The Bearing,roller,rod End, cataloged under National Stock Number 3110-01-368-2589, 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 21 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-368-2589 |
| Primary Part Number | MS21221-4 |
| Item Name | Bearing,roller,rod End |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Shank Diameter | 0.3750 INCHES MAXIMUM IN |
| Shank Thread Length | 0.9800 INCHES MINIMUM AND 1.0020 INCHES MAXIMUM IN |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.3750 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.3750 INCHES IN |
| Self-Alignment Angle | 10.00 DEGREES NOMINAL |
| Shank Style | EXTERNALLY THREADED |
| Alignment Type | SELF-ALIGNING |
| Surface Treatment | CADMIUM EXPOSED SURFACES AS MOUNTED |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Bore Diameter | 0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Length From Bore Center to Shank End | 1.8300 INCHES MINIMUM AND 1.8500 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAL |
| Material | STEEL COMP E52100 ROLLER |
| Material | STEEL COMP E52100 INNER RING |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Self-Alignment Location | INTERNAL |
| Lubrication Material Document and Classification | MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.4950 INCHES MINIMUM AND 0.5000 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 |
|---|---|
| MS21221-4 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS21221 | 5/9 Secondary reference U.S. Government activity |
| AS8952 | 5/9 Secondary reference U.S. Government activity |
| MS21221-4 | 5/9 Secondary reference U.S. Government activity |
| AS8952 | 5/1 Secondary reference Sae International Dba Sae International |
| MS21221-4 | 3/9 Design control — primary reference U.S. Government activity |
| AS21221 | 5/1 Secondary reference Sae International Dba Sae International |
NSN 3110-01-368-2589 is a Bearing,roller,rod End, manufactured by Sae International Dba Sae International, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-368-2589 has 1 manufacturer part number on file: MS21221-4 (Sae International Dba Sae International).
Key specifications for MS21221-4: Shank Diameter: 0.3750 INCHES MAXIMUM IN; Shank Thread Length: 0.9800 INCHES MINIMUM AND 1.0020 INCHES MAXIMUM IN; Lubrication Material: GREASE; Outer Ring Width: 0.3750 INCHES MAXIMUM IN. 21 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.