The Bearing,ball,airframe, cataloged under National Stock Number 3110-01-286-8576, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 19 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-286-8576 |
| Primary Part Number | MS27643-5G |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Bearing Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.6510 INCHES MINIMUM AND 0.6560 INCHES MAXIMUM IN |
| Style Designator | DOUBLE ROW, SELF ALIGNING |
| Overall Outside Diameter | 1.2495 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN |
| Load Direction | RADIAL |
| Alignment Type | SELF-ALIGNING |
| Surface Treatment | CADMIUM EXPOSED SURFACES AS MOUNTED |
| Seal Quantity | 2 |
| Standard Tolerance Designation | AFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS |
| Bore Diameter | 0.3123 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAL |
| Material | STEEL COMP E51100 BALL |
| Material | STEEL CORROSION RESISTING RETAINER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Self-Alignment Location | INTERNAL |
| Lubrication Material Document and Classification | MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.8070 INCHES MINIMUM AND 0.8120 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 |
|---|---|
| MS27643-5G PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS27643 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MDSP5SD702 | 5/1 Secondary reference U.S. Government activity |
| MS27643-5G | 5/9 Secondary reference U.S. Government activity |
| MS27643-5G | 5/9 Secondary reference U.S. Government activity |
| AS27643 | 5/9 Secondary reference U.S. Government activity |
| NMBDSP5-525 | 5/1 Secondary reference New Hampshire Ball Bearings Inc Div Precision Division |
| C525DSP5 | 5/1 Secondary reference U.S. Government activity |
NSN 3110-01-286-8576 is a Bearing,ball,airframe, manufactured by Sae International Dba Sae International, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-286-8576 has 1 manufacturer part number on file: MS27643-5G (Sae International Dba Sae International).
Key specifications for MS27643-5G: Bearing Seal Type: CONTACT; Lubrication Material: GREASE; Outer Ring Width: 0.6510 INCHES MINIMUM AND 0.6560 INCHES MAXIMUM IN; Style Designator: DOUBLE ROW, SELF ALIGNING. 19 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.