BM62440

View detailed technical data, stock status, and sourcing information for: BM62440
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-00-958-0355

Item Name Code

16509

Assigment Date

01/01/1962 (64 years ago)

finished surface finish, 4.095 inches nominal diameter, hat head style, 1.4990 inches nominal pinhole diameter, 4.887 inches nominal overall 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: hat
Overall Height: 4.887 inches nominal
Diameter: 4.095 inches nominal
Pinhole Diameter: 1.4990 inches nominal
Surface Finish: finished
Finished Size Designation: standard
Skirt Type: solid
Skirt Bottom Cutaway Feature: not included
Ring Groove Quantity: 4
Ring Groove Width: 0.1890 inches minimum and 0.1900 inches maximum 4th ring
Ring Groove Width: 0.1070 inches nominal 1st ring
Ring Groove Width: 0.1070 inches nominal 2nd ring
Ring Groove Width: 0.1090 inches nominal 3rd ring
Groove Taper Angle: 15 degree 8 minutes porm @0 degree 8 @minutes including angle
Ring Groove Diameter: 3.720 inches minimum and 3.750 inches maximum 1st ring
Ring Groove Diameter: 3.720 inches minimum and 3.750 inches maximum 2nd ring
Ring Groove Diameter: 3.720 inches minimum and 3.750 inches maximum 3rd ring
Ring Groove Diameter: 3.682 inches minimum and 3.692 inches maximum 4th ring
Oil Groove: not included
Distance From Pin Hole Center To Extreme Top: 3.010 inches minimum and 3.014 inches maximum
Pin Hole Bushing: not included
Distance Between Pin Bosses: 1.315 inches minimum and 1.345 inches maximum
Retaining Ring Groove: included
Pin: included
Pin Type For Which Designed: floating
Ring: not included
Carbon Groove: not included
Material: aluminum alloy
Surface Treatment: tin
Weight: 57.340 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
BM62440	Internal Combustion Engin Piston

FAQs

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

What is the FSCG of the NSN 2815-00-958-0355?

The FSCG of the NSN 2815-00-958-0355 is 2815

Does the NSN 2815-00-958-0355 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-00-958-0355 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 2815-00-958-0355 contain precious materials?

Precious metal content is unknown

Does NSN 2815-00-958-0355 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 2815-00-958-0355 was assigned to the Federal Catalog?

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