AS1654

View detailed technical data, stock status, and sourcing information for: AS1654
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-00-364-5098

Item Name Code

15884

Assigment Date

01/01/1961 (65 years ago)

flat head style, 0.0200 inches minimum and 0.0400 inches maximum chamfer length, 60.0 chamfer angle in deg, 1.5250 inches minimum and 1.5350 inches maximum outside diameter, 0.1490 inches minimum and 0.1640 inches maximum head height

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Head Style: flat
Head Height: 0.1490 inches minimum and 0.1640 inches maximum
Chamfer Angle In Deg: 60.0
Chamfer Length: 0.0200 inches minimum and 0.0400 inches maximum
Outside Diameter: 1.5250 inches minimum and 1.5350 inches maximum
Seat Angle In Deg: 30.0
Stem Style: double grooved
Carbon Relief Groove: not included
Neck Radius: 0.5500 inches minimum and 0.5700 inches maximum
Stem Length: 5.9280 inches minimum and 6.0068 inches maximum
Stem Diameter: 0.4020 inches minimum and 0.4030 inches maximum
Distance From First Groove To Stem End: 0.2498 inches nominal
Distance From Second Groove To Stem End: 0.4926 inches minimum and 0.5126 inches maximum
First Groove Diameter: 0.3020 inches minimum and 0.3080 inches maximum
Second Groove Diameter: 0.3020 inches minimum and 0.3080 inches maximum
First Groove Width: 0.0625 inches nominal
Second Groove Width: 0.0625 inches nominal
Metallic Hardness Rating And Location: 40.0 rockwell c minimum head
Metallic Hardness Rating And Location: 40.0 rockwell c minimum stem
Metallic Hardness Rating And Location: 50.0 rockwell c maximum head
Metallic Hardness Rating And Location: 50.0 rockwell c maximum stem
Metallic Hardness Rating And Location: 52.0 rockwell c minimum tip
Fsc Application Data: diesel engine

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2815-00-627-6842	No Name Available	01/01/1963

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
60476	Engine Poppet Valve
68569	Engine Poppet Valve
A60476	Engine Poppet Valve
AS1654	Engine Poppet Valve
I-605	Engine Poppet Valve
S1639	Engine Poppet Valve
V1993	Engine Poppet Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 2815-00-364-5098?

The FSCG of the NSN 2815-00-364-5098 is 2815

Does the NSN 2815-00-364-5098 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-00-364-5098 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 2815-00-364-5098 contain precious materials?

Precious metal content is unknown

Does NSN 2815-00-364-5098 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 2815-00-364-5098 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961