The Bearing,ball,annular, cataloged under National Stock Number 3110-01-271-4788, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-271-4788 |
| Primary Part Number | S1219M5LD |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Mpb Corp Div Timken Super Precision |
| Status | ACTIVE |
| Retainer Fabrication Method | MACHINED |
| Internal Clearance | 0.0005 INCHES MINIMUM RADIAL AND 0.0011 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Supplementary Features | TORQUE TUBE SERIES ANGULAR CONTACT NONSEPARABLE |
| Style Designator | LOADING GROOVE, NON-SEPARABLE |
| Material Document and Classification | AISI/SAE J405 UNS S44004 ASSN STD SINGLE MATERIAL RESPONSE BALL |
| Material Document and Classification | AISI/SAE J405 UNS S44004 ASSN STD SINGLE MATERIAL RESPONSE INNER RING |
| Material Document and Classification | AISI/SAE J405 UNS S44004 ASSN STD SINGLE MATERIAL RESPONSE OUTER RING |
| Material Document and Classification | PLENOLIC LAMINATE MFR REF SINGLE MATERIAL RESPONSE RETAINER |
| Overall Outside Diameter | 1.1873 INCHES MINIMUM AND 1.1875 INCHES MAXIMUM IN |
| Bore Shape | STRAIGHT |
| Load Direction | ANGULAR |
| Functional Description | U/O GYRO COMPASS,TRIPARTITE MINE HUNTER |
| Standard Tolerance Designation | ABEC NO. 5T |
| Bore Diameter | 0.7498 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Material | STEEL COMP 440C INNER RING |
| Material | STEEL COMP 440C OUTER RING |
| Material | PLASTIC PHENOLIC RETAINER |
| Material | STEEL COMP 440C BALL |
| 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 |
|---|---|
| S1219M5LD PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| S1219M5 | 3/1 Design control — primary reference Mpb Corp Div Timken Super Precision |
| S1219M5 | 5/9 Secondary reference Waage Mfg Co |
NSN 3110-01-271-4788 is a Bearing,ball,annular, manufactured by Mpb Corp Div Timken Super Precision, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-271-4788 has 1 manufacturer part number on file: S1219M5LD (Mpb Corp Div Timken Super Precision).
Key specifications for S1219M5LD: Retainer Fabrication Method: MACHINED; Internal Clearance: 0.0005 INCHES MINIMUM RADIAL AND 0.0011 INCHES MAXIMUM RADIAL IN; Surface Finish: GROUND; Supplementary Features: TORQUE TUBE SERIES ANGULAR CONTACT NONSEPARABLE. 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.