4366 has 7 cross-referenced part numbers: 70668 (Cummins Inc.), IS260 (Eaton Corp Dba Eaton Aerospace Jackson), H65789 (Cummins Inc.), A8675-47PC22 (Cummins Inc.), 65789 (Cummins Inc.) and 2 more.

What NSN replaces 2815-00-567-4366?

There are 10 known substitutes for 2815-00-567-4366: 3030-00-070-1410, 5315-00-224-2140, 3830-00-227-6174 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 70668?

Key specifications for 70668: Material: STEEL OVERALL; Style Designator: PLAIN; Seating Surface Shape: ANGULAR; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2815-00-567-4366 still in active supply?

NSN 2815-00-567-4366 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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