The Bearing,ball,rod End, cataloged under National Stock Number 3110-01-116-9309, 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 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-01-116-9309 |
| Primary Part Number | MS21151-6C |
| Item Name | Bearing,ball,rod End |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Shank Diameter | 0.2500 INCHES NOMINAL IN |
| Shank Thread Length | 0.0907 INCHES MINIMUM AND 0.0962 INCHES MAXIMUM IN |
| Bearing Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.4280 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,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 | 66 FED STD SINGLE MATERIAL RESPONSE RETAINER |
| Material Document and Classification | MIL-S-7420 MIL SPEC SINGLE MATERIAL RESPONSE INNER RING |
| Material Document and Classification | AMS3652 ASSN STD 1ST MATERIAL RESPONSE OR AMS3666 ASSN STD 2ND MATERIAL RESPONSE SEAL |
| Overall Outside Diameter | 0.7710 INCHES MINIMUM AND 0.7900 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 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 | 28 |
| Bore Diameter | 0.1897 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN |
| Length From Bore Center to Shank End | 1.8020 INCHES MINIMUM AND 1.8220 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 BALL |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OR PLASTIC POLYTETRAFLUOROETHYLENE AND GLASS FIBER SEAL |
| Material | STEEL COMP 301 RETAINER |
| Material | STEEL COMP 4130 ROD END BODY |
| 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 |
|---|---|
| MS21151-6C | Rbc Aircraft Products, Inc. (USA) |
| RAP3MS4-2FS464 | Rbc Aircraft Products, Inc. (USA) |
| MS21151-6C PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| REP3MK4-6F | 5/1 Secondary reference Roller Bearing Company of America, Inc. |
| AS21151 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS21151-6C | 5/9 Secondary reference U.S. Government activity |
| AS21151 | 5/9 Secondary reference U.S. Government activity |
| MS21151-6C | 5/9 Secondary reference U.S. Government activity |
| RAP3MS4-2FS464 | 5/9 Secondary reference Timken Co Div the Timken Company |
NSN 3110-01-116-9309 is a Bearing,ball,rod End, manufactured by Sae International Dba Sae International, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-116-9309 has 3 manufacturer part numbers on file: MS21151-6C (Rbc Aircraft Products, Inc.), RAP3MS4-2FS464 (Rbc Aircraft Products, Inc.), MS21151-6C (Sae International Dba Sae International).
Key specifications for MS21151-6C: Shank Diameter: 0.2500 INCHES NOMINAL IN; Shank Thread Length: 0.0907 INCHES MINIMUM AND 0.0962 INCHES MAXIMUM IN; Bearing Seal Type: CONTACT; Lubrication Material: GREASE. 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.