The Cam Follower,needle Bearing, cataloged under National Stock Number 3110-01-286-6145, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is The Boeing Company Div Defense. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-286-6145 |
| Primary Part Number | 4M340-125 |
| Item Name | Cam Follower,needle Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Bearing Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING |
| Surface Treatment Document and Classification | QQ-C-320,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE ROLLER |
| Thread Length | 0.6250 INCHES NOMINAL IN |
| Style Designator | CAM FOLLOWER |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE ROLLER |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE STUD |
| Material Document and Classification | L-P-392 FED SPEC 1ST MATERIAL RESPONSE OR L-P-410 FED SPEC 2ND MATERIAL RESPONSE SEAL |
| Overall Outside Diameter | 1.2490 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN |
| Features Provided | LUBRICATION HOLE |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Specification/standard Data | 76301-4-340 MANUFACTURERS STANDARD |
| Stud Length | 1.2500 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OUTER RING |
| Surface Treatment | CHROMIUM ROLLER |
| Seal Quantity | 2 |
| Thread Class | 2A A |
| Standard Tolerance Designation | AFBMA STD TOLERANCE FOR CAN FOLLWER NEEDLE BEARING |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP E52100 ROLLER |
| Material | STEEL COMP E52100 OUTER RING |
| Material | PLASTIC ACETAL OR PLASTIC POLYAMIDE NYLON SEAL |
| Material | STEEL COMP E52100 STUD |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 4M340-125 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| CCFH1-1/4S-CP | 3/2 Design control — primary reference U.S. Government activity |
NSN 3110-01-286-6145 is a Cam Follower,needle Bearing, manufactured by The Boeing Company Div Defense, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-286-6145 has 1 manufacturer part number on file: 4M340-125 (The Boeing Company Div Defense).
Key specifications for 4M340-125: Bearing Seal Type: CONTACT; Lubrication Material: GREASE; Outer Ring Width: 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 1,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING. 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.