The Bearing,ball,airframe, cataloged under National Stock Number 3110-01-356-8991, 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 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-356-8991 |
| Primary Part Number | AS27645-4AG |
| Item Name | Bearing,ball,airframe |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Bearing Seal Type | CONTACTCONTACT |
| Lubrication Material | GREASEGREASE |
| Outer Ring Width | 0.2190 INCHES NOMINAL0.2190 INCHES NOMINAL IN |
| Style Designator | SINGLE ROW SELF ALIGNING SINGLE ROW INNER RING EXTENDED BOTH SIDESSINGLE ROW SELF ALIGNING SINGLE ROW INNER RING EXTENDED BOTH SIDES |
| Overall Outside Diameter | 0.7500 INCHES NOMINAL0.7500 INCHES NOMINAL IN |
| Load Direction | RADIALRADIAL |
| Alignment Type | SELF-ALIGNINGSELF-ALIGNING |
| Seal Quantity | 22 |
| Standard Tolerance Designation | AFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGSAFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS |
| Bore Diameter | 0.2500 INCHES NOMINAL0.2500 INCHES NOMINAL IN |
| Self-Alignment Location | INTERNALINTERNAL |
| Lubrication Material Document and Classification | MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSEMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.2810 INCHES NOMINAL0.2810 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 |
|---|---|
| AS27645-4AG PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS27645 | 5/9 Secondary reference U.S. Government activity |
| AS27645-4AG | 3/9 Design control — primary reference U.S. Government activity |
| MS27645-4AG | 5/9 Secondary reference U.S. Government activity |
| AS27645 | 5/1 Secondary reference Sae International Dba Sae International |
NSN 3110-01-356-8991 is a Bearing,ball,airframe, manufactured by Sae International Dba Sae International, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-356-8991 has 1 manufacturer part number on file: AS27645-4AG (Sae International Dba Sae International).
Key specifications for AS27645-4AG: Bearing Seal Type: CONTACTCONTACT; Lubrication Material: GREASEGREASE; Outer Ring Width: 0.2190 INCHES NOMINAL0.2190 INCHES NOMINAL IN; Style Designator: SINGLE ROW SELF ALIGNING SINGLE ROW INNER RING EXTENDED BOTH SIDESSINGLE ROW SELF ALIGNING SINGLE ROW INNER RING EXTENDED BOTH SIDES. 13 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.