The Bearing,roller,needle, cataloged under National Stock Number 3110-01-024-7599, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Rbc Aircraft Products, Inc.. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-01-024-7599 |
| Primary Part Number | ST4M157-5 |
| Item Name | Bearing,roller,needle |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Rbc Aircraft Products, Inc. |
| Status | ACTIVE |
| Bearing Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.6200 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE INNER RING |
| Surface Treatment Document and Classification | QQ-C-320,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE ROLLER |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE WASHER |
| Surface Finish | GROUND |
| Style Designator | CAM ROLLER, HARDENED AND GROUND, NON-SEPARABLE |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE WASHER |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE INNER RING |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE ROLLER |
| Overall Outside Diameter | 0.9990 INCHES MINIMUM AND 1.0020 INCHES MAXIMUM IN |
| Alignment Type | RIGID |
| Surface Treatment | CHROMIUM OUTER RING |
| Surface Treatment | CADMIUM WASHER |
| Surface Treatment | CADMIUM INNER RING |
| Surface Treatment | CADMIUM ROLLER |
| Seal Quantity | 2 |
| Standard Tolerance Designation | AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS |
| Bore Diameter | 0.3121 INCHES MINIMUM AND 0.3127 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 ROLLER |
| Material | PLASTIC SEAL |
| Material | STEEL COMP E52100 OUTER RING |
| Material | STEEL COMP E52100 INNER RING |
| Material | STEEL COMP 1117 WASHER |
| Lubrication Material Document and Classification | MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.6875 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 |
|---|---|
| ST4M157-5 PRIMARY | Rbc Aircraft Products, Inc. (USA) |
| ST4M157-5 PRIMARY | Accurate Bushing Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| YR-1-X-CCP-155 | 5/1 Secondary reference Accurate Bushing Company, Inc. |
| ST4M157-5 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| YCRS16CP | 3/9 Design control — primary reference Timken Aerospace, Inc Dba Torrington Product |
| YCRS16CP | 5/1 Secondary reference Rbc Aircraft Products, Inc. |
NSN 3110-01-024-7599 is a Bearing,roller,needle, manufactured by Rbc Aircraft Products, Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-024-7599 has 2 manufacturer part numbers on file: ST4M157-5 (Rbc Aircraft Products, Inc.), ST4M157-5 (Accurate Bushing Company, Inc.).
Key specifications for ST4M157-5: Bearing Seal Type: CONTACT; Lubrication Material: GREASE; Outer Ring Width: 0.6200 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE INNER RING. 29 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.