The Cam Follower,needle Bearing, cataloged under National Stock Number 3110-01-273-1691, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Accurate Bushing Company, Inc.. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-273-1691 |
| Primary Part Number | HR-3-1/4-X-6 |
| Item Name | Cam Follower,needle Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Accurate Bushing Company, Inc. |
| Status | ACTIVE |
| Bearing Seal Type | CONTACT |
| Lubrication Material | GREASE |
| Outer Ring Width | 1.7450 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN |
| Thread Length | 1.2500 INCHES NOMINAL IN |
| Style Designator | CAM FOLLOWER |
| Overall Outside Diameter | 3.2490 INCHES MINIMUM AND 3.2500 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.500 INCHES IN |
| Stud Length | 2.5000 INCHES NOMINAL IN |
| Surface Treatment | OXIDE ALL EXTERNAL/EXPOSED METAL SURFACES |
| Seal Quantity | 2 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OUTER RING |
| Material | STEEL INNER RING |
| Material | RUBBER SYNTHETIC SEAL |
| Material | STEEL ROLLER |
| Thread Series Designator | UNF |
| Lubrication Material Document and Classification | MOBIL SPECIAL WITH MOS2,CAGEC 77988 MFR REF SINGLE MATERIAL RESPONSE |
| Stud Diameter | 1.5000 INCHES MINIMUM AND 1.6010 INCHES MAXIMUM 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 |
|---|---|
| HR-3-1/4-X-6 | Accurate Bushing Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| E-106696 PART 12 | 5/9 Secondary reference Control Flow, Inc. Dba Control Flow Inc |
| E-106696 PART 12 | 5/9 Secondary reference Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division |
| CFH-3 1/4S | 3/2 Design control — primary reference U.S. Government activity |
NSN 3110-01-273-1691 is a Cam Follower,needle Bearing, manufactured by Accurate Bushing Company, Inc., classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-273-1691 has 1 manufacturer part number on file: HR-3-1/4-X-6 (Accurate Bushing Company, Inc.).
Key specifications for HR-3-1/4-X-6: Bearing Seal Type: CONTACT; Lubrication Material: GREASE; Outer Ring Width: 1.7450 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN; Thread Length: 1.2500 INCHES NOMINAL IN. 20 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.