The Bearing,ball,rod End, cataloged under National Stock Number 3110-00-628-4055, 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-628-4055 |
| Primary Part Number | MS21151-9C |
| Item Name | Bearing,ball,rod End |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Shank Diameter | 0.3750 INCHES NOMINAL IN |
| Shank Thread Length | 1.1250 INCHES NOMINAL IN |
| Bearing Seal Type | CONTACT |
| Lubrication Material | OIL |
| Outer Ring Width | 0.4380 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,CL 2 FED SPEC SINGLE TREATMENT RESPONSE ALL EXTERNAL/EXPOSED METAL SURFACES |
| Style Designator | DOUBLE ROW, STAGGERED, BALL |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE ROD END BODY |
| Material Document and Classification | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE BALL |
| Material Document and Classification | AMS 3652 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 3666 ASSN STD SINGLE MATERIAL RESPONSE SEAL |
| Material Document and Classification | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE INNER RING |
| Overall Outside Diameter | 0.9380 INCHES NOMINAL IN |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Self-Alignment Angle | 10.00 DEGREES NOMINAL |
| Shank Style | EXTERNALLY THREADED |
| Alignment Type | SELF-ALIGNING |
| Surface Treatment | CADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES |
| Seal Quantity | 2 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Bore Diameter | 0.2500 INCHES NOMINAL IN |
| Length From Bore Center to Shank End | 1.8750 INCHES NOMINAL IN |
| Material | STEEL COMP E52100 BALL |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAL |
| Material | STEEL COMP 4130 ROD END BODY |
| Material | STEEL COMP E52100 INNER RING |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| MS21151-9C PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS24451 | 5/9 Secondary reference U.S. Government activity |
| REP4ML6-4FS464 | 5/1 Secondary reference Roller Bearing Company of America, Inc. |
| MS21151-9C | 5/1 Secondary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| AS24451 | 5/1 Secondary reference Sae International Dba Sae International |
| MS21151-9C | 3/9 Design control — primary reference U.S. Government activity |
| MS21151-9C | 5/9 Secondary reference U.S. Government activity |
| REP4MKL6-8F | 5/1 Secondary reference Roller Bearing Company of America, Inc. |
| REP4ML6-4FS428 | C/1 Advisory reference — outside the item-of-supply concept Timken Co Div the Timken Company |
| REP4ML6-4FS464 | 5/9 Secondary reference Timken Co Div the Timken Company |
NSN 3110-00-628-4055 is a Bearing,ball,rod End, manufactured by Sae International Dba Sae International, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-628-4055 has 1 manufacturer part number on file: MS21151-9C (Sae International Dba Sae International).
1 possible match (shared part number, not a government interchangeability claim): 3110-00-929-9952. Verify interchangeability with system specifications before substitution.
Key specifications for MS21151-9C: Shank Diameter: 0.3750 INCHES NOMINAL IN; Shank Thread Length: 1.1250 INCHES NOMINAL IN; Bearing Seal Type: CONTACT; Lubrication Material: OIL. 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.