The Bearing,ball,airframe, cataloged under National Stock Number 3110-00-142-4337, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Rbc Aircraft Products, Inc.. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 20 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-142-4337 |
| Primary Part Number | B544FS160 |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rbc Aircraft Products, Inc. |
| Status | ACTIVE |
| Outer Ring Width | 0.2500 INCHES NOMINAL IN |
| Style Designator | SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE |
| Overall Outside Diameter | 2.2500 INCHES NOMINAL IN |
| Load Direction | RADIAL |
| Bore Diameter | 1.8125 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Lubrication Material Document and Classification | MIL-G-3278 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.2810 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B544FS160 | Jamaica Bearings Co., Inc. Dba Jamaica Bearings Co., Inc. (USA) |
| B544 | Mpb Corp Div Timken Super Precision (USA) |
| B544FS160 PRIMARY | Rbc Aircraft Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 301276-1 | 5/9 Secondary reference Lockheed Martin Librascope Corporation |
| 12J33 | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
| B544 | 5/9 Secondary reference Fag Bearings Corporation |
| B544 | 5/9 Secondary reference Schatz Bearing Corporation Dba Schatz Bearing Corp |
| 763414-1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| B544 | 5/9 Secondary reference Shuster Corporation |
| B544 | 5/9 Secondary reference A. O. Smith Corporation Dba a O Smith Corp |
| B544DDNFC | 5/9 Secondary reference Industrial Tectonics Bearings Corporation Dba Rbc Bearings Inc Div Industrial Tectonics Bearings |
| 193397-6 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 177030-7 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 156084 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| B544 | 5/9 Secondary reference Skf Usa Inc. |
| 4508-65 | 5/9 Secondary reference Breeze-Eastern Llc |
| 5510799 | 5/9 Secondary reference Aeroproducts Opns of Allison Div of General Motors Corp |
| B544 | 5/2 Secondary reference U.S. Government activity |
| B544X0B | C/1 Advisory reference — outside the item-of-supply concept Anti-Friction Bearing Mfg Assn Inc the |
| B544 | 5/9 Secondary reference Timken Co Div the Timken Company |
| Y57431 | 5/9 Secondary reference Eastman Kodak Co |
| B544FS160 | 5/9 Secondary reference Timken Co Div the Timken Company |
| BB116 | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
NSN 3110-00-142-4337 is a Bearing,ball,airframe, manufactured by Rbc Aircraft Products, Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-142-4337 has 3 manufacturer part numbers on file: B544FS160 (Jamaica Bearings Co., Inc. Dba Jamaica Bearings Co., Inc.), B544 (Mpb Corp Div Timken Super Precision), B544FS160 (Rbc Aircraft Products, Inc.).
6 possible matches (shared part number, not a government interchangeability claim): 3030-00-246-0134, 5305-00-930-3427, 5955-01-011-0767. Verify interchangeability with system specifications before substitution.
Key specifications for B544FS160: Outer Ring Width: 0.2500 INCHES NOMINAL IN; Style Designator: SINGLE ROW, TORQUE TUBE TYPE, W/OR W/O CLOSURE; Overall Outside Diameter: 2.2500 INCHES NOMINAL IN; Load Direction: RADIAL. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.