ADH5A

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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-00-338-7986

Item Name Code

16509

Assigment Date

01/01/1963 (63 years ago)

8.438 inches nominal overall height, 5.250 inches nominal diameter, hole 6th ring oil passage type, dome head style, finished surface finish

Product Characteristics

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

Head Style: dome
Overall Height: 8.438 inches nominal
Diameter: 5.250 inches nominal
Oil Passage Type: hole 6th ring
Surface Finish: finished
Finished Size Designation: standard
Skirt Type: solid
Skirt Bottom Cutaway Feature: not included
Ring Groove Quantity: 6
Ring Groove Width: 0.1875 inches nominal 5th ring
Ring Groove Width: 0.1875 inches nominal 6th ring
Ring Groove Width: 0.2500 inches nominal 4th ring
Ring Groove Width: 0.2810 inches nominal 1st ring
Ring Groove Width: 0.2810 inches nominal 2nd ring
Ring Groove Width: 0.2810 inches nominal 3rd ring
Ring Groove Diameter: 4.874 inches nominal 1st ring
Ring Groove Diameter: 4.874 inches nominal 2nd ring
Ring Groove Diameter: 4.874 inches nominal 3rd ring
Ring Groove Diameter: 4.874 inches nominal 4th ring
Ring Groove Diameter: 4.874 inches nominal 5th ring
Ring Groove Diameter: 4.874 inches nominal 6th ring
Oil Groove: included
Pin Hole Bushing: not included
Retaining Ring Groove: not included
Pin: not included
Pin Type For Which Designed: locking
Ring: not included
Carbon Groove: not included
Special Features: no piston pinhole,designed forcarrier insert withfloating bushingtype rod
Material: steel
Weight: 234.0 ounces

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
ADH5A	Internal Combustion Engin Piston
CADH5A	Internal Combustion Engin Piston

FAQs

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

What is the FSCG of the NSN 2815-00-338-7986?

The FSCG of the NSN 2815-00-338-7986 is 2815

Does the NSN 2815-00-338-7986 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-00-338-7986 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 2815-00-338-7986 contain precious materials?

Precious metal content is unknown

Does NSN 2815-00-338-7986 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 2815-00-338-7986 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963