The Bearing,ball,airframe, cataloged under National Stock Number 3110-01-183-6632, 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 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-183-6632 |
| Primary Part Number | MDW5A3738 |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rbc Aircraft Products, Inc. |
| Status | ACTIVE |
| Lubrication Material | LUBRICANT |
| Outer Ring Width | 0.8080 INCHES MINIMUM AND 0.8130 INCHES MAXIMUM IN |
| Style Designator | DOUBLE ROW |
| Overall Outside Diameter | 0.8746 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN |
| Alignment Type | SELF-ALIGNING |
| Surface Treatment | CADMIUM EXPOSED SURFACES AS MOUNTED |
| Bore Diameter | 0.3122 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN |
| Lubrication Material Document and Classification | MIL-G-81322 MIL STD SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.9355 INCHES MINIMUM AND 0.9380 INCHES MAXIMUM 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 |
|---|---|
| MDW5A3738 PRIMARY | Rbc Aircraft Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| MDW5A3738 | 5/9 Secondary reference Timken Co Div the Timken Company |
| HS4633-5 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| MDW5 | 5/9 Secondary reference Timken Co Div the Timken Company |
| HS4633-5 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company |
NSN 3110-01-183-6632 is a Bearing,ball,airframe, manufactured by Rbc Aircraft Products, Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-183-6632 has 1 manufacturer part number on file: MDW5A3738 (Rbc Aircraft Products, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5920-01-280-0788. Verify interchangeability with system specifications before substitution.
Key specifications for MDW5A3738: Lubrication Material: LUBRICANT; Outer Ring Width: 0.8080 INCHES MINIMUM AND 0.8130 INCHES MAXIMUM IN; Style Designator: DOUBLE ROW; Overall Outside Diameter: 0.8746 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN. 9 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.