A-254-294 ITEM NO. 21NT Annular Ball Bearing

Comprehensive specifications and application details for: A-254-294 ITEM NO. 21NT Annular Ball Bearing.

Summary

Explore detailed summary information for bearing: A-254-294 ITEM NO. 21NT. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number: A-254-294 ITEM NO. 21NT
Federal Supply Classification: 3110 Unmounted Antifriction Bearings
(NSN) National Stock Number: 3110-00-987-3723
Item Name Code: 00014
Federal Item Identification Guide: A044A0
Assigment Date: 01/01/1962

A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see bearing,ball,duplex. Excludes:bearing,ball,airframe.

straight bore shape, zzzw criticality code justification, tight internal fit-up designation, annual ball bearing for quiet operation application to submarine usage departure from cited document, 1.3778 inches minimum and 1.3780 inches maximum bore diameter

Datasheet

Below are the comprehensive technical specifications for bearing: 3110-00-987-3723 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Diameter: 1.3778 inches minimum and 1.3780 inches maximum
Bore Shape: straight
Criticality Code Justification: zzzw
Departure From Cited Document: annual ball bearing for quiet operation application to submarine usage
Internal Fit-Up Designation: tight
Load Direction: radial
Lubrication Material Document And Classification: mil-g-18709 mil spec single material response
Lubrication Material: grease
Overall Outside Diameter: 3.1494 inches minimum and 3.1496 inches maximum
Overall Width: 0.8248 inches minimum and 0.8268 inches maximum
Material: steel overall
Nondefinitive Spec/Std Data: 111 type and 1 class
Retainer Fabrication Method: pressed
Style Designator: non-loading groove, non-separable
Surface Finish: ground

Replaces

The NSN 3110-00-987-3723 is used in place of the following discontinued or alternate items:

NSN	Name	Date
3110-00-183-5850	No Name Available	04/18/1969
3110-00-791-1707	No Name Available	04/23/1969
3110-00-862-6970	No Name Available	01/01/1960
3110-01-052-1825	No Name Available	03/01/1980

Frequently Asked Questions

Find quick answers to common questions about bearing: A-254-294 ITEM NO. 21NT. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3110-00-987-3723?: The FSCG of the NSN 3110-00-987-3723 is 3110

Does the NSN 3110-00-987-3723 have a Schedule B code assigned?: Yes, the Schedule B code is 8482105028

Does NSN 3110-00-987-3723 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 3110-00-987-3723 contain precious materials?: Precious metal content is unknown

Does NSN 3110-00-987-3723 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.