4386790-2

View detailed technical data, stock status, and sourcing information for: 4386790-2
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-00-946-8072

Item Name Code

15884

Assigment Date

04/08/1966 (60 years ago)

0.0156 inches nominal chamfer length, 0.3290 inches minimum and 0.3350 inches maximum groove diameter, 0.1610 inches minimum and 0.1710 inches maximum head height, 30.0 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: 0.1610 inches minimum and 0.1710 inches maximum
Chamfer Angle In Deg: 30.0
Groove Diameter: 0.3290 inches minimum and 0.3350 inches maximum
Chamfer Length: 0.0156 inches nominal
Groove Width: 0.0950 inches minimum and 0.1050 inches maximum
Outside Diameter: 1.6190 inches minimum and 1.6290 inches maximum
Seat Angle In Deg: 30.0
Stem Style: grooved
Carbon Relief Groove: not included
Neck Radius: 0.3750 inches nominal
Stem Length: 7.1930 inches minimum and 7.2040 inches maximum
Stem Diameter: 0.3715 inches minimum and 0.3720 inches maximum
Distance From Groove To Stem End: 0.5030 inches nominal
Material And Location: unable to decode
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Below is a list of NSNs that have been officially superseded by this NSN: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
2815-00-891-7026	No Name Available	11/08/1967

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
1AC4386790-2	Engine Poppet Valve
4386790-2	Engine Poppet Valve
74386790	Engine Poppet Valve
74396887-7	Engine Poppet Valve

FAQs

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

What is the FSCG of the NSN 2815-00-946-8072?

The FSCG of the NSN 2815-00-946-8072 is 2815

Does the NSN 2815-00-946-8072 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-00-946-8072 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 2815-00-946-8072 contain precious materials?

Precious metal content is unknown

Does NSN 2815-00-946-8072 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 2815-00-946-8072 was assigned to the Federal Catalog?

It was assigned 60 years ago, on Fri, Apr 8, 1966