138886

View detailed technical data, stock status, and sourcing information for: 138886
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-00-994-4438

Item Name Code

15884

Assigment Date

01/01/1962 (64 years ago)

1.8700 inches minimum and 1.8800 inches maximum outside diameter, 0.2150 inches minimum and 0.2250 inches maximum head height, 0.0156 inches nominal chamfer length, 45.0 chamfer angle in deg, flat head style

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: 0.2150 inches minimum and 0.2250 inches maximum
Chamfer Angle In Deg: 45.0
Chamfer Length: 0.0156 inches nominal
Outside Diameter: 1.8700 inches minimum and 1.8800 inches maximum
Minor Outside Diameter: 0.4315 inches minimum and 0.4345 inches maximum
Minor Diameter Length: 0.6400 inches minimum and 0.6600 inches maximum
Seat Angle In Deg: 30.0
Stem Style: double grooved
Carbon Relief Groove: included
Neck Radius: 0.6250 inches nominal
Stem Length: 6.3750 inches nominal
Stem Diameter: 0.4500 inches minimum and 0.4510 inches maximum
Distance From First Groove To Stem End: 0.3437 inches nominal
Distance From Second Groove To Stem End: 0.5312 inches nominal
First Groove Diameter: 0.3630 inches minimum and 0.3690 inches maximum
Second Groove Diameter: 0.3630 inches minimum and 0.3690 inches maximum
First Groove Width: 0.5312 inches nominal
Second Groove Width: 0.6250 inches nominal
Material And Location: unable to decode

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2815-00-973-0782	No Name Available	01/01/1960

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
138886	Engine Poppet Valve
4216707	Engine Poppet Valve

FAQs

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

What is the FSCG of the NSN 2815-00-994-4438?

The FSCG of the NSN 2815-00-994-4438 is 2815

Does the NSN 2815-00-994-4438 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-00-994-4438 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 2815-00-994-4438 contain precious materials?

Item does not contain precious metal.

Does NSN 2815-00-994-4438 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 2815-00-994-4438 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962