The Cam Follower,needle Bearing, cataloged under National Stock Number 3110-01-238-0686, 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 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3110-01-238-0686 |
| Primary Part Number | MS21440-321 |
| Item Name | Cam Follower,needle Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Bearing Seal Type | LIPS TURNED OUTWARDLY |
| Lubrication Material | GREASE |
| Outer Ring Width | 1.2450 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN |
| Thread Length | 1.0000 INCHES NOMINAL IN |
| Style Designator | CAM FOLLOWER |
| Overall Outside Diameter | 1.9990 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.875 INCHES IN |
| Stud Length | 2.0000 INCHES NOMINAL IN |
| Seal Quantity | 2 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL OUTER RING |
| Material | STEEL STUD |
| Material | STEEL END PLATE |
| Material | STEEL ROLLER |
| Material | PLASTIC POLYAMIDE NYLON SEAL |
| Thread Series Designator | UNF |
| Stud Diameter | 0.8750 INCHES MINIMUM AND 0.8760 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 |
|---|---|
| MS21440-321 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS21440-321 | 5/9 Secondary reference U.S. Government activity |
| AS21440A | 5/1 Secondary reference Sae International Dba Sae International |
| CCF-2-S | 5/9 Secondary reference U.S. Government activity |
NSN 3110-01-238-0686 is a Cam Follower,needle Bearing, manufactured by Sae International Dba Sae International, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-238-0686 has 1 manufacturer part number on file: MS21440-321 (Sae International Dba Sae International).
Key specifications for MS21440-321: Bearing Seal Type: LIPS TURNED OUTWARDLY; Lubrication Material: GREASE; Outer Ring Width: 1.2450 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN; Thread Length: 1.0000 INCHES NOMINAL IN. 19 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.