The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-287-2971, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Lockheed Martin Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-287-2971 |
| Primary Part Number | 717801718-001 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Bearing Preload Rating | 1.75 POUNDS MINIMUM AND 2.25 POUNDS MAXIMUM LBS |
| Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Surface Finish | GROUND |
| Shield Quantity | 4 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE, TANDEM MOUNTING |
| Material Document and Classification | UNABLE TO DECODE |
| Overall Outside Diameter | 0.3750 INCHES NOMINAL IN |
| Load Direction | RADIAL |
| Surface Treatment | PASSIVATE OVERALL |
| Standard Tolerance Designation | ABEC NO. 5P |
| Bore Diameter | 0.1875 INCHES NOMINAL IN |
| Material | STEEL COMP 440C INNER RING |
| Material | STEEL COMP 305 RETAINER |
| Material | OIL LUBRICATION |
| Material | STEEL COMP 440C OUTER RING |
| Material | STEEL COMP 440C BALL |
| Material | STEEL COMP 302 OR STEEL COMP 301 SHIELD |
| Lubrication Material Document and Classification | BRAYCO 815Z,CAGEC 04939 MFR REF SINGLE MATERIAL RESPONSE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 717801718-001 PRIMARY | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| H561 | 5/9 Secondary reference Mpb Corp Div Timken Super Precision |
NSN 3110-01-287-2971 is a Bearing,ball,duplex, manufactured by Lockheed Martin Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-287-2971 has 1 manufacturer part number on file: 717801718-001 (Lockheed Martin Corporation).
Key specifications for 717801718-001: Retainer Fabrication Method: PRESSED; Bearing Preload Rating: 1.75 POUNDS MINIMUM AND 2.25 POUNDS MAXIMUM LBS; Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Surface Finish: GROUND. 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.
NSN 3110-01-287-2971 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.