4B1282-A

View detailed technical data, stock status, and sourcing information for: 4B1282-A
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-00-739-5902

Item Name Code

15884

Assigment Date

01/01/1961 (65 years ago)

A mushroom or tulip-shaped item having a circular head with a conical face and an extended stem used to regulate the flow of incoming fuel-air mixture or air into the combustion chamber or exhaust gases from the combustion chamber of a reciprocating internal combustion engine.

flat head style, 0.5780 inches nominal groove diameter, 45.0 chamfer angle in deg, 0.0320 inches nominal chamfer length, 0.3120 inches nominal 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: 0.3120 inches nominal
Chamfer Angle In Deg: 45.0
Groove Diameter: 0.5780 inches nominal
Chamfer Length: 0.0320 inches nominal
Groove Width: 0.2500 inches nominal
Outside Diameter: 3.6250 inches nominal
Seat Angle In Deg: 45.0
Stem Style: grooved
Carbon Relief Groove: not included
Neck Radius: 0.6250 inches nominal
Stem Length: 12.2500 inches nominal
Stem Diameter: 0.6870 inches nominal
Distance From Groove To Stem End: 0.4370 inches nominal
Material And Location: unable to decode

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
4B1282-A	Engine Poppet Valve

FAQs

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

What is the FSCG of the NSN 2815-00-739-5902?

The FSCG of the NSN 2815-00-739-5902 is 2815

Does the NSN 2815-00-739-5902 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-00-739-5902 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 2815-00-739-5902 contain precious materials?

Precious metal content is unknown

Does NSN 2815-00-739-5902 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 2815-00-739-5902 was assigned to the Federal Catalog?

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