BB21721 Sleeve Bearing

Comprehensive specifications and application details for: BB21721 Sleeve Bearing.

Summary

Explore detailed summary information for bearing: BB21721. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: BB21721
Federal Supply Classification: 3120 Unmounted Plain Bearings
(NSN) National Stock Number: 3120-00-706-3734
Item Name Code: 13205
Federal Item Identification Guide: A045A0
Assigment Date: 01/01/1963

A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. It must have a visible or detectable means of lubrication or be self-lubricated. The over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. Includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. See also bushing, sleeve; spacer, sleeve; and washer (as modified). Excludes:pin, hollow.

3.7530 inches minimum and 3.7560 inches maximum body outside diameter, 0.5000 inches nominal first hole diameter, 2 hole antirotation/lubrication type and quantity, square all corners corner shape, 3.2570 inches minimum and 3.2600 inches maximum body inside diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-00-706-3734 . Find dimensions, materials, tolerances, performance characteristics, etc.

Antirotation/Lubrication Type And Quantity: 2 hole
Body Inside Diameter: 3.2570 inches minimum and 3.2600 inches maximum
Body Outside Diameter: 3.7530 inches minimum and 3.7560 inches maximum
Corner Shape: square all corners
Hole Diameter: 0.5000 inches nominal first
Lubricant Accommodation Style: grooved closed both ends
Overall Length: 4.1250 inches nominal
Material Document And Classification: sae assn std single material response overall
Material: copper alloy 937 overall
Style Designator: solid, plain, no outside flanges
Surface Groove Location And Quantity: 2 internal

Frequently Asked Questions

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What is the FSCG of the NSN 3120-00-706-3734?: The FSCG of the NSN 3120-00-706-3734 is 3120

Does the NSN 3120-00-706-3734 have a Schedule B code assigned?: Yes, the Schedule B code is 8482997090

Does NSN 3120-00-706-3734 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 3120-00-706-3734 contain precious materials?: Precious metal content is unknown

Does NSN 3120-00-706-3734 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.