The Bearing,ball,duplex, cataloged under National Stock Number 3110-01-288-7875, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Mpb Corp Div Timken Super Precision. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3110-01-288-7875 |
| Primary Part Number | G303 |
| Item Name | Bearing,ball,duplex |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Bearing Preload Rating | 7.0 POUNDS MINIMUM AND 9.0 POUNDS MAXIMUM LBS |
| Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE BALL |
| Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OUTER RING |
| Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE INNER RING |
| Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE SPACER |
| Surface Finish | GROUND |
| Material Document and Classification | UNABLE TO DECODE |
| Overall Outside Diameter | 0.7500 INCHES NOMINAL IN |
| Contact Angle | 30.0 DEGREES NOMINAL |
| Surface Treatment | PASSIVATE OUTER RING |
| Surface Treatment | PASSIVATE INNER RING |
| Surface Treatment | PASSIVATE BALL |
| Surface Treatment | PASSIVATE SPACER |
| Standard Tolerance Designation | ABEC NO. 7T |
| Bore Diameter | 0.5000 INCHES NOMINAL IN |
| Material | STEEL COMP 440C INNER RING |
| Material | OIL LUBRICATION |
| Material | STEEL COMP 440C OUTER RING |
| Material | STEEL COMP 440C BALL |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE RETAINER |
| Material | STEEL COMP 440C SPACER |
| Lubrication Material Document and Classification | CODE 7001,717806000,CAGEC 04939 MFR REF SINGLE MATERIAL RESPONSE |
| 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 |
|---|---|
| G303 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| 717801756-001 | 7/2 Vendor item drawing reference Lockheed Martin Corporation |
NSN 3110-01-288-7875 is a Bearing,ball,duplex, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-288-7875 has 1 manufacturer part number on file: G303 (Mpb Corp Div Timken Super Precision).
Key specifications for G303: Bearing Preload Rating: 7.0 POUNDS MINIMUM AND 9.0 POUNDS MAXIMUM LBS; Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE BALL; Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OUTER RING; Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE INNER RING. 22 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.