4M71A7 Self-Aligning Plain Bearing

Comprehensive specifications and application details for: 4M71A7 Self-Aligning Plain Bearing.

Summary

Explore detailed summary information for bearing: 4M71A7. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: 4M71A7
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-00-052-4939
Item Name Code: 13208
Federal Item Identification Guide: A045A0
Assigment Date: 01/01/1963

A detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The item consists of a bored precision ground ball (or spherical plain bearing) around which an outer ring is fitted. The assembly may be either separable or nonseparable. Excludes:bearing, plain, rod end and bearing, plain, spherical.

0.9057 inches minimum and 0.9062 inches maximum outer member outside diameter, copper alloy outer race member material, 0.4320 inches minimum and 0.4370 inches maximum inner member width, steel inner member material, 0.4370 inches minimum and 0.4375 inches maximum bore diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-052-4939 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Diameter: 0.4370 inches minimum and 0.4375 inches maximum
Inner Member Width: 0.4320 inches minimum and 0.4370 inches maximum
Material: copper alloy outer race member
Material: steel inner member
Outer Member Outside Diameter: 0.9057 inches minimum and 0.9062 inches maximum
Outer Member Width: 0.3380 inches nominal
Style Designator: without insert or liner
Surface Treatment: chromium inner member

Replaces

The NSN 3120-00-052-4939 is used in place of the following discontinued or alternate items:

NSN	Name	Date
3120-00-191-3927	No Name Available	05/01/1976

Frequently Asked Questions

Find quick answers to common questions about bearing: 4M71A7. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-00-052-4939?: The FSCG of the NSN 3120-00-052-4939 is 3120

Does the NSN 3120-00-052-4939 have a Schedule B code assigned?: Yes, the Schedule B code is 8482300040

Does NSN 3120-00-052-4939 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 3120-00-052-4939 contain precious materials?: Precious metal content is unknown

Does NSN 3120-00-052-4939 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.