BM71249

View detailed technical data, stock status, and sourcing information for: BM71249

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BM71249
Federal Supply Group
Engines, Turbines, and Components
Federal Supply Classification
2815 Diesel Engines and Components
National Stock Number
2815-00-994-4430
Item Name Code
60266
Assigment Date
01/01/1963 (63 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes:undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

forged fabrication method, 1.500 inches nominal end thickness, 2 bolt mounted solid sleeve shaft connecting end style, 1.375 inches nominal edge radius, flat type cross-sectional shape style

Product Characteristics

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

Cross-Sectional Shape Style
flat type
Fabrication Method
forged
Shaft Connecting End Style
2 bolt mounted solid sleeve
End Thickness
1.500 inches nominal
Edge Radius
1.375 inches nominal
End Hole Inside Diameter
1.750 inches nominal
Piston Connecting End Bearing
included
Bearing Replaceability
nonreplaceable
Piston Connecting End Lubrication Drill Feature
included
Piston Connecting End Lubrication Method
full forced-feed
Shaft Connecting End Bearing
not included
Shaft Connecting End Hole Inside Diameter
3.000 inches nominal
Shaft Connecting End Edge Radius
2.175 inches nominal
Shaft Connecting End Width
4.500 inches nominal
Shaft Connecting End Thickness
1.535 inches nominal
Shaft Connecting End Lubrication Drill Feature
not included
Shaft Connecting End Lubrication Method
splash
Center To Center Effective Length
8.250 inches nominal
Body Width At Piston Connecting End
1.350 inches nominal
Body Width At Shaft Connecting End
1.750 inches nominal
Body Thickness At Piston Connecting End
0.935 inches nominal
Body Thickness At Shaft Connecting End
0.875 inches nominal
Piston End Connection Style
small engine and automotive standard
Material
steel

Replaces National Stock Numbers

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

NSN Name Date
2815-00-085-7433 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
AR07778 Piston Connecting Rod
BM71249 Piston Connecting Rod
BM76237 Piston Connecting Rod

FAQs

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

What is the FSCG of the NSN 2815-00-994-4430?
The FSCG of the NSN 2815-00-994-4430 is 2815
Does the NSN 2815-00-994-4430 have a Schedule B code assigned?
Yes, the Schedule B code is 8409998000
Does NSN 2815-00-994-4430 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 2815-00-994-4430 contain precious materials?
Precious metal content is unknown
Does NSN 2815-00-994-4430 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 2815-00-994-4430 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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