The Bearing,ball,rod End, cataloged under National Stock Number 3110-01-337-7894, 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 28 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-01-337-7894 |
| Primary Part Number | MS21151-3C |
| Item Name | Bearing,ball,rod End |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Shank Diameter | 0.2990 INCHES NOMINAL IN |
| Shank Thread Length | 1.2820 INCHES MINIMUM AND 1.3440 INCHES MAXIMUM IN |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.3970 INCHES MINIMUM AND 0.4170 INCHES MAXIMUM IN |
| Internal Clearance | 0.0004 INCHES NOMINAL RADIAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE I,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | DOUBLE ROW, BALL |
| Material Document and Classification | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE BALL |
| Material Document and Classification | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-8690 MIL SPEC 2ND MATERIAL RESPONSE OUTER RACE |
| Material Document and Classification | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-8690 MIL SPEC 2ND MATERIAL RESPONSE SHELL |
| Material Document and Classification | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE INNER RACE |
| Overall Outside Diameter | 0.9590 INCHES MINIMUM AND 0.9790 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.3750 INCHES IN |
| Shank Style | EXTERNALLY THREADED W/SLOT |
| Alignment Type | SELF-ALIGNING |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Bore Diameter | 0.1897 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN |
| Length From Bore Center to Shank End | 2.0210 INCHES MINIMUM AND 2.0410 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 BALL |
| Material | STEEL COMP E52100 INNER RACE |
| Material | STEEL COMP 4130 OR STEEL COMP 8620 OUTER RACE |
| Material | STEEL COMP 4130 OR STEEL COMP 8620 SHELL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Self-Alignment Location | EXTERNAL |
| Lubrication Material Document and Classification | MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE |
| 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 |
|---|---|
| MS21151-3C PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS21151-3C | 5/9 Secondary reference U.S. Government activity |
| AS21151 | 5/9 Secondary reference U.S. Government activity |
| MS21151-3C | 5/9 Secondary reference U.S. Government activity |
| AS21151 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 3110-01-337-7894 is a Bearing,ball,rod End, manufactured by Sae International Dba Sae International, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-337-7894 has 1 manufacturer part number on file: MS21151-3C (Sae International Dba Sae International).
Key specifications for MS21151-3C: Shank Diameter: 0.2990 INCHES NOMINAL IN; Shank Thread Length: 1.2820 INCHES MINIMUM AND 1.3440 INCHES MAXIMUM IN; Lubrication Material: GREASE; Outer Ring Width: 0.3970 INCHES MINIMUM AND 0.4170 INCHES MAXIMUM IN. 28 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.