# NSN 3110-01-542-1975: Bearing, Ball, Annular

NSN 3110-01-542-1975 (also written 3110015421975; NIIN 01-542-1975) is a bearing, ball, annular in Federal Supply Class 3110, Bearings, Antifriction, Unmounted. 3 manufacturer part numbers from 3 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 3110-01-542-1975 (3110015421975)
- NIIN: 01-542-1975 (015421975)
- Item name: BEARING,BALL,ANNULAR
- Federal Supply Class: [FSC 3110 Bearings, Antifriction, Unmounted](https://nsnexplorer.com/fsc/3110/)
- Federal Supply Group: [FSG 31](https://nsnexplorer.com/group/31/)
- Acquisition method suffix code: AMSC B: must be bought from the sources named on a source control or selected item drawing. (observed 2026-10-10)
- Acquisition method code: 1

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABXV | BORE DIAMETER | INCHES NOMINAL 1.8500 |
| AGAV | END ITEM IDENTIFICATION | MV-22 AIRCRAFT |
| AGVU | INNER RING WIDTH | INCHES NOMINAL 0.7875 |
| CRTL | CRITICALITY CODE JUSTIFICATION | AGAV |
| CTHY | CONTACT ANGLE | DEGREES MINIMUM 23.5 AND DEGREES MAXIMUM 26.5 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | BEARING,BALL |
| FEAT | SPECIAL FEATURES | RACE MATERIAL: VIM-VAR M-50 PER AMS 6491; RACE HARDNESS: RC 60-64; BALL MATERIAL: VIM-VAR M-50 PER AMS 6491; BALL HARDNESS: RC 60-64; CAGE MATERIAL: ALLOY STEEL 4340 PER AMS 6415 OR AMS 6414;CAGE HARDNESS: RC 28-40;CAGE PLATING MATERIAL: SILVER PER AMS 2412;CAGE PLATING THICKNESS: .001-.002" |
| MATT | MATERIAL | BALL STEEL |
| MATT | MATERIAL | CAGE STEEL COMP 4340 |
| MATT | MATERIAL | RETAINING PLATE SILVER |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | BALL ASSN STD ALL MATERIAL RESPONSES A-S 6491 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | RETAINER ASSN STD ALL MATERIAL RESPONSES A-S 2412 |
| PMLC | PRECIOUS MATERIAL AND LOCATION | SILVER CAGE LATING -ATERIAL |
| PRMT | PRECIOUS MATERIAL | SILVER |
| PRPY | PROPRIETARY CHARACTERISTICS | PACS |
| SPCL | SPECIAL TEST FEATURES | CAGE OUTSIDE DIAMETER CLEARANCE: .006-.011", CAGE POCKET TO BALL DIAMETRAL CLEARANCE: .010-.017",CAGE BALL POCKET MISLOCATION TO TRUE POSITION: .008 DIAMETER MAXIMUM; CAGE END FACE PARALLELISM: .004" MAXIMUM, OUTER RACE SHOULDER DIAMETER: 1.622-1.624";INNER RACE SHOULDER DIAMETER: 1.251-1.253";RACEWAY CORNER RADII AT SHOULDER AND SPLIT FACE: .003-.008";INNER RACE SHOULDER OUTSIDE DIAMETER TO BORE RUNOUT: .0005" FIM; OUTER RACE SHOULDER INTERNAL DIAMETER TO OUTSIDE DIAMETER RUNOUT: .0005" FIM;NUMBER OF BALLS: 10; BALL DIAMETER/GRADE: .375/10";PITCH DIAMETER (REF): 1.417";END PLAY: .0055-.11" (SHIM OUT);SHIM THICKNESS: .0016-.0024"; INTERNAL RADIAL CLEARANCE: .0017-.0025" (SHIM OUT) |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 4502138 | 55820 | RTX CORPORATION DIV PRATT & WHITNEY | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4502138 | 70854 | SCHAEFFLER AEROSPACE USA CORP DIV SCHAEFFLER AEROSPACE USA CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 4502138 | 78118 | MPB CORPORATION DBA MPB CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=3110015421975&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=3110015421975
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/3110-01-542-1975/
JSON: https://nsnexplorer.com/api/nsn/3110-01-542-1975.json